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From megaco-admin@ietf.org  Mon Feb  2 08:24:34 2004
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Message-ID: <008001c3e985$9114d690$403010ac@DALLAPTOP>
From: "Dal Chohan" <D.Chohan@ftel.co.uk>
To: <megaco@ietf.org>
Date: Mon, 2 Feb 2004 12:10:34 -0000
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Subject: [Megaco] Events Descriptor with KeepActive set and an  Emebdded Signals Descriptor
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H.248v2 clause 7.1.9 states that ; "A media gateway controller shall not =
send EventsDescriptors with an event both marked KeepActive and =
containing an embedded SignalsDescriptor"
I think that this is unnecessarily too restrictive and unduly reduces =
the flexibility of H.248. The judicious use of the KA flag within the =
Embedded Signal descriptor itself can keep the Signal currently being =
applied active.

The following scenario describes a practical situation where the above =
rule is violate. Take the case where "Automatic Metering" is applied to =
an analogue line and automatic meter pulses are being generated  by the =
MG. Now the MG is monitoring for "On-Hook" and the KA (KeepActive) flag =
is sent against the "On-Hook" event. Upon detection of  "On-Hook" the =
event is reported to the MGC by the MG and the automatic metering still =
continues.=20

Now the MGC sends a command requesting that the MG monitor for =
"Off-Hook" with the KA flag set, plus an Embedded signals/event =
descriptor indicating that "dial tone" should be played. In addition the =
KA flag is set for the "enable metering" signal to ensure that the =
automatic metering continues when the dial tone signal is applied , and =
the digit map descriptor is also enabled. Now this sequence clearly =
violates the rule stated above.

I would therefore recommend that the sentence above is deleted from the =
specification unless someone can think off a good reason for keeping it, =
because it is unnecessarily too restrictive and reduces the flexibility =
of the H.248 protocol.




Regards.


Dal Chohan

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<META content=3D"MSHTML 6.00.2800.1276" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2><FONT face=3D"Times New Roman" =
size=3D3>H.248v2 clause=20
7.1.9 states that ; </FONT><SPAN lang=3DEN-GB><FONT face=3D"Times New =
Roman"=20
size=3D3>"A media gateway controller shall not send EventsDescriptors =
with an=20
event both marked KeepActive and containing an embedded=20
SignalsDescriptor"</FONT></SPAN>
<P class=3DMsoNormal style=3D"MARGIN: 6pt 0cm 0pt"><SPAN =
lang=3DEN-GB><FONT=20
face=3D"Times New Roman" size=3D3>I think that this is unnecessarily too =
restrictive=20
and unduly reduces the flexibility of H.248. The judicious use of the KA =
flag=20
within the Embedded Signal descriptor itself can keep the Signal =
currently being=20
applied active.</FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 6pt 0cm 0pt"><SPAN =
lang=3DEN-GB><FONT=20
face=3D"Times New Roman" size=3D3>The following scenario describes a =
practical=20
situation where the above rule is violate. Take the case where =
"Automatic=20
Metering" is applied to an analogue line and automatic meter pulses are =
being=20
generated&nbsp; by the MG. Now the MG is monitoring for "On-Hook" and =
the KA=20
(KeepActive) flag is sent against the "On-Hook" event. Upon detection =
of&nbsp;=20
"On-Hook" the event is reported to the MGC by the MG and the automatic =
metering=20
still continues. </FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 6pt 0cm 0pt"><SPAN =
lang=3DEN-GB><FONT=20
face=3D"Times New Roman" size=3D3>Now the MGC sends a command requesting =
that the MG=20
monitor for "Off-Hook" with the KA flag set, plus an Embedded=20
signals/event&nbsp;descriptor indicating that "dial tone" should be =
played. In=20
addition the KA flag is set for the "enable metering" signal to ensure =
that the=20
automatic metering continues when the dial tone signal is applied&nbsp;, =
and the=20
digit map descriptor is also enabled. Now this sequence clearly violates =
the=20
rule stated above.</FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 6pt 0cm 0pt"><SPAN =
lang=3DEN-GB><FONT=20
face=3D"Times New Roman" size=3D3><STRONG>I would therefore recommend =
that the=20
sentence above is deleted from the specification unless someone can =
think off a=20
good reason for keeping it, because it is unnecessarily too restrictive =
and=20
reduces the flexibility of the H.248 =
protocol.</STRONG></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 6pt 0cm 0pt"><SPAN =
lang=3DEN-GB><FONT=20
face=3D"Times New Roman" size=3D3></FONT></SPAN>&nbsp;</P></FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV>Regards.</DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2><FONT size=3D3>Dal =
Chohan</FONT><BR></FONT></DIV></BODY></HTML>

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From megaco-admin@ietf.org  Mon Feb  2 13:38:53 2004
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From: Troy Cauble <troy@bell-labs.com>
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Subject: [Megaco] pulse dialing ?
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Are there packages for pulse dialing?

Generally, you could just use the DTMF detection packages.
A '2' is a '2', right?

But consider this US-centric example:  The *XX services,
such as *69, are supported via pulse dialing 1169.

Supporting this would require not only differentiating between
pulse dialed digits and touch-tone, but also different digit
maps for each.

Thoughts?

-troy

_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco


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Subject: [Megaco] pulse dialing ?
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Are there packages for pulse dialing?

Generally, you could just use the DTMF detection packages.
A '2' is a '2', right?

But consider this US-centric example:  The *XX services,
such as *69, are supported via pulse dialing 1169.

Supporting this would require not only differentiating between
pulse dialed digits and touch-tone, but also different digit
maps for each.

Thoughts?

-troy

_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco



From megaco-admin@ietf.org  Mon Feb  2 13:55:32 2004
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From: "Kevin Boyle" <kboyle@nortelnetworks.com>
To: Troy Cauble <troy@bell-labs.com>, MEGACO list <megaco@ietf.org>
Subject: RE: [Megaco] pulse dialing ?
Date: Mon, 2 Feb 2004 13:47:16 -0500 
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I don't see where it matters if you collect *XX or 11XX.  Let's take the
example below:  In North America, starting with 1 means a call out of your
LATA.  However, there are no NPAs or NXXs in NA that begin with 1.
Therefore, the switch will know that this is a feature code since it starts
with 11.  (Of course, this is why there are no NPAs or NXXs that begin with
1).

Kevin 

-----Original Message-----
From: Troy Cauble [mailto:troy@bell-labs.com] 
Sent: Monday, February 02, 2004 1:33 PM
To: MEGACO list
Subject: [Megaco] pulse dialing ?

Are there packages for pulse dialing?

Generally, you could just use the DTMF detection packages.
A '2' is a '2', right?

But consider this US-centric example:  The *XX services, such as *69, are
supported via pulse dialing 1169.

Supporting this would require not only differentiating between pulse dialed
digits and touch-tone, but also different digit maps for each.

Thoughts?

-troy

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https://www1.ietf.org/mailman/listinfo/megaco

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From: "Kevin Boyle" <kboyle@nortelnetworks.com>
To: Troy Cauble <troy@bell-labs.com>, MEGACO list <megaco@ietf.org>
Subject: RE: [Megaco] pulse dialing ?
Date: Mon, 2 Feb 2004 13:47:16 -0500 
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I don't see where it matters if you collect *XX or 11XX.  Let's take the
example below:  In North America, starting with 1 means a call out of your
LATA.  However, there are no NPAs or NXXs in NA that begin with 1.
Therefore, the switch will know that this is a feature code since it starts
with 11.  (Of course, this is why there are no NPAs or NXXs that begin with
1).

Kevin 

-----Original Message-----
From: Troy Cauble [mailto:troy@bell-labs.com] 
Sent: Monday, February 02, 2004 1:33 PM
To: MEGACO list
Subject: [Megaco] pulse dialing ?

Are there packages for pulse dialing?

Generally, you could just use the DTMF detection packages.
A '2' is a '2', right?

But consider this US-centric example:  The *XX services, such as *69, are
supported via pulse dialing 1169.

Supporting this would require not only differentiating between pulse dialed
digits and touch-tone, but also different digit maps for each.

Thoughts?

-troy

_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco

_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco



From megaco-admin@ietf.org  Tue Feb  3 04:59:31 2004
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From: Jean-Luc.Lecuyer@alcatel.fr
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Subject: [Megaco] Analog line state
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High all

Initial state : the MG is programmed to send a notify if a transition
on-hook / off-hook or vice versa happens.
Nevertheless the  MGC can miss a transition state from on-hook / off-hook
or vice versa (lost of H248 dialog with the MG)

I am looking for a way to know the state of a analog line (on-hook /
off-hook). I expected to use the AuditValue on the termination to know it
but unfortunately the AuditValue does not give this information.

In my understanding the only way to retrieve this information is to send a
modify command on the termination to reprogam the detection of event al/on
and al/of.

What do you think about that ?
Thank-you for your help.

Regards
Jean-Luc Lecuyer




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From megaco-admin@ietf.org  Tue Feb  3 07:37:31 2004
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Subject: RE : [Megaco] pulse dialing ?
Date: Tue, 3 Feb 2004 13:32:24 +0100
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Thread-Topic: [Megaco] pulse dialing ?
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From: "CHATRAS Bruno FTRD/DAC/ISS" <bruno.chatras@francetelecom.com>
To: "Kevin Boyle" <kboyle@nortelnetworks.com>,
        "Troy Cauble" <troy@bell-labs.com>, "MEGACO list" <megaco@ietf.org>
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I believe that using different set of packages would be more appropriate =
for DTMF detection and Pulse Dialing detection, as these two dialing =
procedures involve completly different types of resources in the MG.=20

Moreover, the current wording of the DTMF package (which extends the =
Tone Detection package) explicitly refers to the detection of audio =
tones (as opposed to pulses). Use of the DTMF package for supporting =
pulse dialing would, as a minimum, require changes to the package =
description.

Use of the same package for both DTMF and pulse dialing would also have =
a side effect on audit procedures: Auditing the list of supported =
packages would not enable the MGC to know whether the MG supports DTMF =
detection, pulse detection, or both.

Bruno


-----Message d'origine-----
De : megaco-admin@ietf.org [mailto:megaco-admin@ietf.org] De la part de =
Kevin Boyle
Envoy=E9 : lundi 2 f=E9vrier 2004 19:47
=C0 : Troy Cauble; MEGACO list
Objet : RE: [Megaco] pulse dialing ?


I don't see where it matters if you collect *XX or 11XX.  Let's take the =
example below:  In North America, starting with 1 means a call out of =
your LATA.  However, there are no NPAs or NXXs in NA that begin with 1. =
Therefore, the switch will know that this is a feature code since it =
starts with 11.  (Of course, this is why there are no NPAs or NXXs that =
begin with 1).

Kevin=20

-----Original Message-----
From: Troy Cauble [mailto:troy@bell-labs.com]=20
Sent: Monday, February 02, 2004 1:33 PM
To: MEGACO list
Subject: [Megaco] pulse dialing ?

Are there packages for pulse dialing?

Generally, you could just use the DTMF detection packages.
A '2' is a '2', right?

But consider this US-centric example:  The *XX services, such as *69, =
are supported via pulse dialing 1169.

Supporting this would require not only differentiating between pulse =
dialed digits and touch-tone, but also different digit maps for each.

Thoughts?

-troy

_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco

_______________________________________________
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https://www1.ietf.org/mailman/listinfo/megaco

_______________________________________________
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Subject: RE : [Megaco] pulse dialing ?
Date: Tue, 3 Feb 2004 13:32:24 +0100
Message-ID: <869954804BD53B41AF69F225F15FC331DB1F3E@ftrdmel1.rd.francetelecom.fr>
Thread-Topic: [Megaco] pulse dialing ?
Thread-Index: AcPpvj+cEf8s3+qpQ0aCpM0N3SyYuwAkNq3w
From: "CHATRAS Bruno FTRD/DAC/ISS" <bruno.chatras@francetelecom.com>
To: "Kevin Boyle" <kboyle@nortelnetworks.com>,
        "Troy Cauble" <troy@bell-labs.com>, "MEGACO list" <megaco@ietf.org>
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I believe that using different set of packages would be more appropriate =
for DTMF detection and Pulse Dialing detection, as these two dialing =
procedures involve completly different types of resources in the MG.=20

Moreover, the current wording of the DTMF package (which extends the =
Tone Detection package) explicitly refers to the detection of audio =
tones (as opposed to pulses). Use of the DTMF package for supporting =
pulse dialing would, as a minimum, require changes to the package =
description.

Use of the same package for both DTMF and pulse dialing would also have =
a side effect on audit procedures: Auditing the list of supported =
packages would not enable the MGC to know whether the MG supports DTMF =
detection, pulse detection, or both.

Bruno


-----Message d'origine-----
De : megaco-admin@ietf.org [mailto:megaco-admin@ietf.org] De la part de =
Kevin Boyle
Envoy=E9 : lundi 2 f=E9vrier 2004 19:47
=C0 : Troy Cauble; MEGACO list
Objet : RE: [Megaco] pulse dialing ?


I don't see where it matters if you collect *XX or 11XX.  Let's take the =
example below:  In North America, starting with 1 means a call out of =
your LATA.  However, there are no NPAs or NXXs in NA that begin with 1. =
Therefore, the switch will know that this is a feature code since it =
starts with 11.  (Of course, this is why there are no NPAs or NXXs that =
begin with 1).

Kevin=20

-----Original Message-----
From: Troy Cauble [mailto:troy@bell-labs.com]=20
Sent: Monday, February 02, 2004 1:33 PM
To: MEGACO list
Subject: [Megaco] pulse dialing ?

Are there packages for pulse dialing?

Generally, you could just use the DTMF detection packages.
A '2' is a '2', right?

But consider this US-centric example:  The *XX services, such as *69, =
are supported via pulse dialing 1169.

Supporting this would require not only differentiating between pulse =
dialed digits and touch-tone, but also different digit maps for each.

Thoughts?

-troy

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From: Reitter Johann <johann.reitter@siemens.com>
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Subject: [Megaco] Megaco/H.248 versus snmp for midcom
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Dear all,

may someone please explain to me why megaco/H.248 is "real-time capable"
whereas snmp is not?

Thanks in advance

Regards,

Hans

_______________________________________________
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Dear all,

may someone please explain to me why megaco/H.248 is "real-time capable"
whereas snmp is not?

Thanks in advance

Regards,

Hans

_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco



From megaco-admin@ietf.org  Tue Feb  3 12:16:31 2004
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From: "Kevin Boyle" <kboyle@nortelnetworks.com>
To: Reitter Johann <johann.reitter@siemens.com>,
        "'megaco@ietf.org'"
	 <megaco@ietf.org>
Subject: RE: [Megaco] Megaco/H.248 versus snmp for midcom
Date: Tue, 3 Feb 2004 12:12:51 -0500 
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SNMP and H.248 address two different problem spaces.  H.248 is designed for
real-time communications control.  SNMP is designed for remote management of
network equipment.  Generally speaking, management is not a real-time
function, so the things that must be taken into consideration for real-time
control were not built into SNMP.

Kevin  

-----Original Message-----
From: Reitter Johann [mailto:johann.reitter@siemens.com] 
Sent: Tuesday, February 03, 2004 9:52 AM
To: 'megaco@ietf.org'
Subject: [Megaco] Megaco/H.248 versus snmp for midcom

Dear all,

may someone please explain to me why megaco/H.248 is "real-time capable"
whereas snmp is not?

Thanks in advance

Regards,

Hans

_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco

_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco


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Subject: RE: [Megaco] Megaco/H.248 versus snmp for midcom
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SNMP and H.248 address two different problem spaces.  H.248 is designed for
real-time communications control.  SNMP is designed for remote management of
network equipment.  Generally speaking, management is not a real-time
function, so the things that must be taken into consideration for real-time
control were not built into SNMP.

Kevin  

-----Original Message-----
From: Reitter Johann [mailto:johann.reitter@siemens.com] 
Sent: Tuesday, February 03, 2004 9:52 AM
To: 'megaco@ietf.org'
Subject: [Megaco] Megaco/H.248 versus snmp for midcom

Dear all,

may someone please explain to me why megaco/H.248 is "real-time capable"
whereas snmp is not?

Thanks in advance

Regards,

Hans

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The description of the "Call Waiting" signal defined in H.248.23 =
specifies that call waiting patterns do not repeat - Is this correct?

I would have thought that for a Call Waiting service that it would would =
make perfect sense for the "call waiting" pattern to be repeatedly =
applied by the MG until it was told to stop the call waiting signal by =
the MGC (c.f. ringing) . It is the MGC that determines the interval =
within which the waiting call should be accepted and thus determines the =
overall duration of the call waiting pattern.



Dal Chohan

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<META content=3D"MSHTML 6.00.2800.1276" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>The description of the "Call Waiting" =
signal=20
defined in H.248.23 specifies that call waiting patterns do not repeat - =
Is this=20
correct?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>I would have thought that for a Call =
Waiting=20
service that it would would make perfect sense for the "call waiting" =
pattern to=20
be repeatedly applied by the MG until it was told to stop the call =
waiting=20
signal by the MGC (c.f. ringing) .&nbsp;It is the MGC =
that&nbsp;determines the=20
interval within which the waiting call should be accepted and thus =
determines=20
the overall duration of the&nbsp;call waiting pattern.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Dal =
Chohan<BR></FONT></DIV></BODY></HTML>

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The description of the "Call Waiting" signal defined in H.248.23 =
specifies that call waiting patterns do not repeat - Is this correct?

I would have thought that for a Call Waiting service that it would would =
make perfect sense for the "call waiting" pattern to be repeatedly =
applied by the MG until it was told to stop the call waiting signal by =
the MGC (c.f. ringing) . It is the MGC that determines the interval =
within which the waiting call should be accepted and thus determines the =
overall duration of the call waiting pattern.



Dal Chohan

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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charset=3Diso-8859-1">
<META content=3D"MSHTML 6.00.2800.1276" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>The description of the "Call Waiting" =
signal=20
defined in H.248.23 specifies that call waiting patterns do not repeat - =
Is this=20
correct?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>I would have thought that for a Call =
Waiting=20
service that it would would make perfect sense for the "call waiting" =
pattern to=20
be repeatedly applied by the MG until it was told to stop the call =
waiting=20
signal by the MGC (c.f. ringing) .&nbsp;It is the MGC =
that&nbsp;determines the=20
interval within which the waiting call should be accepted and thus =
determines=20
the overall duration of the&nbsp;call waiting pattern.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Dal =
Chohan<BR></FONT></DIV></BODY></HTML>

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From: Raphael Tryster <raphael@tdsoft.com>
To: "'Dal Chohan'" <D.Chohan@ftel.co.uk>, megaco@ietf.org
Subject: RE: [Megaco] H.248.23 Enhanced Alerting Package.
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Kevin Boyle answered this question recently:


Call wait patterns are generally replayed after a short amount of time (10
seconds in North America).  Note that this is not a repetition -- this is
actually a second distinct application of the signal.  There are several
feature scenarios where the second signal will not be applied -- if the
waiting party hangs up, or if the callee flashes, to name a couple.
 
As for the dt package, I believe the characterization of call wait tone as
timeout is erroneous, although previous attempts to fix it have been
rejected.  I wrote the alerting package to be local-variant unaware, leaving
it to the MG to be responsible for how the signals should be applied to its
terminations.  Note that most localities have more than one wait tone
pattern, to allow for assignable distinctive tones (similar to assigning
distinctive ringing patterns to different incoming callers).
 
I see no reason to use dt/cw if using alert/cw.  The alerting package
provides far more functionality than the dt package for both ringing and
call waiting.
 
Kevin


  _____  

	From: Raphael Tryster [mailto:raphael@tdsoft.com]
<mailto:[mailto:raphael@tdsoft.com]>  
	Sent: Thursday, January 08, 2004 5:39 AM
	To: Boyle, Kevin [NCRTP:3Z40:EXCH]; megaco@ietf.org
<mailto:megaco@ietf.org> 
	Subject: call waiting signal type
	
	

	In draft_boyle_megaco_alerting_03.txt, the alert/cw signal has type
brief, whereas the standard signal dt/cw apparently has type timeout.  Is
this a matter of national protocol?  The description of alert/cw says "Call
wait patterns do not repeat".  In Israel, a call waiting signal consists of
3 short tones, repeated once a few seconds later.

	If it is a matter of national protocol, does this mean that a
particular installation will use either alert/cw or dt/cw, but not both?

	Raphael Tryster 


	-----Original Message-----
	From:	Dal Chohan [SMTP:D.Chohan@ftel.co.uk]
	Sent:	Wednesday, 4 February 2004 18:12
	To:	megaco@ietf.org
	Subject:	[Megaco] H.248.23 Enhanced Alerting Package.

	 
	The description of the "Call Waiting" signal defined in H.248.23
specifies that call waiting patterns do not repeat - Is this correct?
	 
	I would have thought that for a Call Waiting service that it would
would make perfect sense for the "call waiting" pattern to be repeatedly
applied by the MG until it was told to stop the call waiting signal by the
MGC (c.f. ringing) . It is the MGC that determines the interval within which
the waiting call should be accepted and thus determines the overall duration
of the call waiting pattern.
	 
	 
	 
	Dal Chohan
	

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<BODY BGCOLOR=3D"#FFFFFF">

<P><FONT SIZE=3D2 FACE=3D"Arial">Kevin Boyle answered this question recen=
tly:</FONT>
</P>
<BR>

<P><FONT SIZE=3D2 FACE=3D"Arial">Call wait patterns are generally replaye=
d after a short amount of time (10 seconds in North America).=A0 Note tha=
t this is not a repetition -- this is actually a second distinct applicat=
ion of the signal.=A0 There are several feature scenarios where the secon=
d signal will not be applied -- if the waiting party hangs up, or if the =
callee flashes, to name a couple.</FONT></P>

<P><FONT FACE=3D"Arial">=A0</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">As for the dt package, I believe the ch=
aracterization of call wait tone as timeout is erroneous, although previo=
us attempts to fix it have been rejected.=A0 I wrote the alerting package=
 to be local-variant unaware, leaving it to the MG to be responsible for =
how the signals should be applied to its terminations.=A0 Note that most =
localities have more than one wait tone pattern, to allow for assignable =
distinctive tones (similar to assigning distinctive ringing patterns to d=
ifferent incoming callers).</FONT></P>

<P><FONT FACE=3D"Arial">=A0</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">I see no reason to use dt/cw if using a=
lert/cw.=A0 The alerting package provides far more functionality than the=
 dt package for both ringing and call waiting.</FONT></P>

<P><FONT FACE=3D"Arial">=A0</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">Kevin</FONT>
</P>
<BR>

<P><U><FONT FACE=3D"Courier New">=A0 _____ =A0<BR>
</FONT></U>
<UL>
<P><B><FONT SIZE=3D2 FACE=3D"Tahoma">From:</FONT></B><FONT SIZE=3D2 FACE=3D=
"Tahoma"> Raphael Tryster</FONT> <A HREF=3D"mailto:[mailto:raphael@tdsoft=
=2Ecom]"><U><FONT COLOR=3D"#0000FF" SIZE=3D2 FACE=3D"Arial">[mailto:rapha=
el@tdsoft.com]</FONT></U></A><FONT SIZE=3D2 FACE=3D"Tahoma"><BR>
</FONT><B></B><B><FONT SIZE=3D2 FACE=3D"Tahoma">Sent:</FONT></B><FONT SIZ=
E=3D2 FACE=3D"Tahoma"> Thursday, January 08, 2004 5:39 AM<BR>
</FONT><B></B><B><FONT SIZE=3D2 FACE=3D"Tahoma">To:</FONT></B><FONT SIZE=3D=
2 FACE=3D"Tahoma"> Boyle, Kevin [NCRTP:3Z40:EXCH];</FONT> <A HREF=3D"mail=
to:megaco@ietf.org"><U><FONT COLOR=3D"#0000FF" SIZE=3D2 FACE=3D"Arial">me=
gaco@ietf.org</FONT></U></A><BR>
<B></B><B><FONT SIZE=3D2 FACE=3D"Tahoma">Subject:</FONT></B><FONT SIZE=3D=
2 FACE=3D"Tahoma"> call waiting signal type<BR>
</FONT><BR>

</P>

<P><FONT SIZE=3D2 FACE=3D"Arial">In</FONT><FONT FACE=3D"Arial"></FONT> <F=
ONT SIZE=3D2 FACE=3D"Arial">draft_boyle_megaco_alerting_03.txt, the alert=
/cw signal has type brief, whereas the standard signal dt/cw apparently h=
as type timeout.=A0 Is this a matter of national protocol?=A0 The descrip=
tion of alert/cw says &quot;Call wait patterns do not repeat&quot;.=A0 In=
 Israel, a call waiting signal consists of 3 short tones, repeated once a=
 few seconds later.</FONT></P>

<P><FONT SIZE=3D2 FACE=3D"Arial">If it is a matter of national protocol, =
does this mean that a particular installation will use either alert/cw or=
 dt/cw, but not both?</FONT></P>

<P><FONT SIZE=3D2 FACE=3D"Tahoma">Raphael Tryster</FONT><FONT FACE=3D"Ari=
al"> </FONT>
</P>
<BR>

<P><A NAME=3D"_MailData"><FONT SIZE=3D2 FACE=3D"Arial">-----Original Mess=
age-----</FONT></A>
<BR><B><FONT SIZE=3D2 FACE=3D"Arial">From:&nbsp;&nbsp; Dal Chohan [SMTP:D=
=2EChohan@ftel.co.uk]</FONT></B>
<BR><B><FONT SIZE=3D2 FACE=3D"Arial">Sent:&nbsp;&nbsp;</FONT></B> <FONT S=
IZE=3D2 FACE=3D"Arial">Wednesday, 4 February 2004 18:12</FONT>
<BR><B><FONT SIZE=3D2 FACE=3D"Arial">To:&nbsp;&nbsp;&nbsp;&nbsp;</FONT></=
B> <FONT SIZE=3D2 FACE=3D"Arial">megaco@ietf.org</FONT>
<BR><B><FONT SIZE=3D2 FACE=3D"Arial">Subject:&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;</FONT></B> <FONT SIZE=3D2 FACE=3D"Arial">[Megaco] H.248.23=
 Enhanced Alerting Package.</FONT>
</P>

<P><FONT FACE=3D"Arial">=A0</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">The description of the &quot;Call Waiti=
ng&quot; signal defined in H.248.23 specifies that call waiting patterns =
do not repeat - Is this correct?</FONT></P>

<P><FONT FACE=3D"Arial">=A0</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">I would have thought that for a Call Wa=
iting service that it would would make perfect sense for the &quot;call w=
aiting&quot; pattern to be repeatedly applied by the MG until it was told=
 to stop the call waiting signal by the MGC (c.f. ringing) .=A0It is the =
MGC that=A0determines the interval within which the waiting call should b=
e accepted and thus determines the overall duration of the=A0call waiting=
 pattern.</FONT></P>

<P><FONT FACE=3D"Arial">=A0</FONT>
<BR><FONT FACE=3D"Arial">=A0</FONT>
<BR><FONT FACE=3D"Arial">=A0</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">Dal Chohan<BR>
</FONT>
</P>
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From: Raphael Tryster <raphael@tdsoft.com>
To: "'Dal Chohan'" <D.Chohan@ftel.co.uk>, megaco@ietf.org
Subject: RE: [Megaco] H.248.23 Enhanced Alerting Package.
Date: Wed, 4 Feb 2004 18:26:53 +0200 
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Kevin Boyle answered this question recently:


Call wait patterns are generally replayed after a short amount of time (10
seconds in North America).  Note that this is not a repetition -- this is
actually a second distinct application of the signal.  There are several
feature scenarios where the second signal will not be applied -- if the
waiting party hangs up, or if the callee flashes, to name a couple.
 
As for the dt package, I believe the characterization of call wait tone as
timeout is erroneous, although previous attempts to fix it have been
rejected.  I wrote the alerting package to be local-variant unaware, leaving
it to the MG to be responsible for how the signals should be applied to its
terminations.  Note that most localities have more than one wait tone
pattern, to allow for assignable distinctive tones (similar to assigning
distinctive ringing patterns to different incoming callers).
 
I see no reason to use dt/cw if using alert/cw.  The alerting package
provides far more functionality than the dt package for both ringing and
call waiting.
 
Kevin


  _____  

	From: Raphael Tryster [mailto:raphael@tdsoft.com]
<mailto:[mailto:raphael@tdsoft.com]>  
	Sent: Thursday, January 08, 2004 5:39 AM
	To: Boyle, Kevin [NCRTP:3Z40:EXCH]; megaco@ietf.org
<mailto:megaco@ietf.org> 
	Subject: call waiting signal type
	
	

	In draft_boyle_megaco_alerting_03.txt, the alert/cw signal has type
brief, whereas the standard signal dt/cw apparently has type timeout.  Is
this a matter of national protocol?  The description of alert/cw says "Call
wait patterns do not repeat".  In Israel, a call waiting signal consists of
3 short tones, repeated once a few seconds later.

	If it is a matter of national protocol, does this mean that a
particular installation will use either alert/cw or dt/cw, but not both?

	Raphael Tryster 


	-----Original Message-----
	From:	Dal Chohan [SMTP:D.Chohan@ftel.co.uk]
	Sent:	Wednesday, 4 February 2004 18:12
	To:	megaco@ietf.org
	Subject:	[Megaco] H.248.23 Enhanced Alerting Package.

	 
	The description of the "Call Waiting" signal defined in H.248.23
specifies that call waiting patterns do not repeat - Is this correct?
	 
	I would have thought that for a Call Waiting service that it would
would make perfect sense for the "call waiting" pattern to be repeatedly
applied by the MG until it was told to stop the call waiting signal by the
MGC (c.f. ringing) . It is the MGC that determines the interval within which
the waiting call should be accepted and thus determines the overall duration
of the call waiting pattern.
	 
	 
	 
	Dal Chohan
	

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<TITLE>RE: [Megaco] H.248.23 Enhanced Alerting Package.</TITLE>
</HEAD>
<BODY BGCOLOR=3D"#FFFFFF">

<P><FONT SIZE=3D2 FACE=3D"Arial">Kevin Boyle answered this question recen=
tly:</FONT>
</P>
<BR>

<P><FONT SIZE=3D2 FACE=3D"Arial">Call wait patterns are generally replaye=
d after a short amount of time (10 seconds in North America).=A0 Note tha=
t this is not a repetition -- this is actually a second distinct applicat=
ion of the signal.=A0 There are several feature scenarios where the secon=
d signal will not be applied -- if the waiting party hangs up, or if the =
callee flashes, to name a couple.</FONT></P>

<P><FONT FACE=3D"Arial">=A0</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">As for the dt package, I believe the ch=
aracterization of call wait tone as timeout is erroneous, although previo=
us attempts to fix it have been rejected.=A0 I wrote the alerting package=
 to be local-variant unaware, leaving it to the MG to be responsible for =
how the signals should be applied to its terminations.=A0 Note that most =
localities have more than one wait tone pattern, to allow for assignable =
distinctive tones (similar to assigning distinctive ringing patterns to d=
ifferent incoming callers).</FONT></P>

<P><FONT FACE=3D"Arial">=A0</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">I see no reason to use dt/cw if using a=
lert/cw.=A0 The alerting package provides far more functionality than the=
 dt package for both ringing and call waiting.</FONT></P>

<P><FONT FACE=3D"Arial">=A0</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">Kevin</FONT>
</P>
<BR>

<P><U><FONT FACE=3D"Courier New">=A0 _____ =A0<BR>
</FONT></U>
<UL>
<P><B><FONT SIZE=3D2 FACE=3D"Tahoma">From:</FONT></B><FONT SIZE=3D2 FACE=3D=
"Tahoma"> Raphael Tryster</FONT> <A HREF=3D"mailto:[mailto:raphael@tdsoft=
=2Ecom]"><U><FONT COLOR=3D"#0000FF" SIZE=3D2 FACE=3D"Arial">[mailto:rapha=
el@tdsoft.com]</FONT></U></A><FONT SIZE=3D2 FACE=3D"Tahoma"><BR>
</FONT><B></B><B><FONT SIZE=3D2 FACE=3D"Tahoma">Sent:</FONT></B><FONT SIZ=
E=3D2 FACE=3D"Tahoma"> Thursday, January 08, 2004 5:39 AM<BR>
</FONT><B></B><B><FONT SIZE=3D2 FACE=3D"Tahoma">To:</FONT></B><FONT SIZE=3D=
2 FACE=3D"Tahoma"> Boyle, Kevin [NCRTP:3Z40:EXCH];</FONT> <A HREF=3D"mail=
to:megaco@ietf.org"><U><FONT COLOR=3D"#0000FF" SIZE=3D2 FACE=3D"Arial">me=
gaco@ietf.org</FONT></U></A><BR>
<B></B><B><FONT SIZE=3D2 FACE=3D"Tahoma">Subject:</FONT></B><FONT SIZE=3D=
2 FACE=3D"Tahoma"> call waiting signal type<BR>
</FONT><BR>

</P>

<P><FONT SIZE=3D2 FACE=3D"Arial">In</FONT><FONT FACE=3D"Arial"></FONT> <F=
ONT SIZE=3D2 FACE=3D"Arial">draft_boyle_megaco_alerting_03.txt, the alert=
/cw signal has type brief, whereas the standard signal dt/cw apparently h=
as type timeout.=A0 Is this a matter of national protocol?=A0 The descrip=
tion of alert/cw says &quot;Call wait patterns do not repeat&quot;.=A0 In=
 Israel, a call waiting signal consists of 3 short tones, repeated once a=
 few seconds later.</FONT></P>

<P><FONT SIZE=3D2 FACE=3D"Arial">If it is a matter of national protocol, =
does this mean that a particular installation will use either alert/cw or=
 dt/cw, but not both?</FONT></P>

<P><FONT SIZE=3D2 FACE=3D"Tahoma">Raphael Tryster</FONT><FONT FACE=3D"Ari=
al"> </FONT>
</P>
<BR>

<P><A NAME=3D"_MailData"><FONT SIZE=3D2 FACE=3D"Arial">-----Original Mess=
age-----</FONT></A>
<BR><B><FONT SIZE=3D2 FACE=3D"Arial">From:&nbsp;&nbsp; Dal Chohan [SMTP:D=
=2EChohan@ftel.co.uk]</FONT></B>
<BR><B><FONT SIZE=3D2 FACE=3D"Arial">Sent:&nbsp;&nbsp;</FONT></B> <FONT S=
IZE=3D2 FACE=3D"Arial">Wednesday, 4 February 2004 18:12</FONT>
<BR><B><FONT SIZE=3D2 FACE=3D"Arial">To:&nbsp;&nbsp;&nbsp;&nbsp;</FONT></=
B> <FONT SIZE=3D2 FACE=3D"Arial">megaco@ietf.org</FONT>
<BR><B><FONT SIZE=3D2 FACE=3D"Arial">Subject:&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;</FONT></B> <FONT SIZE=3D2 FACE=3D"Arial">[Megaco] H.248.23=
 Enhanced Alerting Package.</FONT>
</P>

<P><FONT FACE=3D"Arial">=A0</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">The description of the &quot;Call Waiti=
ng&quot; signal defined in H.248.23 specifies that call waiting patterns =
do not repeat - Is this correct?</FONT></P>

<P><FONT FACE=3D"Arial">=A0</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">I would have thought that for a Call Wa=
iting service that it would would make perfect sense for the &quot;call w=
aiting&quot; pattern to be repeatedly applied by the MG until it was told=
 to stop the call waiting signal by the MGC (c.f. ringing) .=A0It is the =
MGC that=A0determines the interval within which the waiting call should b=
e accepted and thus determines the overall duration of the=A0call waiting=
 pattern.</FONT></P>

<P><FONT FACE=3D"Arial">=A0</FONT>
<BR><FONT FACE=3D"Arial">=A0</FONT>
<BR><FONT FACE=3D"Arial">=A0</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">Dal Chohan<BR>
</FONT>
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From: "Dal Chohan" <D.Chohan@ftel.co.uk>
To: "Raphael Tryster" <raphael@tdsoft.com>, <megaco@ietf.org>
References: <9A64A99CD3F2BD4582BE4FB63FC1F3810165F9@MAILSERVER>
Subject: Re: [Megaco] H.248.23 Enhanced Alerting Package.
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RE: [Megaco] H.248.23 Enhanced Alerting Package.Raphael=20

Thanks for the response -  but I don't see why the Call Waiting can't be =
repeatedly applied just like ringing. If the Callee flashes, then the =
detection of the event will stop the signal as per standard H.248 =
behaviour and if the waiting party hangs up, then the MGC will instruct =
the MG to stop applying the signal via a new signal descriptor.

Dal Chohan.
  ----- Original Message -----=20
  From: Raphael Tryster=20
  To: 'Dal Chohan' ; megaco@ietf.org=20
  Sent: Wednesday, February 04, 2004 4:26 PM
  Subject: RE: [Megaco] H.248.23 Enhanced Alerting Package.


  Kevin Boyle answered this question recently:=20



  Call wait patterns are generally replayed after a short amount of time =
(10 seconds in North America).  Note that this is not a repetition -- =
this is actually a second distinct application of the signal.  There are =
several feature scenarios where the second signal will not be applied -- =
if the waiting party hangs up, or if the callee flashes, to name a =
couple.

  =20
  As for the dt package, I believe the characterization of call wait =
tone as timeout is erroneous, although previous attempts to fix it have =
been rejected.  I wrote the alerting package to be local-variant =
unaware, leaving it to the MG to be responsible for how the signals =
should be applied to its terminations.  Note that most localities have =
more than one wait tone pattern, to allow for assignable distinctive =
tones (similar to assigning distinctive ringing patterns to different =
incoming callers).

  =20
  I see no reason to use dt/cw if using alert/cw.  The alerting package =
provides far more functionality than the dt package for both ringing and =
call waiting.

  =20
  Kevin=20



    _____ =20


    From: Raphael Tryster [mailto:raphael@tdsoft.com]
    Sent: Thursday, January 08, 2004 5:39 AM
    To: Boyle, Kevin [NCRTP:3Z40:EXCH]; megaco@ietf.org
    Subject: call waiting signal type



    In draft_boyle_megaco_alerting_03.txt, the alert/cw signal has type =
brief, whereas the standard signal dt/cw apparently has type timeout.  =
Is this a matter of national protocol?  The description of alert/cw says =
"Call wait patterns do not repeat".  In Israel, a call waiting signal =
consists of 3 short tones, repeated once a few seconds later.

    If it is a matter of national protocol, does this mean that a =
particular installation will use either alert/cw or dt/cw, but not both?

    Raphael Tryster=20



    -----Original Message-----=20
    From:   Dal Chohan [SMTP:D.Chohan@ftel.co.uk]=20
    Sent:   Wednesday, 4 February 2004 18:12=20
    To:     megaco@ietf.org=20
    Subject:        [Megaco] H.248.23 Enhanced Alerting Package.=20

    =20
    The description of the "Call Waiting" signal defined in H.248.23 =
specifies that call waiting patterns do not repeat - Is this correct?

    =20
    I would have thought that for a Call Waiting service that it would =
would make perfect sense for the "call waiting" pattern to be repeatedly =
applied by the MG until it was told to stop the call waiting signal by =
the MGC (c.f. ringing) . It is the MGC that determines the interval =
within which the waiting call should be accepted and thus determines the =
overall duration of the call waiting pattern.

    =20
     =20
     =20
    Dal Chohan


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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD><TITLE>RE: [Megaco] H.248.23 Enhanced Alerting =
Package.</TITLE>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<META content=3D"MSHTML 6.00.2800.1276" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2><FONT face=3DTahoma>Raphael =
</FONT></FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Thanks for the response =
-&nbsp;</FONT><FONT=20
face=3DArial size=3D2>&nbsp;but I don't see why the Call Waiting can't =
be repeatedly=20
<FONT face=3DTahoma>applied </FONT>just like ringing. If the Callee =
flashes, then=20
the detection of the event will stop the signal as per standard H.248 =
behaviour=20
and if the waiting party hangs up, then the MGC will instruct the MG to =
stop=20
applying the signal via a new signal descriptor.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Dal Chohan.</FONT></DIV>
<BLOCKQUOTE=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV=20
  style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
  <A title=3Draphael@tdsoft.com =
href=3D"mailto:raphael@tdsoft.com">Raphael=20
  Tryster</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3DD.Chohan@ftel.co.uk=20
  href=3D"mailto:D.Chohan@ftel.co.uk">'Dal Chohan'</A> ; <A =
title=3Dmegaco@ietf.org=20
  href=3D"mailto:megaco@ietf.org">megaco@ietf.org</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Wednesday, February 04, =
2004 4:26=20
  PM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> RE: [Megaco] H.248.23 =
Enhanced=20
  Alerting Package.</DIV>
  <DIV><BR></DIV>
  <P><FONT face=3DArial size=3D2>Kevin Boyle answered this question =
recently:</FONT>=20
  </P><BR>
  <P><FONT face=3DArial size=3D2>Call wait patterns are generally =
replayed after a=20
  short amount of time (10 seconds in North America).&nbsp; Note that =
this is=20
  not a repetition -- this is actually a second distinct application of =
the=20
  signal.&nbsp; There are several feature scenarios where the second =
signal will=20
  not be applied -- if the waiting party hangs up, or if the callee =
flashes, to=20
  name a couple.</FONT></P>
  <P><FONT face=3DArial></FONT> <BR><FONT face=3DArial size=3D2>As for =
the dt package,=20
  I believe the characterization of call wait tone as timeout is =
erroneous,=20
  although previous attempts to fix it have been rejected.&nbsp; I wrote =
the=20
  alerting package to be local-variant unaware, leaving it to the MG to =
be=20
  responsible for how the signals should be applied to its =
terminations.&nbsp;=20
  Note that most localities have more than one wait tone pattern, to =
allow for=20
  assignable distinctive tones (similar to assigning distinctive ringing =

  patterns to different incoming callers).</FONT></P>
  <P><FONT face=3DArial></FONT> <BR><FONT face=3DArial size=3D2>I see no =
reason to use=20
  dt/cw if using alert/cw.&nbsp; The alerting package provides far more=20
  functionality than the dt package for both ringing and call=20
waiting.</FONT></P>
  <P><FONT face=3DArial></FONT> <BR><FONT face=3DArial =
size=3D2>Kevin</FONT> </P><BR>
  <P><U><FONT face=3D"Courier New">&nbsp; _____ &nbsp;<BR></FONT></U>
  <UL>
    <P><B><FONT face=3DTahoma size=3D2>From:</FONT></B><FONT =
face=3DTahoma size=3D2>=20
    Raphael Tryster</FONT> <A =
href=3D"mailto:[mailto:raphael@tdsoft.com]"><U><FONT=20
    face=3DArial color=3D#0000ff=20
    size=3D2>[mailto:raphael@tdsoft.com]</FONT></U></A><FONT =
face=3DTahoma=20
    size=3D2><BR></FONT><B></B><B><FONT face=3DTahoma =
size=3D2>Sent:</FONT></B><FONT=20
    face=3DTahoma size=3D2> Thursday, January 08, 2004 5:39=20
    AM<BR></FONT><B></B><B><FONT face=3DTahoma =
size=3D2>To:</FONT></B><FONT=20
    face=3DTahoma size=3D2> Boyle, Kevin [NCRTP:3Z40:EXCH];</FONT> <A=20
    href=3D"mailto:megaco@ietf.org"><U><FONT face=3DArial =
color=3D#0000ff=20
    size=3D2>megaco@ietf.org</FONT></U></A><BR><B></B><B><FONT =
face=3DTahoma=20
    size=3D2>Subject:</FONT></B><FONT face=3DTahoma size=3D2> call =
waiting signal=20
    type<BR></FONT><BR></P>
    <P><FONT face=3DArial size=3D2>In</FONT><FONT face=3DArial></FONT> =
<FONT=20
    face=3DArial size=3D2>draft_boyle_megaco_alerting_03.txt, the =
alert/cw signal=20
    has type brief, whereas the standard signal dt/cw apparently has =
type=20
    timeout.&nbsp; Is this a matter of national protocol?&nbsp; The =
description=20
    of alert/cw says "Call wait patterns do not repeat".&nbsp; In =
Israel, a call=20
    waiting signal consists of 3 short tones, repeated once a few =
seconds=20
    later.</FONT></P>
    <P><FONT face=3DArial size=3D2>If it is a matter of national =
protocol, does this=20
    mean that a particular installation will use either alert/cw or =
dt/cw, but=20
    not both?</FONT></P>
    <P><FONT face=3DTahoma size=3D2>Raphael Tryster</FONT><FONT =
face=3DArial>=20
    </FONT></P><BR>
    <P><A name=3D_MailData><FONT face=3DArial size=3D2>-----Original=20
    Message-----</FONT></A> <BR><B><FONT face=3DArial =
size=3D2>From:&nbsp;&nbsp; Dal=20
    Chohan [SMTP:D.Chohan@ftel.co.uk]</FONT></B> <BR><B><FONT =
face=3DArial=20
    size=3D2>Sent:&nbsp;&nbsp;</FONT></B> <FONT face=3DArial =
size=3D2>Wednesday, 4=20
    February 2004 18:12</FONT> <BR><B><FONT face=3DArial=20
    size=3D2>To:&nbsp;&nbsp;&nbsp;&nbsp;</FONT></B> <FONT face=3DArial=20
    size=3D2>megaco@ietf.org</FONT> <BR><B><FONT face=3DArial=20
    =
size=3D2>Subject:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></B> =
<FONT=20
    face=3DArial size=3D2>[Megaco] H.248.23 Enhanced Alerting =
Package.</FONT> </P>
    <P><FONT face=3DArial></FONT> <BR><FONT face=3DArial size=3D2>The =
description of=20
    the "Call Waiting" signal defined in H.248.23 specifies that call =
waiting=20
    patterns do not repeat - Is this correct?</FONT></P>
    <P><FONT face=3DArial></FONT> <BR><FONT face=3DArial size=3D2>I =
would have thought=20
    that for a Call Waiting service that it would would make perfect =
sense for=20
    the "call waiting" pattern to be repeatedly applied by the MG until =
it was=20
    told to stop the call waiting signal by the MGC (c.f. ringing) =
.&nbsp;It is=20
    the MGC that&nbsp;determines the interval within which the waiting =
call=20
    should be accepted and thus determines the overall duration of =
the&nbsp;call=20
    waiting pattern.</FONT></P>
    <P><FONT face=3DArial></FONT> <BR><FONT face=3DArial>&nbsp;</FONT> =
<BR><FONT=20
    face=3DArial>&nbsp;</FONT> <BR><FONT face=3DArial size=3D2>Dal=20
    Chohan<BR></FONT></P></UL></BLOCKQUOTE></BODY></HTML>

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From: "Dal Chohan" <D.Chohan@ftel.co.uk>
To: "Raphael Tryster" <raphael@tdsoft.com>, <megaco@ietf.org>
References: <9A64A99CD3F2BD4582BE4FB63FC1F3810165F9@MAILSERVER>
Subject: Re: [Megaco] H.248.23 Enhanced Alerting Package.
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RE: [Megaco] H.248.23 Enhanced Alerting Package.Raphael=20

Thanks for the response -  but I don't see why the Call Waiting can't be =
repeatedly applied just like ringing. If the Callee flashes, then the =
detection of the event will stop the signal as per standard H.248 =
behaviour and if the waiting party hangs up, then the MGC will instruct =
the MG to stop applying the signal via a new signal descriptor.

Dal Chohan.
  ----- Original Message -----=20
  From: Raphael Tryster=20
  To: 'Dal Chohan' ; megaco@ietf.org=20
  Sent: Wednesday, February 04, 2004 4:26 PM
  Subject: RE: [Megaco] H.248.23 Enhanced Alerting Package.


  Kevin Boyle answered this question recently:=20



  Call wait patterns are generally replayed after a short amount of time =
(10 seconds in North America).  Note that this is not a repetition -- =
this is actually a second distinct application of the signal.  There are =
several feature scenarios where the second signal will not be applied -- =
if the waiting party hangs up, or if the callee flashes, to name a =
couple.

  =20
  As for the dt package, I believe the characterization of call wait =
tone as timeout is erroneous, although previous attempts to fix it have =
been rejected.  I wrote the alerting package to be local-variant =
unaware, leaving it to the MG to be responsible for how the signals =
should be applied to its terminations.  Note that most localities have =
more than one wait tone pattern, to allow for assignable distinctive =
tones (similar to assigning distinctive ringing patterns to different =
incoming callers).

  =20
  I see no reason to use dt/cw if using alert/cw.  The alerting package =
provides far more functionality than the dt package for both ringing and =
call waiting.

  =20
  Kevin=20



    _____ =20


    From: Raphael Tryster [mailto:raphael@tdsoft.com]
    Sent: Thursday, January 08, 2004 5:39 AM
    To: Boyle, Kevin [NCRTP:3Z40:EXCH]; megaco@ietf.org
    Subject: call waiting signal type



    In draft_boyle_megaco_alerting_03.txt, the alert/cw signal has type =
brief, whereas the standard signal dt/cw apparently has type timeout.  =
Is this a matter of national protocol?  The description of alert/cw says =
"Call wait patterns do not repeat".  In Israel, a call waiting signal =
consists of 3 short tones, repeated once a few seconds later.

    If it is a matter of national protocol, does this mean that a =
particular installation will use either alert/cw or dt/cw, but not both?

    Raphael Tryster=20



    -----Original Message-----=20
    From:   Dal Chohan [SMTP:D.Chohan@ftel.co.uk]=20
    Sent:   Wednesday, 4 February 2004 18:12=20
    To:     megaco@ietf.org=20
    Subject:        [Megaco] H.248.23 Enhanced Alerting Package.=20

    =20
    The description of the "Call Waiting" signal defined in H.248.23 =
specifies that call waiting patterns do not repeat - Is this correct?

    =20
    I would have thought that for a Call Waiting service that it would =
would make perfect sense for the "call waiting" pattern to be repeatedly =
applied by the MG until it was told to stop the call waiting signal by =
the MGC (c.f. ringing) . It is the MGC that determines the interval =
within which the waiting call should be accepted and thus determines the =
overall duration of the call waiting pattern.

    =20
     =20
     =20
    Dal Chohan


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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD><TITLE>RE: [Megaco] H.248.23 Enhanced Alerting =
Package.</TITLE>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<META content=3D"MSHTML 6.00.2800.1276" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2><FONT face=3DTahoma>Raphael =
</FONT></FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Thanks for the response =
-&nbsp;</FONT><FONT=20
face=3DArial size=3D2>&nbsp;but I don't see why the Call Waiting can't =
be repeatedly=20
<FONT face=3DTahoma>applied </FONT>just like ringing. If the Callee =
flashes, then=20
the detection of the event will stop the signal as per standard H.248 =
behaviour=20
and if the waiting party hangs up, then the MGC will instruct the MG to =
stop=20
applying the signal via a new signal descriptor.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Dal Chohan.</FONT></DIV>
<BLOCKQUOTE=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV=20
  style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
  <A title=3Draphael@tdsoft.com =
href=3D"mailto:raphael@tdsoft.com">Raphael=20
  Tryster</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3DD.Chohan@ftel.co.uk=20
  href=3D"mailto:D.Chohan@ftel.co.uk">'Dal Chohan'</A> ; <A =
title=3Dmegaco@ietf.org=20
  href=3D"mailto:megaco@ietf.org">megaco@ietf.org</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Wednesday, February 04, =
2004 4:26=20
  PM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> RE: [Megaco] H.248.23 =
Enhanced=20
  Alerting Package.</DIV>
  <DIV><BR></DIV>
  <P><FONT face=3DArial size=3D2>Kevin Boyle answered this question =
recently:</FONT>=20
  </P><BR>
  <P><FONT face=3DArial size=3D2>Call wait patterns are generally =
replayed after a=20
  short amount of time (10 seconds in North America).&nbsp; Note that =
this is=20
  not a repetition -- this is actually a second distinct application of =
the=20
  signal.&nbsp; There are several feature scenarios where the second =
signal will=20
  not be applied -- if the waiting party hangs up, or if the callee =
flashes, to=20
  name a couple.</FONT></P>
  <P><FONT face=3DArial></FONT> <BR><FONT face=3DArial size=3D2>As for =
the dt package,=20
  I believe the characterization of call wait tone as timeout is =
erroneous,=20
  although previous attempts to fix it have been rejected.&nbsp; I wrote =
the=20
  alerting package to be local-variant unaware, leaving it to the MG to =
be=20
  responsible for how the signals should be applied to its =
terminations.&nbsp;=20
  Note that most localities have more than one wait tone pattern, to =
allow for=20
  assignable distinctive tones (similar to assigning distinctive ringing =

  patterns to different incoming callers).</FONT></P>
  <P><FONT face=3DArial></FONT> <BR><FONT face=3DArial size=3D2>I see no =
reason to use=20
  dt/cw if using alert/cw.&nbsp; The alerting package provides far more=20
  functionality than the dt package for both ringing and call=20
waiting.</FONT></P>
  <P><FONT face=3DArial></FONT> <BR><FONT face=3DArial =
size=3D2>Kevin</FONT> </P><BR>
  <P><U><FONT face=3D"Courier New">&nbsp; _____ &nbsp;<BR></FONT></U>
  <UL>
    <P><B><FONT face=3DTahoma size=3D2>From:</FONT></B><FONT =
face=3DTahoma size=3D2>=20
    Raphael Tryster</FONT> <A =
href=3D"mailto:[mailto:raphael@tdsoft.com]"><U><FONT=20
    face=3DArial color=3D#0000ff=20
    size=3D2>[mailto:raphael@tdsoft.com]</FONT></U></A><FONT =
face=3DTahoma=20
    size=3D2><BR></FONT><B></B><B><FONT face=3DTahoma =
size=3D2>Sent:</FONT></B><FONT=20
    face=3DTahoma size=3D2> Thursday, January 08, 2004 5:39=20
    AM<BR></FONT><B></B><B><FONT face=3DTahoma =
size=3D2>To:</FONT></B><FONT=20
    face=3DTahoma size=3D2> Boyle, Kevin [NCRTP:3Z40:EXCH];</FONT> <A=20
    href=3D"mailto:megaco@ietf.org"><U><FONT face=3DArial =
color=3D#0000ff=20
    size=3D2>megaco@ietf.org</FONT></U></A><BR><B></B><B><FONT =
face=3DTahoma=20
    size=3D2>Subject:</FONT></B><FONT face=3DTahoma size=3D2> call =
waiting signal=20
    type<BR></FONT><BR></P>
    <P><FONT face=3DArial size=3D2>In</FONT><FONT face=3DArial></FONT> =
<FONT=20
    face=3DArial size=3D2>draft_boyle_megaco_alerting_03.txt, the =
alert/cw signal=20
    has type brief, whereas the standard signal dt/cw apparently has =
type=20
    timeout.&nbsp; Is this a matter of national protocol?&nbsp; The =
description=20
    of alert/cw says "Call wait patterns do not repeat".&nbsp; In =
Israel, a call=20
    waiting signal consists of 3 short tones, repeated once a few =
seconds=20
    later.</FONT></P>
    <P><FONT face=3DArial size=3D2>If it is a matter of national =
protocol, does this=20
    mean that a particular installation will use either alert/cw or =
dt/cw, but=20
    not both?</FONT></P>
    <P><FONT face=3DTahoma size=3D2>Raphael Tryster</FONT><FONT =
face=3DArial>=20
    </FONT></P><BR>
    <P><A name=3D_MailData><FONT face=3DArial size=3D2>-----Original=20
    Message-----</FONT></A> <BR><B><FONT face=3DArial =
size=3D2>From:&nbsp;&nbsp; Dal=20
    Chohan [SMTP:D.Chohan@ftel.co.uk]</FONT></B> <BR><B><FONT =
face=3DArial=20
    size=3D2>Sent:&nbsp;&nbsp;</FONT></B> <FONT face=3DArial =
size=3D2>Wednesday, 4=20
    February 2004 18:12</FONT> <BR><B><FONT face=3DArial=20
    size=3D2>To:&nbsp;&nbsp;&nbsp;&nbsp;</FONT></B> <FONT face=3DArial=20
    size=3D2>megaco@ietf.org</FONT> <BR><B><FONT face=3DArial=20
    =
size=3D2>Subject:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></B> =
<FONT=20
    face=3DArial size=3D2>[Megaco] H.248.23 Enhanced Alerting =
Package.</FONT> </P>
    <P><FONT face=3DArial></FONT> <BR><FONT face=3DArial size=3D2>The =
description of=20
    the "Call Waiting" signal defined in H.248.23 specifies that call =
waiting=20
    patterns do not repeat - Is this correct?</FONT></P>
    <P><FONT face=3DArial></FONT> <BR><FONT face=3DArial size=3D2>I =
would have thought=20
    that for a Call Waiting service that it would would make perfect =
sense for=20
    the "call waiting" pattern to be repeatedly applied by the MG until =
it was=20
    told to stop the call waiting signal by the MGC (c.f. ringing) =
.&nbsp;It is=20
    the MGC that&nbsp;determines the interval within which the waiting =
call=20
    should be accepted and thus determines the overall duration of =
the&nbsp;call=20
    waiting pattern.</FONT></P>
    <P><FONT face=3DArial></FONT> <BR><FONT face=3DArial>&nbsp;</FONT> =
<BR><FONT=20
    face=3DArial>&nbsp;</FONT> <BR><FONT face=3DArial size=3D2>Dal=20
    Chohan<BR></FONT></P></UL></BLOCKQUOTE></BODY></HTML>

------=_NextPart_000_0027_01C3EBC8.F29F7970--


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From megaco-admin@ietf.org  Thu Feb  5 07:30:36 2004
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From: "Kevin Boyle" <kboyle@nortelnetworks.com>
To: Dal Chohan <D.Chohan@ftel.co.uk>, Raphael Tryster <raphael@tdsoft.com>,
        megaco@ietf.org
Subject: RE: [Megaco] H.248.23 Enhanced Alerting Package.
Date: Thu, 5 Feb 2004 07:27:37 -0500 
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So, you would rather need two messages to play the tone once and one message
to play the tone twice?  That is incredibly non-intuitive.
 
Call wait generally has a very long interval between occurrences, and is
generally limited to two occurrences.  Ringing, on the other hand, does not
have a long interval (as compared to the length of the audible signal) and
is always applied indefinitely.  Further, the two examples I gave are just
that -- examples.  If you read the call waiting specifications, certain
feature interactions require only a single application of the call wait tone
as well.  These all lead to the conclusion that I stated earlier: Call wait
is a discrete signal applied multiple times.
 
Kevin


  _____  

From: Dal Chohan [mailto:D.Chohan@ftel.co.uk] 
Sent: Thursday, February 05, 2004 4:18 AM
To: Raphael Tryster; megaco@ietf.org
Subject: Re: [Megaco] H.248.23 Enhanced Alerting Package.


Raphael 
 
Thanks for the response -  but I don't see why the Call Waiting can't be
repeatedly applied just like ringing. If the Callee flashes, then the
detection of the event will stop the signal as per standard H.248 behaviour
and if the waiting party hangs up, then the MGC will instruct the MG to stop
applying the signal via a new signal descriptor.
 
Dal Chohan.

----- Original Message ----- 
From: Raphael  <mailto:raphael@tdsoft.com> Tryster 
To: 'Dal Chohan' <mailto:D.Chohan@ftel.co.uk>  ; megaco@ietf.org
<mailto:megaco@ietf.org>  
Sent: Wednesday, February 04, 2004 4:26 PM
Subject: RE: [Megaco] H.248.23 Enhanced Alerting Package.


Kevin Boyle answered this question recently: 


Call wait patterns are generally replayed after a short amount of time (10
seconds in North America).  Note that this is not a repetition -- this is
actually a second distinct application of the signal.  There are several
feature scenarios where the second signal will not be applied -- if the
waiting party hangs up, or if the callee flashes, to name a couple.


As for the dt package, I believe the characterization of call wait tone as
timeout is erroneous, although previous attempts to fix it have been
rejected.  I wrote the alerting package to be local-variant unaware, leaving
it to the MG to be responsible for how the signals should be applied to its
terminations.  Note that most localities have more than one wait tone
pattern, to allow for assignable distinctive tones (similar to assigning
distinctive ringing patterns to different incoming callers).


I see no reason to use dt/cw if using alert/cw.  The alerting package
provides far more functionality than the dt package for both ringing and
call waiting.


Kevin 


  _____  



	From: Raphael Tryster  <mailto:[mailto:raphael@tdsoft.com]>
[mailto:raphael@tdsoft.com]
Sent: Thursday, January 08, 2004 5:39 AM
To: Boyle, Kevin [NCRTP:3Z40:EXCH];  <mailto:megaco@ietf.org>
megaco@ietf.org
Subject: call waiting signal type



	In draft_boyle_megaco_alerting_03.txt, the alert/cw signal has type
brief, whereas the standard signal dt/cw apparently has type timeout.  Is
this a matter of national protocol?  The description of alert/cw says "Call
wait patterns do not repeat".  In Israel, a call waiting signal consists of
3 short tones, repeated once a few seconds later.

	If it is a matter of national protocol, does this mean that a
particular installation will use either alert/cw or dt/cw, but not both?

	Raphael Tryster 


	BM__MailData-----Original Message----- 
From:   Dal Chohan [SMTP:D.Chohan@ftel.co.uk] 
Sent:   Wednesday, 4 February 2004 18:12 
To:     megaco@ietf.org 
Subject:        [Megaco] H.248.23 Enhanced Alerting Package. 

	
The description of the "Call Waiting" signal defined in H.248.23 specifies
that call waiting patterns do not repeat - Is this correct?

	
I would have thought that for a Call Waiting service that it would would
make perfect sense for the "call waiting" pattern to be repeatedly applied
by the MG until it was told to stop the call waiting signal by the MGC (c.f.
ringing) . It is the MGC that determines the interval within which the
waiting call should be accepted and thus determines the overall duration of
the call waiting pattern.

	
  
  
Dal Chohan



_______________________________________________
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Megaco@ietf.org
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From: "Kevin Boyle" <kboyle@nortelnetworks.com>
To: Dal Chohan <D.Chohan@ftel.co.uk>, Raphael Tryster <raphael@tdsoft.com>,
        megaco@ietf.org
Subject: RE: [Megaco] H.248.23 Enhanced Alerting Package.
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So, you would rather need two messages to play the tone once and one message
to play the tone twice?  That is incredibly non-intuitive.
 
Call wait generally has a very long interval between occurrences, and is
generally limited to two occurrences.  Ringing, on the other hand, does not
have a long interval (as compared to the length of the audible signal) and
is always applied indefinitely.  Further, the two examples I gave are just
that -- examples.  If you read the call waiting specifications, certain
feature interactions require only a single application of the call wait tone
as well.  These all lead to the conclusion that I stated earlier: Call wait
is a discrete signal applied multiple times.
 
Kevin


  _____  

From: Dal Chohan [mailto:D.Chohan@ftel.co.uk] 
Sent: Thursday, February 05, 2004 4:18 AM
To: Raphael Tryster; megaco@ietf.org
Subject: Re: [Megaco] H.248.23 Enhanced Alerting Package.


Raphael 
 
Thanks for the response -  but I don't see why the Call Waiting can't be
repeatedly applied just like ringing. If the Callee flashes, then the
detection of the event will stop the signal as per standard H.248 behaviour
and if the waiting party hangs up, then the MGC will instruct the MG to stop
applying the signal via a new signal descriptor.
 
Dal Chohan.

----- Original Message ----- 
From: Raphael  <mailto:raphael@tdsoft.com> Tryster 
To: 'Dal Chohan' <mailto:D.Chohan@ftel.co.uk>  ; megaco@ietf.org
<mailto:megaco@ietf.org>  
Sent: Wednesday, February 04, 2004 4:26 PM
Subject: RE: [Megaco] H.248.23 Enhanced Alerting Package.


Kevin Boyle answered this question recently: 


Call wait patterns are generally replayed after a short amount of time (10
seconds in North America).  Note that this is not a repetition -- this is
actually a second distinct application of the signal.  There are several
feature scenarios where the second signal will not be applied -- if the
waiting party hangs up, or if the callee flashes, to name a couple.


As for the dt package, I believe the characterization of call wait tone as
timeout is erroneous, although previous attempts to fix it have been
rejected.  I wrote the alerting package to be local-variant unaware, leaving
it to the MG to be responsible for how the signals should be applied to its
terminations.  Note that most localities have more than one wait tone
pattern, to allow for assignable distinctive tones (similar to assigning
distinctive ringing patterns to different incoming callers).


I see no reason to use dt/cw if using alert/cw.  The alerting package
provides far more functionality than the dt package for both ringing and
call waiting.


Kevin 


  _____  



	From: Raphael Tryster  <mailto:[mailto:raphael@tdsoft.com]>
[mailto:raphael@tdsoft.com]
Sent: Thursday, January 08, 2004 5:39 AM
To: Boyle, Kevin [NCRTP:3Z40:EXCH];  <mailto:megaco@ietf.org>
megaco@ietf.org
Subject: call waiting signal type



	In draft_boyle_megaco_alerting_03.txt, the alert/cw signal has type
brief, whereas the standard signal dt/cw apparently has type timeout.  Is
this a matter of national protocol?  The description of alert/cw says "Call
wait patterns do not repeat".  In Israel, a call waiting signal consists of
3 short tones, repeated once a few seconds later.

	If it is a matter of national protocol, does this mean that a
particular installation will use either alert/cw or dt/cw, but not both?

	Raphael Tryster 


	BM__MailData-----Original Message----- 
From:   Dal Chohan [SMTP:D.Chohan@ftel.co.uk] 
Sent:   Wednesday, 4 February 2004 18:12 
To:     megaco@ietf.org 
Subject:        [Megaco] H.248.23 Enhanced Alerting Package. 

	
The description of the "Call Waiting" signal defined in H.248.23 specifies
that call waiting patterns do not repeat - Is this correct?

	
I would have thought that for a Call Waiting service that it would would
make perfect sense for the "call waiting" pattern to be repeatedly applied
by the MG until it was told to stop the call waiting signal by the MGC (c.f.
ringing) . It is the MGC that determines the interval within which the
waiting call should be accepted and thus determines the overall duration of
the call waiting pattern.

	
  
  
Dal Chohan



_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco



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To: "Kevin Boyle" <kboyle@nortelnetworks.com>,
        "Raphael Tryster" <raphael@tdsoft.com>, <megaco@ietf.org>
References: <ABA227A15B80D511BD1A00508BF93A1C0E660D7E@zrtpd0jq.us.nortel.com>
Subject: Re: [Megaco] H.248.23 Enhanced Alerting Package.
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RE: [Megaco] H.248.23 Enhanced Alerting Package.Sorry, but I think you =
have missed the point that I am making - H.248.23 states that Call Wait =
patterns do not repeat and to me this means that you cannot apply the =
Call Waiting tone repeatedly and I see no reason for such a restriction.

I can think of an implementation of Call Waiting for example in the UK =
where it would be advantageous for the Call Waiting tone to be =
repeatedly applied by the MG, rather than defining the distinct number =
of cycles of Call Waiting that should be applied at the MG as determined =
by the pattern parameter. This approach minimises the configuration in =
the MG and lets the MGC determine the number of cycles of Call Waiting =
that should be applied, which it does know anyway since it is running an =
overall timer within which the waiting call should be accepted.

Some additional comments in-line.


Dal Chohan.



----- Original Message -----=20
  From: Kevin Boyle=20
  To: Dal Chohan ; Raphael Tryster ; megaco@ietf.org=20
  Sent: Thursday, February 05, 2004 12:27 PM
  Subject: RE: [Megaco] H.248.23 Enhanced Alerting Package.


  So, you would rather need two messages to play the tone once and one =
message to play the tone twice?  That is incredibly non-intuitive.

  [DC] I didn't say that - Isn't that the purpose of the pattern =
parameter to define the duration of the Call Waiting tone, so for =
example pattern 1 could mean apply the Call Waiting tone indefinitely =
and pattern 2 could mean apply one pulse of Call Waiting tone.


  Call wait generally has a very long interval between occurrences, and =
is generally limited to two occurrences. =20

  [DC] The two ocurrences may true for the US market, but this isn't the =
case for the UK.

  Ringing, on the other hand, does not have a long interval (as compared =
to the length of the audible signal) and is always applied indefinitely. =
 Further, the two examples I gave are just that -- examples.  If you =
read the call waiting specifications, certain feature interactions =
require only a single application of the call wait tone as well.  These =
all lead to the conclusion that I stated earlier: Call wait is a =
discrete signal applied multiple times.

  [DC] I have no problem with treating the signal as a pulsed signal =
that is applied multiple times, but the current text states that =
"multiple" cannnot be of an infinite value and I think the UK Call =
Waiting service operation could benefit from this latter mode of =
working.

  Kevin



-------------------------------------------------------------------------=
---
    From: Dal Chohan [mailto:D.Chohan@ftel.co.uk]=20
    Sent: Thursday, February 05, 2004 4:18 AM
    To: Raphael Tryster; megaco@ietf.org
    Subject: Re: [Megaco] H.248.23 Enhanced Alerting Package.


    Raphael=20

    Thanks for the response -  but I don't see why the Call Waiting =
can't be repeatedly applied just like ringing. If the Callee flashes, =
then the detection of the event will stop the signal as per standard =
H.248 behaviour and if the waiting party hangs up, then the MGC will =
instruct the MG to stop applying the signal via a new signal descriptor.

    Dal Chohan.
      ----- Original Message -----=20
      From: Raphael Tryster=20
      To: 'Dal Chohan' ; megaco@ietf.org=20
      Sent: Wednesday, February 04, 2004 4:26 PM
      Subject: RE: [Megaco] H.248.23 Enhanced Alerting Package.


      Kevin Boyle answered this question recently:=20



      Call wait patterns are generally replayed after a short amount of =
time (10 seconds in North America).  Note that this is not a repetition =
-- this is actually a second distinct application of the signal.  There =
are several feature scenarios where the second signal will not be =
applied -- if the waiting party hangs up, or if the callee flashes, to =
name a couple.


      As for the dt package, I believe the characterization of call wait =
tone as timeout is erroneous, although previous attempts to fix it have =
been rejected.  I wrote the alerting package to be local-variant =
unaware, leaving it to the MG to be responsible for how the signals =
should be applied to its terminations.  Note that most localities have =
more than one wait tone pattern, to allow for assignable distinctive =
tones (similar to assigning distinctive ringing patterns to different =
incoming callers).


      I see no reason to use dt/cw if using alert/cw.  The alerting =
package provides far more functionality than the dt package for both =
ringing and call waiting.


      Kevin=20



        _____ =20


        From: Raphael Tryster [mailto:raphael@tdsoft.com]
        Sent: Thursday, January 08, 2004 5:39 AM
        To: Boyle, Kevin [NCRTP:3Z40:EXCH]; megaco@ietf.org
        Subject: call waiting signal type



        In draft_boyle_megaco_alerting_03.txt, the alert/cw signal has =
type brief, whereas the standard signal dt/cw apparently has type =
timeout.  Is this a matter of national protocol?  The description of =
alert/cw says "Call wait patterns do not repeat".  In Israel, a call =
waiting signal consists of 3 short tones, repeated once a few seconds =
later.

        If it is a matter of national protocol, does this mean that a =
particular installation will use either alert/cw or dt/cw, but not both?

        Raphael Tryster=20



        -----Original Message-----=20
        From:   Dal Chohan [SMTP:D.Chohan@ftel.co.uk]=20
        Sent:   Wednesday, 4 February 2004 18:12=20
        To:     megaco@ietf.org=20
        Subject:        [Megaco] H.248.23 Enhanced Alerting Package.=20


        The description of the "Call Waiting" signal defined in H.248.23 =
specifies that call waiting patterns do not repeat - Is this correct?


        I would have thought that for a Call Waiting service that it =
would would make perfect sense for the "call waiting" pattern to be =
repeatedly applied by the MG until it was told to stop the call waiting =
signal by the MGC (c.f. ringing) . It is the MGC that determines the =
interval within which the waiting call should be accepted and thus =
determines the overall duration of the call waiting pattern.


         =20
         =20
        Dal Chohan


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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD><TITLE>RE: [Megaco] H.248.23 Enhanced Alerting =
Package.</TITLE>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<META content=3D"MSHTML 6.00.2800.1276" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Sorry, but I think you have missed the =
point that I=20
am making - H.248.23 states that Call Wait patterns do not repeat and to =
me this=20
means that you cannot apply the Call Waiting tone repeatedly&nbsp;and I =
see no=20
reason for such a restriction.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>I can think of an implementation of =
Call Waiting=20
for example in the UK where it would be advantageous for the Call =
Waiting tone=20
to be repeatedly applied by the MG, rather than defining the distinct =
number of=20
cycles of Call Waiting that should be applied at the MG as determined by =
the=20
pattern parameter. This approach minimises the configuration in the MG =
and lets=20
the MGC determine the number of cycles of Call Waiting that should be =
applied,=20
which it does know anyway since it is running an overall timer within =
which the=20
waiting call should be accepted.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Some additional comments =
in-line.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Dal Chohan.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV>&nbsp;</DIV>
<DIV>----- Original Message ----- </DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
  <DIV=20
  style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
  <A title=3Dkboyle@nortelnetworks.com=20
  href=3D"mailto:kboyle@nortelnetworks.com">Kevin Boyle</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3DD.Chohan@ftel.co.uk=20
  href=3D"mailto:D.Chohan@ftel.co.uk">Dal Chohan</A> ; <A =
title=3Draphael@tdsoft.com=20
  href=3D"mailto:raphael@tdsoft.com">Raphael Tryster</A> ; <A=20
  title=3Dmegaco@ietf.org =
href=3D"mailto:megaco@ietf.org">megaco@ietf.org</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Thursday, February 05, =
2004 12:27=20
  PM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> RE: [Megaco] H.248.23 =
Enhanced=20
  Alerting Package.</DIV>
  <DIV><FONT face=3DArial size=3D2></FONT><BR></DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2>So, you would rather need two messages to play the tone once =
and one=20
  message to play the tone twice?&nbsp; That is incredibly=20
  non-intuitive.</FONT></SPAN></DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2></FONT></SPAN>&nbsp;</DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2>[DC] I didn't say that - Isn't that the purpose of the =
pattern=20
  parameter to define the duration of the Call Waiting tone, so for =
example=20
  pattern 1 could mean apply the Call Waiting tone indefinitely and =
pattern 2=20
  could mean apply one pulse of Call Waiting tone.</FONT></SPAN></DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2></FONT></SPAN>&nbsp;</DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2></FONT></SPAN>&nbsp;</DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2>Call wait generally has a very long interval between =
occurrences, and=20
  is generally limited to two occurrences.&nbsp; </FONT></SPAN></DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2></FONT></SPAN>&nbsp;</DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2>[DC] The two ocurrences may true for the US market, but =
this&nbsp;isn't=20
  the case for the UK.</FONT></SPAN></DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2></FONT></SPAN>&nbsp;</DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2>Ringing, on the other hand, does not have a long interval (as =
compared=20
  to the length of the audible signal) and is always applied =
indefinitely.&nbsp;=20
  Further, the two examples I gave are just that -- examples.&nbsp; If =
you read=20
  the call waiting specifications, certain feature interactions require =
only a=20
  single application of the call wait tone as well.&nbsp; These all lead =
to the=20
  conclusion that I stated earlier: Call wait is a discrete signal =
applied=20
  multiple times.</FONT></SPAN></DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2></FONT></SPAN>&nbsp;</DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2>[DC] I have no problem with treating the signal as a pulsed =
signal that=20
  is applied multiple times, but the current text states that "multiple" =
cannnot=20
  be of an infinite value and I think the UK Call Waiting service =
operation=20
  could benefit from this latter mode of working.</FONT></SPAN></DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2></FONT></SPAN>&nbsp;</DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2>Kevin</FONT></SPAN></DIV><BR>
  <BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
    <DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr =
align=3Dleft>
    <HR tabIndex=3D-1>
    <FONT face=3DTahoma size=3D2><B>From:</B> Dal Chohan=20
    [mailto:D.Chohan@ftel.co.uk] <BR><B>Sent:</B> Thursday, February 05, =
2004=20
    4:18 AM<BR><B>To:</B> Raphael Tryster; =
megaco@ietf.org<BR><B>Subject:</B>=20
    Re: [Megaco] H.248.23 Enhanced Alerting =
Package.<BR></FONT><BR></DIV>
    <DIV></DIV>
    <DIV><FONT face=3DArial size=3D2><FONT face=3DTahoma>Raphael =
</FONT></FONT></DIV>
    <DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
    <DIV><FONT face=3DArial size=3D2>Thanks for the response =
-&nbsp;</FONT><FONT=20
    face=3DArial size=3D2>&nbsp;but I don't see why the Call Waiting =
can't be=20
    repeatedly <FONT face=3DTahoma>applied </FONT>just like ringing. If =
the Callee=20
    flashes, then the detection of the event will stop the signal as per =

    standard H.248 behaviour and if the waiting party hangs up, then the =
MGC=20
    will instruct the MG to stop applying the signal via a new signal=20
    descriptor.</FONT></DIV>
    <DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
    <DIV><FONT face=3DArial size=3D2>Dal Chohan.</FONT></DIV>
    <BLOCKQUOTE=20
    style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
      <DIV style=3D"FONT: 10pt arial">----- Original Message ----- =
</DIV>
      <DIV=20
      style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
      <A title=3Draphael@tdsoft.com =
href=3D"mailto:raphael@tdsoft.com">Raphael=20
      Tryster</A> </DIV>
      <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3DD.Chohan@ftel.co.uk=20
      href=3D"mailto:D.Chohan@ftel.co.uk">'Dal Chohan'</A> ; <A=20
      title=3Dmegaco@ietf.org =
href=3D"mailto:megaco@ietf.org">megaco@ietf.org</A>=20
      </DIV>
      <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Wednesday, February =
04, 2004=20
      4:26 PM</DIV>
      <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> RE: [Megaco] =
H.248.23=20
      Enhanced Alerting Package.</DIV>
      <DIV><BR></DIV>
      <P><FONT face=3DArial size=3D2>Kevin Boyle answered this question=20
      recently:</FONT> </P><BR>
      <P><FONT face=3DArial size=3D2>Call wait patterns are generally =
replayed after=20
      a short amount of time (10 seconds in North America).&nbsp; Note =
that this=20
      is not a repetition -- this is actually a second distinct =
application of=20
      the signal.&nbsp; There are several feature scenarios where the =
second=20
      signal will not be applied -- if the waiting party hangs up, or if =
the=20
      callee flashes, to name a couple.</FONT></P>
      <P><FONT face=3DArial></FONT><BR><FONT face=3DArial size=3D2>As =
for the dt=20
      package, I believe the characterization of call wait tone as =
timeout is=20
      erroneous, although previous attempts to fix it have been =
rejected.&nbsp;=20
      I wrote the alerting package to be local-variant unaware, leaving =
it to=20
      the MG to be responsible for how the signals should be applied to =
its=20
      terminations.&nbsp; Note that most localities have more than one =
wait tone=20
      pattern, to allow for assignable distinctive tones (similar to =
assigning=20
      distinctive ringing patterns to different incoming =
callers).</FONT></P>
      <P><FONT face=3DArial></FONT><BR><FONT face=3DArial size=3D2>I see =
no reason to=20
      use dt/cw if using alert/cw.&nbsp; The alerting package provides =
far more=20
      functionality than the dt package for both ringing and call=20
      waiting.</FONT></P>
      <P><FONT face=3DArial></FONT><BR><FONT face=3DArial =
size=3D2>Kevin</FONT>=20
      </P><BR>
      <P><U><FONT face=3D"Courier New">&nbsp; _____ =
&nbsp;<BR></FONT></U>
      <UL>
        <P><B><FONT face=3DTahoma size=3D2>From:</FONT></B><FONT =
face=3DTahoma size=3D2>=20
        Raphael Tryster</FONT> <A=20
        href=3D"mailto:[mailto:raphael@tdsoft.com]"><U><FONT =
face=3DArial=20
        color=3D#0000ff =
size=3D2>[mailto:raphael@tdsoft.com]</FONT></U></A><FONT=20
        face=3DTahoma size=3D2><BR></FONT><B></B><B><FONT face=3DTahoma=20
        size=3D2>Sent:</FONT></B><FONT face=3DTahoma size=3D2> Thursday, =
January 08,=20
        2004 5:39 AM<BR></FONT><B></B><B><FONT face=3DTahoma=20
        size=3D2>To:</FONT></B><FONT face=3DTahoma size=3D2> Boyle, =
Kevin=20
        [NCRTP:3Z40:EXCH];</FONT> <A =
href=3D"mailto:megaco@ietf.org"><U><FONT=20
        face=3DArial color=3D#0000ff=20
        size=3D2>megaco@ietf.org</FONT></U></A><BR><B></B><B><FONT =
face=3DTahoma=20
        size=3D2>Subject:</FONT></B><FONT face=3DTahoma size=3D2> call =
waiting signal=20
        type<BR></FONT><BR></P>
        <P><FONT face=3DArial size=3D2>In</FONT><FONT =
face=3DArial></FONT> <FONT=20
        face=3DArial size=3D2>draft_boyle_megaco_alerting_03.txt, the =
alert/cw=20
        signal has type brief, whereas the standard signal dt/cw =
apparently has=20
        type timeout.&nbsp; Is this a matter of national protocol?&nbsp; =
The=20
        description of alert/cw says "Call wait patterns do not =
repeat".&nbsp;=20
        In Israel, a call waiting signal consists of 3 short tones, =
repeated=20
        once a few seconds later.</FONT></P>
        <P><FONT face=3DArial size=3D2>If it is a matter of national =
protocol, does=20
        this mean that a particular installation will use either =
alert/cw or=20
        dt/cw, but not both?</FONT></P>
        <P><FONT face=3DTahoma size=3D2>Raphael Tryster</FONT><FONT =
face=3DArial>=20
        </FONT></P><BR>
        <P><A name=3D_MailData><FONT face=3DArial size=3D2>-----Original =

        Message-----</FONT></A> <BR><B><FONT face=3DArial =
size=3D2>From:&nbsp;&nbsp;=20
        Dal Chohan [SMTP:D.Chohan@ftel.co.uk]</FONT></B> <BR><B><FONT =
face=3DArial=20
        size=3D2>Sent:&nbsp;&nbsp;</FONT></B> <FONT face=3DArial =
size=3D2>Wednesday, 4=20
        February 2004 18:12</FONT> <BR><B><FONT face=3DArial=20
        size=3D2>To:&nbsp;&nbsp;&nbsp;&nbsp;</FONT></B> <FONT =
face=3DArial=20
        size=3D2>megaco@ietf.org</FONT> <BR><B><FONT face=3DArial=20
        =
size=3D2>Subject:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></B>=20
        <FONT face=3DArial size=3D2>[Megaco] H.248.23 Enhanced Alerting=20
        Package.</FONT> </P>
        <P><FONT face=3DArial></FONT><BR><FONT face=3DArial size=3D2>The =
description=20
        of the "Call Waiting" signal defined in H.248.23 specifies that =
call=20
        waiting patterns do not repeat - Is this correct?</FONT></P>
        <P><FONT face=3DArial></FONT><FONT face=3DArial></FONT><BR><FONT =
face=3DArial=20
        size=3D2>I would have thought that for a Call Waiting service =
that it=20
        would would make perfect sense for the "call waiting" pattern to =
be=20
        repeatedly applied by the MG until it was told to stop the call =
waiting=20
        signal by the MGC (c.f. ringing) .&nbsp;It is the MGC=20
        that&nbsp;determines the interval within which the waiting call =
should=20
        be accepted and thus determines the overall duration of =
the&nbsp;call=20
        waiting pattern.</FONT></P>
        <P><FONT face=3DArial></FONT><BR><FONT =
face=3DArial>&nbsp;</FONT> <BR><FONT=20
        face=3DArial>&nbsp;</FONT> <BR><FONT face=3DArial size=3D2>Dal=20
        =
Chohan<BR></FONT></P></UL></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BODY><=
/HTML>

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Message-ID: <00de01c3ebf0$2e1c7080$403010ac@DALLAPTOP>
From: "Dal Chohan" <D.Chohan@ftel.co.uk>
To: "Kevin Boyle" <kboyle@nortelnetworks.com>,
        "Raphael Tryster" <raphael@tdsoft.com>, <megaco@ietf.org>
References: <ABA227A15B80D511BD1A00508BF93A1C0E660D7E@zrtpd0jq.us.nortel.com>
Subject: Re: [Megaco] H.248.23 Enhanced Alerting Package.
Date: Thu, 5 Feb 2004 13:58:43 -0000
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RE: [Megaco] H.248.23 Enhanced Alerting Package.Sorry, but I think you =
have missed the point that I am making - H.248.23 states that Call Wait =
patterns do not repeat and to me this means that you cannot apply the =
Call Waiting tone repeatedly and I see no reason for such a restriction.

I can think of an implementation of Call Waiting for example in the UK =
where it would be advantageous for the Call Waiting tone to be =
repeatedly applied by the MG, rather than defining the distinct number =
of cycles of Call Waiting that should be applied at the MG as determined =
by the pattern parameter. This approach minimises the configuration in =
the MG and lets the MGC determine the number of cycles of Call Waiting =
that should be applied, which it does know anyway since it is running an =
overall timer within which the waiting call should be accepted.

Some additional comments in-line.


Dal Chohan.



----- Original Message -----=20
  From: Kevin Boyle=20
  To: Dal Chohan ; Raphael Tryster ; megaco@ietf.org=20
  Sent: Thursday, February 05, 2004 12:27 PM
  Subject: RE: [Megaco] H.248.23 Enhanced Alerting Package.


  So, you would rather need two messages to play the tone once and one =
message to play the tone twice?  That is incredibly non-intuitive.

  [DC] I didn't say that - Isn't that the purpose of the pattern =
parameter to define the duration of the Call Waiting tone, so for =
example pattern 1 could mean apply the Call Waiting tone indefinitely =
and pattern 2 could mean apply one pulse of Call Waiting tone.


  Call wait generally has a very long interval between occurrences, and =
is generally limited to two occurrences. =20

  [DC] The two ocurrences may true for the US market, but this isn't the =
case for the UK.

  Ringing, on the other hand, does not have a long interval (as compared =
to the length of the audible signal) and is always applied indefinitely. =
 Further, the two examples I gave are just that -- examples.  If you =
read the call waiting specifications, certain feature interactions =
require only a single application of the call wait tone as well.  These =
all lead to the conclusion that I stated earlier: Call wait is a =
discrete signal applied multiple times.

  [DC] I have no problem with treating the signal as a pulsed signal =
that is applied multiple times, but the current text states that =
"multiple" cannnot be of an infinite value and I think the UK Call =
Waiting service operation could benefit from this latter mode of =
working.

  Kevin



-------------------------------------------------------------------------=
---
    From: Dal Chohan [mailto:D.Chohan@ftel.co.uk]=20
    Sent: Thursday, February 05, 2004 4:18 AM
    To: Raphael Tryster; megaco@ietf.org
    Subject: Re: [Megaco] H.248.23 Enhanced Alerting Package.


    Raphael=20

    Thanks for the response -  but I don't see why the Call Waiting =
can't be repeatedly applied just like ringing. If the Callee flashes, =
then the detection of the event will stop the signal as per standard =
H.248 behaviour and if the waiting party hangs up, then the MGC will =
instruct the MG to stop applying the signal via a new signal descriptor.

    Dal Chohan.
      ----- Original Message -----=20
      From: Raphael Tryster=20
      To: 'Dal Chohan' ; megaco@ietf.org=20
      Sent: Wednesday, February 04, 2004 4:26 PM
      Subject: RE: [Megaco] H.248.23 Enhanced Alerting Package.


      Kevin Boyle answered this question recently:=20



      Call wait patterns are generally replayed after a short amount of =
time (10 seconds in North America).  Note that this is not a repetition =
-- this is actually a second distinct application of the signal.  There =
are several feature scenarios where the second signal will not be =
applied -- if the waiting party hangs up, or if the callee flashes, to =
name a couple.


      As for the dt package, I believe the characterization of call wait =
tone as timeout is erroneous, although previous attempts to fix it have =
been rejected.  I wrote the alerting package to be local-variant =
unaware, leaving it to the MG to be responsible for how the signals =
should be applied to its terminations.  Note that most localities have =
more than one wait tone pattern, to allow for assignable distinctive =
tones (similar to assigning distinctive ringing patterns to different =
incoming callers).


      I see no reason to use dt/cw if using alert/cw.  The alerting =
package provides far more functionality than the dt package for both =
ringing and call waiting.


      Kevin=20



        _____ =20


        From: Raphael Tryster [mailto:raphael@tdsoft.com]
        Sent: Thursday, January 08, 2004 5:39 AM
        To: Boyle, Kevin [NCRTP:3Z40:EXCH]; megaco@ietf.org
        Subject: call waiting signal type



        In draft_boyle_megaco_alerting_03.txt, the alert/cw signal has =
type brief, whereas the standard signal dt/cw apparently has type =
timeout.  Is this a matter of national protocol?  The description of =
alert/cw says "Call wait patterns do not repeat".  In Israel, a call =
waiting signal consists of 3 short tones, repeated once a few seconds =
later.

        If it is a matter of national protocol, does this mean that a =
particular installation will use either alert/cw or dt/cw, but not both?

        Raphael Tryster=20



        -----Original Message-----=20
        From:   Dal Chohan [SMTP:D.Chohan@ftel.co.uk]=20
        Sent:   Wednesday, 4 February 2004 18:12=20
        To:     megaco@ietf.org=20
        Subject:        [Megaco] H.248.23 Enhanced Alerting Package.=20


        The description of the "Call Waiting" signal defined in H.248.23 =
specifies that call waiting patterns do not repeat - Is this correct?


        I would have thought that for a Call Waiting service that it =
would would make perfect sense for the "call waiting" pattern to be =
repeatedly applied by the MG until it was told to stop the call waiting =
signal by the MGC (c.f. ringing) . It is the MGC that determines the =
interval within which the waiting call should be accepted and thus =
determines the overall duration of the call waiting pattern.


         =20
         =20
        Dal Chohan


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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD><TITLE>RE: [Megaco] H.248.23 Enhanced Alerting =
Package.</TITLE>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<META content=3D"MSHTML 6.00.2800.1276" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Sorry, but I think you have missed the =
point that I=20
am making - H.248.23 states that Call Wait patterns do not repeat and to =
me this=20
means that you cannot apply the Call Waiting tone repeatedly&nbsp;and I =
see no=20
reason for such a restriction.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>I can think of an implementation of =
Call Waiting=20
for example in the UK where it would be advantageous for the Call =
Waiting tone=20
to be repeatedly applied by the MG, rather than defining the distinct =
number of=20
cycles of Call Waiting that should be applied at the MG as determined by =
the=20
pattern parameter. This approach minimises the configuration in the MG =
and lets=20
the MGC determine the number of cycles of Call Waiting that should be =
applied,=20
which it does know anyway since it is running an overall timer within =
which the=20
waiting call should be accepted.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Some additional comments =
in-line.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Dal Chohan.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV>&nbsp;</DIV>
<DIV>----- Original Message ----- </DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
  <DIV=20
  style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
  <A title=3Dkboyle@nortelnetworks.com=20
  href=3D"mailto:kboyle@nortelnetworks.com">Kevin Boyle</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3DD.Chohan@ftel.co.uk=20
  href=3D"mailto:D.Chohan@ftel.co.uk">Dal Chohan</A> ; <A =
title=3Draphael@tdsoft.com=20
  href=3D"mailto:raphael@tdsoft.com">Raphael Tryster</A> ; <A=20
  title=3Dmegaco@ietf.org =
href=3D"mailto:megaco@ietf.org">megaco@ietf.org</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Thursday, February 05, =
2004 12:27=20
  PM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> RE: [Megaco] H.248.23 =
Enhanced=20
  Alerting Package.</DIV>
  <DIV><FONT face=3DArial size=3D2></FONT><BR></DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2>So, you would rather need two messages to play the tone once =
and one=20
  message to play the tone twice?&nbsp; That is incredibly=20
  non-intuitive.</FONT></SPAN></DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2></FONT></SPAN>&nbsp;</DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2>[DC] I didn't say that - Isn't that the purpose of the =
pattern=20
  parameter to define the duration of the Call Waiting tone, so for =
example=20
  pattern 1 could mean apply the Call Waiting tone indefinitely and =
pattern 2=20
  could mean apply one pulse of Call Waiting tone.</FONT></SPAN></DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2></FONT></SPAN>&nbsp;</DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2></FONT></SPAN>&nbsp;</DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2>Call wait generally has a very long interval between =
occurrences, and=20
  is generally limited to two occurrences.&nbsp; </FONT></SPAN></DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2></FONT></SPAN>&nbsp;</DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2>[DC] The two ocurrences may true for the US market, but =
this&nbsp;isn't=20
  the case for the UK.</FONT></SPAN></DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2></FONT></SPAN>&nbsp;</DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2>Ringing, on the other hand, does not have a long interval (as =
compared=20
  to the length of the audible signal) and is always applied =
indefinitely.&nbsp;=20
  Further, the two examples I gave are just that -- examples.&nbsp; If =
you read=20
  the call waiting specifications, certain feature interactions require =
only a=20
  single application of the call wait tone as well.&nbsp; These all lead =
to the=20
  conclusion that I stated earlier: Call wait is a discrete signal =
applied=20
  multiple times.</FONT></SPAN></DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2></FONT></SPAN>&nbsp;</DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2>[DC] I have no problem with treating the signal as a pulsed =
signal that=20
  is applied multiple times, but the current text states that "multiple" =
cannnot=20
  be of an infinite value and I think the UK Call Waiting service =
operation=20
  could benefit from this latter mode of working.</FONT></SPAN></DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2></FONT></SPAN>&nbsp;</DIV>
  <DIV dir=3Dltr align=3Dleft><SPAN class=3D580441312-05022004><FONT =
face=3DArial=20
  size=3D2>Kevin</FONT></SPAN></DIV><BR>
  <BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
    <DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr =
align=3Dleft>
    <HR tabIndex=3D-1>
    <FONT face=3DTahoma size=3D2><B>From:</B> Dal Chohan=20
    [mailto:D.Chohan@ftel.co.uk] <BR><B>Sent:</B> Thursday, February 05, =
2004=20
    4:18 AM<BR><B>To:</B> Raphael Tryster; =
megaco@ietf.org<BR><B>Subject:</B>=20
    Re: [Megaco] H.248.23 Enhanced Alerting =
Package.<BR></FONT><BR></DIV>
    <DIV></DIV>
    <DIV><FONT face=3DArial size=3D2><FONT face=3DTahoma>Raphael =
</FONT></FONT></DIV>
    <DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
    <DIV><FONT face=3DArial size=3D2>Thanks for the response =
-&nbsp;</FONT><FONT=20
    face=3DArial size=3D2>&nbsp;but I don't see why the Call Waiting =
can't be=20
    repeatedly <FONT face=3DTahoma>applied </FONT>just like ringing. If =
the Callee=20
    flashes, then the detection of the event will stop the signal as per =

    standard H.248 behaviour and if the waiting party hangs up, then the =
MGC=20
    will instruct the MG to stop applying the signal via a new signal=20
    descriptor.</FONT></DIV>
    <DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
    <DIV><FONT face=3DArial size=3D2>Dal Chohan.</FONT></DIV>
    <BLOCKQUOTE=20
    style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
      <DIV style=3D"FONT: 10pt arial">----- Original Message ----- =
</DIV>
      <DIV=20
      style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
      <A title=3Draphael@tdsoft.com =
href=3D"mailto:raphael@tdsoft.com">Raphael=20
      Tryster</A> </DIV>
      <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3DD.Chohan@ftel.co.uk=20
      href=3D"mailto:D.Chohan@ftel.co.uk">'Dal Chohan'</A> ; <A=20
      title=3Dmegaco@ietf.org =
href=3D"mailto:megaco@ietf.org">megaco@ietf.org</A>=20
      </DIV>
      <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Wednesday, February =
04, 2004=20
      4:26 PM</DIV>
      <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> RE: [Megaco] =
H.248.23=20
      Enhanced Alerting Package.</DIV>
      <DIV><BR></DIV>
      <P><FONT face=3DArial size=3D2>Kevin Boyle answered this question=20
      recently:</FONT> </P><BR>
      <P><FONT face=3DArial size=3D2>Call wait patterns are generally =
replayed after=20
      a short amount of time (10 seconds in North America).&nbsp; Note =
that this=20
      is not a repetition -- this is actually a second distinct =
application of=20
      the signal.&nbsp; There are several feature scenarios where the =
second=20
      signal will not be applied -- if the waiting party hangs up, or if =
the=20
      callee flashes, to name a couple.</FONT></P>
      <P><FONT face=3DArial></FONT><BR><FONT face=3DArial size=3D2>As =
for the dt=20
      package, I believe the characterization of call wait tone as =
timeout is=20
      erroneous, although previous attempts to fix it have been =
rejected.&nbsp;=20
      I wrote the alerting package to be local-variant unaware, leaving =
it to=20
      the MG to be responsible for how the signals should be applied to =
its=20
      terminations.&nbsp; Note that most localities have more than one =
wait tone=20
      pattern, to allow for assignable distinctive tones (similar to =
assigning=20
      distinctive ringing patterns to different incoming =
callers).</FONT></P>
      <P><FONT face=3DArial></FONT><BR><FONT face=3DArial size=3D2>I see =
no reason to=20
      use dt/cw if using alert/cw.&nbsp; The alerting package provides =
far more=20
      functionality than the dt package for both ringing and call=20
      waiting.</FONT></P>
      <P><FONT face=3DArial></FONT><BR><FONT face=3DArial =
size=3D2>Kevin</FONT>=20
      </P><BR>
      <P><U><FONT face=3D"Courier New">&nbsp; _____ =
&nbsp;<BR></FONT></U>
      <UL>
        <P><B><FONT face=3DTahoma size=3D2>From:</FONT></B><FONT =
face=3DTahoma size=3D2>=20
        Raphael Tryster</FONT> <A=20
        href=3D"mailto:[mailto:raphael@tdsoft.com]"><U><FONT =
face=3DArial=20
        color=3D#0000ff =
size=3D2>[mailto:raphael@tdsoft.com]</FONT></U></A><FONT=20
        face=3DTahoma size=3D2><BR></FONT><B></B><B><FONT face=3DTahoma=20
        size=3D2>Sent:</FONT></B><FONT face=3DTahoma size=3D2> Thursday, =
January 08,=20
        2004 5:39 AM<BR></FONT><B></B><B><FONT face=3DTahoma=20
        size=3D2>To:</FONT></B><FONT face=3DTahoma size=3D2> Boyle, =
Kevin=20
        [NCRTP:3Z40:EXCH];</FONT> <A =
href=3D"mailto:megaco@ietf.org"><U><FONT=20
        face=3DArial color=3D#0000ff=20
        size=3D2>megaco@ietf.org</FONT></U></A><BR><B></B><B><FONT =
face=3DTahoma=20
        size=3D2>Subject:</FONT></B><FONT face=3DTahoma size=3D2> call =
waiting signal=20
        type<BR></FONT><BR></P>
        <P><FONT face=3DArial size=3D2>In</FONT><FONT =
face=3DArial></FONT> <FONT=20
        face=3DArial size=3D2>draft_boyle_megaco_alerting_03.txt, the =
alert/cw=20
        signal has type brief, whereas the standard signal dt/cw =
apparently has=20
        type timeout.&nbsp; Is this a matter of national protocol?&nbsp; =
The=20
        description of alert/cw says "Call wait patterns do not =
repeat".&nbsp;=20
        In Israel, a call waiting signal consists of 3 short tones, =
repeated=20
        once a few seconds later.</FONT></P>
        <P><FONT face=3DArial size=3D2>If it is a matter of national =
protocol, does=20
        this mean that a particular installation will use either =
alert/cw or=20
        dt/cw, but not both?</FONT></P>
        <P><FONT face=3DTahoma size=3D2>Raphael Tryster</FONT><FONT =
face=3DArial>=20
        </FONT></P><BR>
        <P><A name=3D_MailData><FONT face=3DArial size=3D2>-----Original =

        Message-----</FONT></A> <BR><B><FONT face=3DArial =
size=3D2>From:&nbsp;&nbsp;=20
        Dal Chohan [SMTP:D.Chohan@ftel.co.uk]</FONT></B> <BR><B><FONT =
face=3DArial=20
        size=3D2>Sent:&nbsp;&nbsp;</FONT></B> <FONT face=3DArial =
size=3D2>Wednesday, 4=20
        February 2004 18:12</FONT> <BR><B><FONT face=3DArial=20
        size=3D2>To:&nbsp;&nbsp;&nbsp;&nbsp;</FONT></B> <FONT =
face=3DArial=20
        size=3D2>megaco@ietf.org</FONT> <BR><B><FONT face=3DArial=20
        =
size=3D2>Subject:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></B>=20
        <FONT face=3DArial size=3D2>[Megaco] H.248.23 Enhanced Alerting=20
        Package.</FONT> </P>
        <P><FONT face=3DArial></FONT><BR><FONT face=3DArial size=3D2>The =
description=20
        of the "Call Waiting" signal defined in H.248.23 specifies that =
call=20
        waiting patterns do not repeat - Is this correct?</FONT></P>
        <P><FONT face=3DArial></FONT><FONT face=3DArial></FONT><BR><FONT =
face=3DArial=20
        size=3D2>I would have thought that for a Call Waiting service =
that it=20
        would would make perfect sense for the "call waiting" pattern to =
be=20
        repeatedly applied by the MG until it was told to stop the call =
waiting=20
        signal by the MGC (c.f. ringing) .&nbsp;It is the MGC=20
        that&nbsp;determines the interval within which the waiting call =
should=20
        be accepted and thus determines the overall duration of =
the&nbsp;call=20
        waiting pattern.</FONT></P>
        <P><FONT face=3DArial></FONT><BR><FONT =
face=3DArial>&nbsp;</FONT> <BR><FONT=20
        face=3DArial>&nbsp;</FONT> <BR><FONT face=3DArial size=3D2>Dal=20
        =
Chohan<BR></FONT></P></UL></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BODY><=
/HTML>

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<html><div style='background-color:'><P>Hi,</P>
<P>Just to add specs says Call Waiting tone should be a 440 Hz tone applied for 300 +- 50 ms, talking path should be interrupted for a maximum of 400ms for the application of CW tone. If the controlling party does not flash or disconnect after FIRST burst of CW tone, a second burst should be applied 10 +- 1 seconds later (can go upto 30 ms in overload situation).&nbsp; The&nbsp;behaviour could be&nbsp;different&nbsp;due to&nbsp;interactions with other services that a subscriber has subscribed to. Applying&nbsp;ringing continously will&nbsp;disturb the conversation going on.</P>
<P>Regards,</P>
<P>Umesh</P>
<P><BR><BR>&nbsp;</P><BR><BR><BR>
<DIV><FONT face="Verdana, Geneva, Arial, Sans-serif" color=#ff6633><EM><STRONG></STRONG></EM></FONT>&nbsp;</DIV>&gt;From: "Kevin Boyle" <KBOYLE@NORTELNETWORKS.COM>&gt;To: Dal Chohan <D.CHOHAN@FTEL.CO.UK>, Raphael Tryster <RAPHAEL@TDSOFT.COM>, megaco@ietf.org &gt;Subject: RE: [Megaco] H.248.23 Enhanced Alerting Package. &gt;Date: Thu, 5 Feb 2004 07:27:37 -0500 &gt; &gt;So, you would rather need two messages to play the tone once and one message &gt;to play the tone twice? That is incredibly non-intuitive. &gt; &gt;Call wait generally has a very long interval between occurrences, and is &gt;generally limited to two occurrences. Ringing, on the other hand, does not &gt;have a long interval (as compared to the length of the audible signal) and &gt;is always applied indefinitely. Further, the two examples I gave are just &gt;that -- examples. If you read the call waiting specifications, certain &gt;feature interactions require only a single application of the call wait tone &gt;a!
 s well. These all lead to the conclusion that I stated earlier: Call wait &gt;is a discrete signal applied multiple times. &gt; &gt;Kevin &gt; &gt; &gt; _____ &gt; &gt;From: Dal Chohan [mailto:D.Chohan@ftel.co.uk] &gt;Sent: Thursday, February 05, 2004 4:18 AM &gt;To: Raphael Tryster; megaco@ietf.org &gt;Subject: Re: [Megaco] H.248.23 Enhanced Alerting Package. &gt; &gt; &gt;Raphael &gt; &gt;Thanks for the response - but I don't see why the Call Waiting can't be &gt;repeatedly applied just like ringing. If the Callee flashes, then the &gt;detection of the event will stop the signal as per standard H.248 behaviour &gt;and if the waiting party hangs up, then the MGC will instruct the MG to stop &gt;applying the signal via a new signal descriptor. &gt; &gt;Dal Chohan. &gt; &gt;----- Original Message ----- &gt;From: Raphael <mailto:raphael@tdsoft.com>Tryster &gt;To: 'Dal Chohan' <mailto:D.Chohan@ftel.co.uk>; megaco@ietf.org &gt;<mailto:megaco@ietf.org> &gt;Sent: Wednesday, Febru!
 ary 04, 2004 4:26 PM &gt;Subject: RE: [Megaco] H.248.23 Enhanced Alert
ing Package. &gt; &gt; &gt;Kevin Boyle answered this question recently: &gt; &gt; &gt;Call wait patterns are generally replayed after a short amount of time (10 &gt;seconds in North America). Note that this is not a repetition -- this is &gt;actually a second distinct application of the signal. There are several &gt;feature scenarios where the second signal will not be applied -- if the &gt;waiting party hangs up, or if the callee flashes, to name a couple. &gt; &gt; &gt;As for the dt package, I believe the characterization of call wait tone as &gt;timeout is erroneous, although previous attempts to fix it have been &gt;rejected. I wrote the alerting package to be local-variant unaware, leaving &gt;it to the MG to be responsible for how the signals should be applied to its &gt;terminations. Note that most localities have more than one wait tone &gt;pattern, to allow for assignable distinctive tones (similar to assigning &gt;distinctive ringing patterns to different incoming !
 callers). &gt; &gt; &gt;I see no reason to use dt/cw if using alert/cw. The alerting package &gt;provides far more functionality than the dt package for both ringing and &gt;call waiting. &gt; &gt; &gt;Kevin &gt; &gt; &gt; _____ &gt; &gt; &gt; &gt; From: Raphael Tryster <mailto:[mailto:raphael@tdsoft.com]>&gt;[mailto:raphael@tdsoft.com] &gt;Sent: Thursday, January 08, 2004 5:39 AM &gt;To: Boyle, Kevin [NCRTP:3Z40:EXCH]; <mailto:megaco@ietf.org>&gt;megaco@ietf.org &gt;Subject: call waiting signal type &gt; &gt; &gt; &gt; In draft_boyle_megaco_alerting_03.txt, the alert/cw signal has type &gt;brief, whereas the standard signal dt/cw apparently has type timeout. Is &gt;this a matter of national protocol? The description of alert/cw says "Call &gt;wait patterns do not repeat". In Israel, a call waiting signal consists of &gt;3 short tones, repeated once a few seconds later. &gt; &gt; If it is a matter of national protocol, does this mean that a &gt;particular installation will !
 use either alert/cw or dt/cw, but not both? &gt; &gt; Raphael Tryster 
&gt; &gt; &gt; BM__MailData-----Original Message----- &gt;From: Dal Chohan [SMTP:D.Chohan@ftel.co.uk] &gt;Sent: Wednesday, 4 February 2004 18:12 &gt;To: megaco@ietf.org &gt;Subject: [Megaco] H.248.23 Enhanced Alerting Package. &gt; &gt; &gt;The description of the "Call Waiting" signal defined in H.248.23 specifies &gt;that call waiting patterns do not repeat - Is this correct? &gt; &gt; &gt;I would have thought that for a Call Waiting service that it would would &gt;make perfect sense for the "call waiting" pattern to be repeatedly applied &gt;by the MG until it was told to stop the call waiting signal by the MGC (c.f. &gt;ringing) . It is the MGC that determines the interval within which the &gt;waiting call should be accepted and thus determines the overall duration of &gt;the call waiting pattern. &gt; &gt; &gt; &gt; &gt;Dal Chohan &gt; &gt; &gt; &gt;_______________________________________________ &gt;Megaco mailing list &gt;Megaco@ietf.org &gt;https://www1.ietf.org/mailm!
 an/listinfo/megaco </mailto:megaco@ietf.org></mailto:[mailto:raphael@tdsoft.com]></mailto:megaco@ietf.org></mailto:D.Chohan@ftel.co.uk></mailto:raphael@tdsoft.com></div><br clear=all><hr>Easiest Money Transfer to India. Send Money To 6000 Indian Towns. <a href="http://g.msn.com/8HMBENIN/2743??PS=">Easiest Way To Send Money Home! </a> </html>

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<html><div style='background-color:'><P>Hi,</P>
<P>Just to add specs says Call Waiting tone should be a 440 Hz tone applied for 300 +- 50 ms, talking path should be interrupted for a maximum of 400ms for the application of CW tone. If the controlling party does not flash or disconnect after FIRST burst of CW tone, a second burst should be applied 10 +- 1 seconds later (can go upto 30 ms in overload situation).&nbsp; The&nbsp;behaviour could be&nbsp;different&nbsp;due to&nbsp;interactions with other services that a subscriber has subscribed to. Applying&nbsp;ringing continously will&nbsp;disturb the conversation going on.</P>
<P>Regards,</P>
<P>Umesh</P>
<P><BR><BR>&nbsp;</P><BR><BR><BR>
<DIV><FONT face="Verdana, Geneva, Arial, Sans-serif" color=#ff6633><EM><STRONG></STRONG></EM></FONT>&nbsp;</DIV>&gt;From: "Kevin Boyle" <KBOYLE@NORTELNETWORKS.COM>&gt;To: Dal Chohan <D.CHOHAN@FTEL.CO.UK>, Raphael Tryster <RAPHAEL@TDSOFT.COM>, megaco@ietf.org &gt;Subject: RE: [Megaco] H.248.23 Enhanced Alerting Package. &gt;Date: Thu, 5 Feb 2004 07:27:37 -0500 &gt; &gt;So, you would rather need two messages to play the tone once and one message &gt;to play the tone twice? That is incredibly non-intuitive. &gt; &gt;Call wait generally has a very long interval between occurrences, and is &gt;generally limited to two occurrences. Ringing, on the other hand, does not &gt;have a long interval (as compared to the length of the audible signal) and &gt;is always applied indefinitely. Further, the two examples I gave are just &gt;that -- examples. If you read the call waiting specifications, certain &gt;feature interactions require only a single application of the call wait tone &gt;a!
 s well. These all lead to the conclusion that I stated earlier: Call wait &gt;is a discrete signal applied multiple times. &gt; &gt;Kevin &gt; &gt; &gt; _____ &gt; &gt;From: Dal Chohan [mailto:D.Chohan@ftel.co.uk] &gt;Sent: Thursday, February 05, 2004 4:18 AM &gt;To: Raphael Tryster; megaco@ietf.org &gt;Subject: Re: [Megaco] H.248.23 Enhanced Alerting Package. &gt; &gt; &gt;Raphael &gt; &gt;Thanks for the response - but I don't see why the Call Waiting can't be &gt;repeatedly applied just like ringing. If the Callee flashes, then the &gt;detection of the event will stop the signal as per standard H.248 behaviour &gt;and if the waiting party hangs up, then the MGC will instruct the MG to stop &gt;applying the signal via a new signal descriptor. &gt; &gt;Dal Chohan. &gt; &gt;----- Original Message ----- &gt;From: Raphael <mailto:raphael@tdsoft.com>Tryster &gt;To: 'Dal Chohan' <mailto:D.Chohan@ftel.co.uk>; megaco@ietf.org &gt;<mailto:megaco@ietf.org> &gt;Sent: Wednesday, Febru!
 ary 04, 2004 4:26 PM &gt;Subject: RE: [Megaco] H.248.23 Enhanced Alert
ing Package. &gt; &gt; &gt;Kevin Boyle answered this question recently: &gt; &gt; &gt;Call wait patterns are generally replayed after a short amount of time (10 &gt;seconds in North America). Note that this is not a repetition -- this is &gt;actually a second distinct application of the signal. There are several &gt;feature scenarios where the second signal will not be applied -- if the &gt;waiting party hangs up, or if the callee flashes, to name a couple. &gt; &gt; &gt;As for the dt package, I believe the characterization of call wait tone as &gt;timeout is erroneous, although previous attempts to fix it have been &gt;rejected. I wrote the alerting package to be local-variant unaware, leaving &gt;it to the MG to be responsible for how the signals should be applied to its &gt;terminations. Note that most localities have more than one wait tone &gt;pattern, to allow for assignable distinctive tones (similar to assigning &gt;distinctive ringing patterns to different incoming !
 callers). &gt; &gt; &gt;I see no reason to use dt/cw if using alert/cw. The alerting package &gt;provides far more functionality than the dt package for both ringing and &gt;call waiting. &gt; &gt; &gt;Kevin &gt; &gt; &gt; _____ &gt; &gt; &gt; &gt; From: Raphael Tryster <mailto:[mailto:raphael@tdsoft.com]>&gt;[mailto:raphael@tdsoft.com] &gt;Sent: Thursday, January 08, 2004 5:39 AM &gt;To: Boyle, Kevin [NCRTP:3Z40:EXCH]; <mailto:megaco@ietf.org>&gt;megaco@ietf.org &gt;Subject: call waiting signal type &gt; &gt; &gt; &gt; In draft_boyle_megaco_alerting_03.txt, the alert/cw signal has type &gt;brief, whereas the standard signal dt/cw apparently has type timeout. Is &gt;this a matter of national protocol? The description of alert/cw says "Call &gt;wait patterns do not repeat". In Israel, a call waiting signal consists of &gt;3 short tones, repeated once a few seconds later. &gt; &gt; If it is a matter of national protocol, does this mean that a &gt;particular installation will !
 use either alert/cw or dt/cw, but not both? &gt; &gt; Raphael Tryster 
&gt; &gt; &gt; BM__MailData-----Original Message----- &gt;From: Dal Chohan [SMTP:D.Chohan@ftel.co.uk] &gt;Sent: Wednesday, 4 February 2004 18:12 &gt;To: megaco@ietf.org &gt;Subject: [Megaco] H.248.23 Enhanced Alerting Package. &gt; &gt; &gt;The description of the "Call Waiting" signal defined in H.248.23 specifies &gt;that call waiting patterns do not repeat - Is this correct? &gt; &gt; &gt;I would have thought that for a Call Waiting service that it would would &gt;make perfect sense for the "call waiting" pattern to be repeatedly applied &gt;by the MG until it was told to stop the call waiting signal by the MGC (c.f. &gt;ringing) . It is the MGC that determines the interval within which the &gt;waiting call should be accepted and thus determines the overall duration of &gt;the call waiting pattern. &gt; &gt; &gt; &gt; &gt;Dal Chohan &gt; &gt; &gt; &gt;_______________________________________________ &gt;Megaco mailing list &gt;Megaco@ietf.org &gt;https://www1.ietf.org/mailm!
 an/listinfo/megaco </mailto:megaco@ietf.org></mailto:[mailto:raphael@tdsoft.com]></mailto:megaco@ietf.org></mailto:D.Chohan@ftel.co.uk></mailto:raphael@tdsoft.com></div><br clear=all><hr>Easiest Money Transfer to India. Send Money To 6000 Indian Towns. <a href="http://g.msn.com/8HMBENIN/2743??PS=">Easiest Way To Send Money Home! </a> </html>

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From: "Kevin Boyle" <kboyle@nortelnetworks.com>
To: Dal Chohan <D.Chohan@ftel.co.uk>, Raphael Tryster <raphael@tdsoft.com>,
        megaco@ietf.org
Subject: RE: [Megaco] H.248.23 Enhanced Alerting Package.
Date: Thu, 5 Feb 2004 12:23:59 -0500 
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If the MGC wants to apply the tone repeatedly, it is certainly within the
prerogative of the MGC to override the signal type and duration.  I am
interested to know which specification defines the feature you talk about,
since I went out of my way to consider the function of these features in
many localities when I designed the packages.
 
It seems to me that things are a little more complicated than just playing
the sound repeatedly.  Applying a signal on an active speech path requires
the MG to cut the speech path to ensure that only the party to whom the tone
applies hears it.  This would imply that the speech path would be cut for
the entire duration of the signal.  This would be somewhat detrimental to
the ongoing speech on the call if the duration of the tone is "infinite".
 
I stand by what the package says.
 
Kevin


  _____  

From: Dal Chohan [mailto:D.Chohan@ftel.co.uk] 
Sent: Thursday, February 05, 2004 8:59 AM
To: Boyle, Kevin [NCRTP:3Z40:EXCH]; Raphael Tryster; megaco@ietf.org
Subject: Re: [Megaco] H.248.23 Enhanced Alerting Package.


Sorry, but I think you have missed the point that I am making - H.248.23
states that Call Wait patterns do not repeat and to me this means that you
cannot apply the Call Waiting tone repeatedly and I see no reason for such a
restriction.
 
I can think of an implementation of Call Waiting for example in the UK where
it would be advantageous for the Call Waiting tone to be repeatedly applied
by the MG, rather than defining the distinct number of cycles of Call
Waiting that should be applied at the MG as determined by the pattern
parameter. This approach minimises the configuration in the MG and lets the
MGC determine the number of cycles of Call Waiting that should be applied,
which it does know anyway since it is running an overall timer within which
the waiting call should be accepted.
 
Some additional comments in-line.
 
 
Dal Chohan.
 
 
 
----- Original Message ----- 

From: Kevin Boyle <mailto:kboyle@nortelnetworks.com>  
To: Dal Chohan <mailto:D.Chohan@ftel.co.uk>  ; Raphael
<mailto:raphael@tdsoft.com> Tryster ; megaco@ietf.org
<mailto:megaco@ietf.org>  
Sent: Thursday, February 05, 2004 12:27 PM
Subject: RE: [Megaco] H.248.23 Enhanced Alerting Package.


So, you would rather need two messages to play the tone once and one message
to play the tone twice?  That is incredibly non-intuitive.
 
[DC] I didn't say that - Isn't that the purpose of the pattern parameter to
define the duration of the Call Waiting tone, so for example pattern 1 could
mean apply the Call Waiting tone indefinitely and pattern 2 could mean apply
one pulse of Call Waiting tone.
 
 
Call wait generally has a very long interval between occurrences, and is
generally limited to two occurrences.  
 
[DC] The two ocurrences may true for the US market, but this isn't the case
for the UK.
 
Ringing, on the other hand, does not have a long interval (as compared to
the length of the audible signal) and is always applied indefinitely.
Further, the two examples I gave are just that -- examples.  If you read the
call waiting specifications, certain feature interactions require only a
single application of the call wait tone as well.  These all lead to the
conclusion that I stated earlier: Call wait is a discrete signal applied
multiple times.
 
[DC] I have no problem with treating the signal as a pulsed signal that is
applied multiple times, but the current text states that "multiple" cannnot
be of an infinite value and I think the UK Call Waiting service operation
could benefit from this latter mode of working.
 
Kevin


  _____  

From: Dal Chohan [mailto:D.Chohan@ftel.co.uk] 
Sent: Thursday, February 05, 2004 4:18 AM
To: Raphael Tryster; megaco@ietf.org
Subject: Re: [Megaco] H.248.23 Enhanced Alerting Package.


Raphael 
 
Thanks for the response -  but I don't see why the Call Waiting can't be
repeatedly applied just like ringing. If the Callee flashes, then the
detection of the event will stop the signal as per standard H.248 behaviour
and if the waiting party hangs up, then the MGC will instruct the MG to stop
applying the signal via a new signal descriptor.
 
Dal Chohan.

----- Original Message ----- 
From: Raphael  <mailto:raphael@tdsoft.com> Tryster 
To: 'Dal Chohan' <mailto:D.Chohan@ftel.co.uk>  ; megaco@ietf.org
<mailto:megaco@ietf.org>  
Sent: Wednesday, February 04, 2004 4:26 PM
Subject: RE: [Megaco] H.248.23 Enhanced Alerting Package.


Kevin Boyle answered this question recently: 


Call wait patterns are generally replayed after a short amount of time (10
seconds in North America).  Note that this is not a repetition -- this is
actually a second distinct application of the signal.  There are several
feature scenarios where the second signal will not be applied -- if the
waiting party hangs up, or if the callee flashes, to name a couple.


As for the dt package, I believe the characterization of call wait tone as
timeout is erroneous, although previous attempts to fix it have been
rejected.  I wrote the alerting package to be local-variant unaware, leaving
it to the MG to be responsible for how the signals should be applied to its
terminations.  Note that most localities have more than one wait tone
pattern, to allow for assignable distinctive tones (similar to assigning
distinctive ringing patterns to different incoming callers).


I see no reason to use dt/cw if using alert/cw.  The alerting package
provides far more functionality than the dt package for both ringing and
call waiting.


Kevin 


  _____  



	From: Raphael Tryster  <mailto:[mailto:raphael@tdsoft.com]>
[mailto:raphael@tdsoft.com]
Sent: Thursday, January 08, 2004 5:39 AM
To: Boyle, Kevin [NCRTP:3Z40:EXCH];  <mailto:megaco@ietf.org>
megaco@ietf.org
Subject: call waiting signal type



	In draft_boyle_megaco_alerting_03.txt, the alert/cw signal has type
brief, whereas the standard signal dt/cw apparently has type timeout.  Is
this a matter of national protocol?  The description of alert/cw says "Call
wait patterns do not repeat".  In Israel, a call waiting signal consists of
3 short tones, repeated once a few seconds later.

	If it is a matter of national protocol, does this mean that a
particular installation will use either alert/cw or dt/cw, but not both?

	Raphael Tryster 


	BM__MailData-----Original Message----- 
From:   Dal Chohan [SMTP:D.Chohan@ftel.co.uk] 
Sent:   Wednesday, 4 February 2004 18:12 
To:     megaco@ietf.org 
Subject:        [Megaco] H.248.23 Enhanced Alerting Package. 

	
The description of the "Call Waiting" signal defined in H.248.23 specifies
that call waiting patterns do not repeat - Is this correct?

	
I would have thought that for a Call Waiting service that it would would
make perfect sense for the "call waiting" pattern to be repeatedly applied
by the MG until it was told to stop the call waiting signal by the MGC (c.f.
ringing) . It is the MGC that determines the interval within which the
waiting call should be accepted and thus determines the overall duration of
the call waiting pattern.

	
  
  
Dal Chohan



_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco


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From: "Kevin Boyle" <kboyle@nortelnetworks.com>
To: Dal Chohan <D.Chohan@ftel.co.uk>, Raphael Tryster <raphael@tdsoft.com>,
        megaco@ietf.org
Subject: RE: [Megaco] H.248.23 Enhanced Alerting Package.
Date: Thu, 5 Feb 2004 12:23:59 -0500 
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If the MGC wants to apply the tone repeatedly, it is certainly within the
prerogative of the MGC to override the signal type and duration.  I am
interested to know which specification defines the feature you talk about,
since I went out of my way to consider the function of these features in
many localities when I designed the packages.
 
It seems to me that things are a little more complicated than just playing
the sound repeatedly.  Applying a signal on an active speech path requires
the MG to cut the speech path to ensure that only the party to whom the tone
applies hears it.  This would imply that the speech path would be cut for
the entire duration of the signal.  This would be somewhat detrimental to
the ongoing speech on the call if the duration of the tone is "infinite".
 
I stand by what the package says.
 
Kevin


  _____  

From: Dal Chohan [mailto:D.Chohan@ftel.co.uk] 
Sent: Thursday, February 05, 2004 8:59 AM
To: Boyle, Kevin [NCRTP:3Z40:EXCH]; Raphael Tryster; megaco@ietf.org
Subject: Re: [Megaco] H.248.23 Enhanced Alerting Package.


Sorry, but I think you have missed the point that I am making - H.248.23
states that Call Wait patterns do not repeat and to me this means that you
cannot apply the Call Waiting tone repeatedly and I see no reason for such a
restriction.
 
I can think of an implementation of Call Waiting for example in the UK where
it would be advantageous for the Call Waiting tone to be repeatedly applied
by the MG, rather than defining the distinct number of cycles of Call
Waiting that should be applied at the MG as determined by the pattern
parameter. This approach minimises the configuration in the MG and lets the
MGC determine the number of cycles of Call Waiting that should be applied,
which it does know anyway since it is running an overall timer within which
the waiting call should be accepted.
 
Some additional comments in-line.
 
 
Dal Chohan.
 
 
 
----- Original Message ----- 

From: Kevin Boyle <mailto:kboyle@nortelnetworks.com>  
To: Dal Chohan <mailto:D.Chohan@ftel.co.uk>  ; Raphael
<mailto:raphael@tdsoft.com> Tryster ; megaco@ietf.org
<mailto:megaco@ietf.org>  
Sent: Thursday, February 05, 2004 12:27 PM
Subject: RE: [Megaco] H.248.23 Enhanced Alerting Package.


So, you would rather need two messages to play the tone once and one message
to play the tone twice?  That is incredibly non-intuitive.
 
[DC] I didn't say that - Isn't that the purpose of the pattern parameter to
define the duration of the Call Waiting tone, so for example pattern 1 could
mean apply the Call Waiting tone indefinitely and pattern 2 could mean apply
one pulse of Call Waiting tone.
 
 
Call wait generally has a very long interval between occurrences, and is
generally limited to two occurrences.  
 
[DC] The two ocurrences may true for the US market, but this isn't the case
for the UK.
 
Ringing, on the other hand, does not have a long interval (as compared to
the length of the audible signal) and is always applied indefinitely.
Further, the two examples I gave are just that -- examples.  If you read the
call waiting specifications, certain feature interactions require only a
single application of the call wait tone as well.  These all lead to the
conclusion that I stated earlier: Call wait is a discrete signal applied
multiple times.
 
[DC] I have no problem with treating the signal as a pulsed signal that is
applied multiple times, but the current text states that "multiple" cannnot
be of an infinite value and I think the UK Call Waiting service operation
could benefit from this latter mode of working.
 
Kevin


  _____  

From: Dal Chohan [mailto:D.Chohan@ftel.co.uk] 
Sent: Thursday, February 05, 2004 4:18 AM
To: Raphael Tryster; megaco@ietf.org
Subject: Re: [Megaco] H.248.23 Enhanced Alerting Package.


Raphael 
 
Thanks for the response -  but I don't see why the Call Waiting can't be
repeatedly applied just like ringing. If the Callee flashes, then the
detection of the event will stop the signal as per standard H.248 behaviour
and if the waiting party hangs up, then the MGC will instruct the MG to stop
applying the signal via a new signal descriptor.
 
Dal Chohan.

----- Original Message ----- 
From: Raphael  <mailto:raphael@tdsoft.com> Tryster 
To: 'Dal Chohan' <mailto:D.Chohan@ftel.co.uk>  ; megaco@ietf.org
<mailto:megaco@ietf.org>  
Sent: Wednesday, February 04, 2004 4:26 PM
Subject: RE: [Megaco] H.248.23 Enhanced Alerting Package.


Kevin Boyle answered this question recently: 


Call wait patterns are generally replayed after a short amount of time (10
seconds in North America).  Note that this is not a repetition -- this is
actually a second distinct application of the signal.  There are several
feature scenarios where the second signal will not be applied -- if the
waiting party hangs up, or if the callee flashes, to name a couple.


As for the dt package, I believe the characterization of call wait tone as
timeout is erroneous, although previous attempts to fix it have been
rejected.  I wrote the alerting package to be local-variant unaware, leaving
it to the MG to be responsible for how the signals should be applied to its
terminations.  Note that most localities have more than one wait tone
pattern, to allow for assignable distinctive tones (similar to assigning
distinctive ringing patterns to different incoming callers).


I see no reason to use dt/cw if using alert/cw.  The alerting package
provides far more functionality than the dt package for both ringing and
call waiting.


Kevin 


  _____  



	From: Raphael Tryster  <mailto:[mailto:raphael@tdsoft.com]>
[mailto:raphael@tdsoft.com]
Sent: Thursday, January 08, 2004 5:39 AM
To: Boyle, Kevin [NCRTP:3Z40:EXCH];  <mailto:megaco@ietf.org>
megaco@ietf.org
Subject: call waiting signal type



	In draft_boyle_megaco_alerting_03.txt, the alert/cw signal has type
brief, whereas the standard signal dt/cw apparently has type timeout.  Is
this a matter of national protocol?  The description of alert/cw says "Call
wait patterns do not repeat".  In Israel, a call waiting signal consists of
3 short tones, repeated once a few seconds later.

	If it is a matter of national protocol, does this mean that a
particular installation will use either alert/cw or dt/cw, but not both?

	Raphael Tryster 


	BM__MailData-----Original Message----- 
From:   Dal Chohan [SMTP:D.Chohan@ftel.co.uk] 
Sent:   Wednesday, 4 February 2004 18:12 
To:     megaco@ietf.org 
Subject:        [Megaco] H.248.23 Enhanced Alerting Package. 

	
The description of the "Call Waiting" signal defined in H.248.23 specifies
that call waiting patterns do not repeat - Is this correct?

	
I would have thought that for a Call Waiting service that it would would
make perfect sense for the "call waiting" pattern to be repeatedly applied
by the MG until it was told to stop the call waiting signal by the MGC (c.f.
ringing) . It is the MGC that determines the interval within which the
waiting call should be accepted and thus determines the overall duration of
the call waiting pattern.

	
  
  
Dal Chohan



_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco



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Hello Nurit,

These do not need to be unique because when you reference a signal the=20
formulation is PackageID/ToneID. The packageID means that the toneid is u=
nique.=20
You cannot use the Original (extended packageID) to reference the tones i=
n the=20
new package. Or have I missed something in your question?

Regards, Christian

Nurit Shenhar wrote:

> Hi Christian
>=20
> =20
>=20
> Can you forward this mail for me to the list? (Or answer it yourself)?=20
> Somehow my mails don=92t get to the list. I sent a mail to Tom Taylor, =
but=20
> got no response.
>=20
> =20
>=20
> =20
>=20
> The tone IDs in the MF generation package H.248.24 are defined as 0x005=
0=20
> and up. In the Q.1950 package Basic Service Tones Generation (=91srvtn=92=
)=20
> and the following packages, the signals start from 0x004f. That results=
=20
> in non-unique numbers. As both packages inherit from the basic tones=20
> generation package =91tonegen=92, I think they should be unique.
>=20
> =20
>=20
> Thanks,
>=20
> =20
>=20
> =20
>=20
> Nurit Shenhar
>=20
> H.248/MEGACO Architect
>=20
> =20
>=20
> E-Mail: nurit.shenhar@audiocodes.com
>=20
> Fax.    +972-3-5394223
>=20
> www.audiocodes.com <http://www.audiocodes.com/>
>=20
> =20
>=20


This communication is confidential and intended solely for the addressee(=
s). Any unauthorized review, use, disclosure or distribution is prohibite=
d. If you believe this message has been sent to you in error, please noti=
fy the sender by replying to this transmission and delete the message wit=
hout disclosing it. Thank you.

E-mail including attachments is susceptible to data corruption, interrupt=
ion, unauthorized amendment, tampering and viruses, and we only send and =
receive e-mails on the basis that we are not liable for any such corrupti=
on, interception, amendment, tampering or viruses or any consequences the=
reof.


_______________________________________________
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Subject: [Megaco] Re: Contradiction in signal ID between H.248.24 and Q.1950
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Hello Nurit,

These do not need to be unique because when you reference a signal the=20
formulation is PackageID/ToneID. The packageID means that the toneid is u=
nique.=20
You cannot use the Original (extended packageID) to reference the tones i=
n the=20
new package. Or have I missed something in your question?

Regards, Christian

Nurit Shenhar wrote:

> Hi Christian
>=20
> =20
>=20
> Can you forward this mail for me to the list? (Or answer it yourself)?=20
> Somehow my mails don=92t get to the list. I sent a mail to Tom Taylor, =
but=20
> got no response.
>=20
> =20
>=20
> =20
>=20
> The tone IDs in the MF generation package H.248.24 are defined as 0x005=
0=20
> and up. In the Q.1950 package Basic Service Tones Generation (=91srvtn=92=
)=20
> and the following packages, the signals start from 0x004f. That results=
=20
> in non-unique numbers. As both packages inherit from the basic tones=20
> generation package =91tonegen=92, I think they should be unique.
>=20
> =20
>=20
> Thanks,
>=20
> =20
>=20
> =20
>=20
> Nurit Shenhar
>=20
> H.248/MEGACO Architect
>=20
> =20
>=20
> E-Mail: nurit.shenhar@audiocodes.com
>=20
> Fax.    +972-3-5394223
>=20
> www.audiocodes.com <http://www.audiocodes.com/>
>=20
> =20
>=20


This communication is confidential and intended solely for the addressee(=
s). Any unauthorized review, use, disclosure or distribution is prohibite=
d. If you believe this message has been sent to you in error, please noti=
fy the sender by replying to this transmission and delete the message wit=
hout disclosing it. Thank you.

E-mail including attachments is susceptible to data corruption, interrupt=
ion, unauthorized amendment, tampering and viruses, and we only send and =
receive e-mails on the basis that we are not liable for any such corrupti=
on, interception, amendment, tampering or viruses or any consequences the=
reof.


_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco



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To: Dal Chohan <D.Chohan@ftel.co.uk>
CC: megaco@ietf.org
Subject: Re: [Megaco] Events Descriptor with KeepActive set and an  Emebdded
 Signals Descriptor
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Hello Dal,

I believe there may be some confusion over which KeepActive is being referred to 
by the text. Both the EventDescriptor and the signal descriptor can have the 
keep active flag. This text talks about the EventDescriptor keepactive flag. The 
reason the text was added was that in the case of an embedded signals descriptor 
it doesn't make sense to have a keep active flag in the EventDescriptor because 
  the embedded signals descriptor will become active at the detection of event 
and any existing signals would be subject to the keep active flags in this 
embedded descriptor. So I believe your scenarios are handled.

Regards, Christian

Dal Chohan wrote:

> H.248v2 clause 7.1.9 states that ; "A media gateway controller shall not 
> send EventsDescriptors with an event both marked KeepActive and 
> containing an embedded SignalsDescriptor"
> 
> I think that this is unnecessarily too restrictive and unduly reduces 
> the flexibility of H.248. The judicious use of the KA flag within the 
> Embedded Signal descriptor itself can keep the Signal currently being 
> applied active.
> 
> The following scenario describes a practical situation where the above 
> rule is violate. Take the case where "Automatic Metering" is applied to 
> an analogue line and automatic meter pulses are being generated  by the 
> MG. Now the MG is monitoring for "On-Hook" and the KA (KeepActive) flag 
> is sent against the "On-Hook" event. Upon detection of  "On-Hook" the 
> event is reported to the MGC by the MG and the automatic metering still 
> continues.
> 
> Now the MGC sends a command requesting that the MG monitor for 
> "Off-Hook" with the KA flag set, plus an Embedded 
> signals/event descriptor indicating that "dial tone" should be played. 
> In addition the KA flag is set for the "enable metering" signal to 
> ensure that the automatic metering continues when the dial tone signal 
> is applied , and the digit map descriptor is also enabled. Now this 
> sequence clearly violates the rule stated above.
> 
> I would therefore recommend that the sentence above is deleted from the 
> specification unless someone can think off a good reason for keeping it, 
> because it is unnecessarily too restrictive and reduces the flexibility 
> of the H.248 protocol.
> 
>  
> 
>  
> Regards.
>  
>  
> Dal Chohan


This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you.

E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof.


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To: Jean-Luc.Lecuyer@alcatel.fr
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Hello Jean-Luc,

If you use and Audit the Event Buffer Descriptor you will get the current events 
active. Otherwise you will have to reset the event using the "strict" parameter.
However I would first address an implementation that loses messages...

Regards, Christian

Jean-Luc.Lecuyer@alcatel.fr wrote:

> High all
> 
> Initial state : the MG is programmed to send a notify if a transition
> on-hook / off-hook or vice versa happens.
> Nevertheless the  MGC can miss a transition state from on-hook / off-hook
> or vice versa (lost of H248 dialog with the MG)
> 
> I am looking for a way to know the state of a analog line (on-hook /
> off-hook). I expected to use the AuditValue on the termination to know it
> but unfortunately the AuditValue does not give this information.
> 
> In my understanding the only way to retrieve this information is to send a
> modify command on the termination to reprogam the detection of event al/on
> and al/of.
> 
> What do you think about that ?
> Thank-you for your help.
> 
> Regards
> Jean-Luc Lecuyer
> 
> 
> 
> 
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Hello Jean-Luc,

If you use and Audit the Event Buffer Descriptor you will get the current events 
active. Otherwise you will have to reset the event using the "strict" parameter.
However I would first address an implementation that loses messages...

Regards, Christian

Jean-Luc.Lecuyer@alcatel.fr wrote:

> High all
> 
> Initial state : the MG is programmed to send a notify if a transition
> on-hook / off-hook or vice versa happens.
> Nevertheless the  MGC can miss a transition state from on-hook / off-hook
> or vice versa (lost of H248 dialog with the MG)
> 
> I am looking for a way to know the state of a analog line (on-hook /
> off-hook). I expected to use the AuditValue on the termination to know it
> but unfortunately the AuditValue does not give this information.
> 
> In my understanding the only way to retrieve this information is to send a
> modify command on the termination to reprogam the detection of event al/on
> and al/of.
> 
> What do you think about that ?
> Thank-you for your help.
> 
> Regards
> Jean-Luc Lecuyer
> 
> 
> 
> 
> _______________________________________________
> Megaco mailing list
> Megaco@ietf.org
> https://www1.ietf.org/mailman/listinfo/megaco
> 


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To: Dal Chohan <D.Chohan@ftel.co.uk>
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Subject: Re: [Megaco] Events Descriptor with KeepActive set and an  Emebdded
 Signals Descriptor
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Hello Dal,

I believe there may be some confusion over which KeepActive is being referred to 
by the text. Both the EventDescriptor and the signal descriptor can have the 
keep active flag. This text talks about the EventDescriptor keepactive flag. The 
reason the text was added was that in the case of an embedded signals descriptor 
it doesn't make sense to have a keep active flag in the EventDescriptor because 
  the embedded signals descriptor will become active at the detection of event 
and any existing signals would be subject to the keep active flags in this 
embedded descriptor. So I believe your scenarios are handled.

Regards, Christian

Dal Chohan wrote:

> H.248v2 clause 7.1.9 states that ; "A media gateway controller shall not 
> send EventsDescriptors with an event both marked KeepActive and 
> containing an embedded SignalsDescriptor"
> 
> I think that this is unnecessarily too restrictive and unduly reduces 
> the flexibility of H.248. The judicious use of the KA flag within the 
> Embedded Signal descriptor itself can keep the Signal currently being 
> applied active.
> 
> The following scenario describes a practical situation where the above 
> rule is violate. Take the case where "Automatic Metering" is applied to 
> an analogue line and automatic meter pulses are being generated  by the 
> MG. Now the MG is monitoring for "On-Hook" and the KA (KeepActive) flag 
> is sent against the "On-Hook" event. Upon detection of  "On-Hook" the 
> event is reported to the MGC by the MG and the automatic metering still 
> continues.
> 
> Now the MGC sends a command requesting that the MG monitor for 
> "Off-Hook" with the KA flag set, plus an Embedded 
> signals/event descriptor indicating that "dial tone" should be played. 
> In addition the KA flag is set for the "enable metering" signal to 
> ensure that the automatic metering continues when the dial tone signal 
> is applied , and the digit map descriptor is also enabled. Now this 
> sequence clearly violates the rule stated above.
> 
> I would therefore recommend that the sentence above is deleted from the 
> specification unless someone can think off a good reason for keeping it, 
> because it is unnecessarily too restrictive and reduces the flexibility 
> of the H.248 protocol.
> 
>  
> 
>  
> Regards.
>  
>  
> Dal Chohan


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Subject: [Megaco] Results of ITU-T SG16
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Hello All,

In my capacity as ITU-T Q.3 Rapporteur i'd like to inform you of the output of 
the January SG16 meeting.

The Q.3 meeting report can be found contained in the Working Party 2 report at:
http://avguest@ftp3.itu.int/av-arch/avc-site/0401_Gen/Output_docs/WP2_report_040130.zip 


The various editor's output drafts for:
H.248 Subseries Implementors' Guide
H.248.1 Version 1 Implementors' Guide
H.248.1 Version 2 Corrigendum 1
H.248.3 Corrigendum 1
H.248.4 Corrigendum 1
H.248.7 Corrigendum 1
H.248.8 Amendment 1
H.248.16 Corrigendum 1
H.248.17 Corrigendum 1
New H.248.19: MCU Composition Package
New H.248.21: Semi-permanent Connection Package
H.248.23 Corrigendum 1
H.248.25 Corrigendum 1
H.248.26 Corrigendum 1
New H.248.28: ICAS
New H.248.30: RTCPXR
New H.248.31: Adaptive Jitter Buffer (AJB)
H Series Supplement 2: Packages Guide Release 5

can be found at:
http://avguest@ftp3.itu.int/av-arch/avc-site/0401_Gen/Output_docs/

The documents are currently being uploaded so please check again if the document 
is not on the site. The Password for the sites is: Avguest

***Please note: Many of these documents are subject to a Last Call process which 
may result in changes. They are also subject to a publishing process so they may 
also be editorially changed. Use with this in mind.

I was also decided by the meeting that the H.248.1 Version 1 Implementors Guide 
will only be maintained until the time H.248.1v3 is approved (Late 
2004->Mid-2005). No work will occur documenting errors in v1. v2 
errors/clarifications will be document. This was to encourage people to move to 
v2 and v3.

Regards, Christian


This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you.

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Date: Fri, 06 Feb 2004 09:21:57 +1100
X-Sybari-Trust: 4b7bdd7a 6b512624 6c3547e6 00000138
From: Christian Groves <Christian.Groves@ericsson.com>
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Subject: [Megaco] Results of ITU-T SG16
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Hello All,

In my capacity as ITU-T Q.3 Rapporteur i'd like to inform you of the output of 
the January SG16 meeting.

The Q.3 meeting report can be found contained in the Working Party 2 report at:
http://avguest@ftp3.itu.int/av-arch/avc-site/0401_Gen/Output_docs/WP2_report_040130.zip 


The various editor's output drafts for:
H.248 Subseries Implementors' Guide
H.248.1 Version 1 Implementors' Guide
H.248.1 Version 2 Corrigendum 1
H.248.3 Corrigendum 1
H.248.4 Corrigendum 1
H.248.7 Corrigendum 1
H.248.8 Amendment 1
H.248.16 Corrigendum 1
H.248.17 Corrigendum 1
New H.248.19: MCU Composition Package
New H.248.21: Semi-permanent Connection Package
H.248.23 Corrigendum 1
H.248.25 Corrigendum 1
H.248.26 Corrigendum 1
New H.248.28: ICAS
New H.248.30: RTCPXR
New H.248.31: Adaptive Jitter Buffer (AJB)
H Series Supplement 2: Packages Guide Release 5

can be found at:
http://avguest@ftp3.itu.int/av-arch/avc-site/0401_Gen/Output_docs/

The documents are currently being uploaded so please check again if the document 
is not on the site. The Password for the sites is: Avguest

***Please note: Many of these documents are subject to a Last Call process which 
may result in changes. They are also subject to a publishing process so they may 
also be editorially changed. Use with this in mind.

I was also decided by the meeting that the H.248.1 Version 1 Implementors Guide 
will only be maintained until the time H.248.1v3 is approved (Late 
2004->Mid-2005). No work will occur documenting errors in v1. v2 
errors/clarifications will be document. This was to encourage people to move to 
v2 and v3.

Regards, Christian


This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you.

E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof.


_______________________________________________
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https://www1.ietf.org/mailman/listinfo/megaco



From megaco-admin@ietf.org  Fri Feb  6 11:54:29 2004
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Date: Fri, 06 Feb 2004 11:47:32 -0500
To: <sampathk@cisco.com>, megaco@ietf.org
From: Aleksandr Ryabin <kengr@motorola.com>
Subject: RE: [Megaco] Query Related to Automatic Metering
Cc: "'Tom Taylor'"<taylor@nortelnetworks.com>,
        "'Kevin Boyle'"<kboyle@nortelnetworks.com>
In-Reply-To: <000801c3ec91$941f5400$210110ac@SAMPATHKW2K03>
References: <3FE72151.8050301@nortelnetworks.com>
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Sampath,

metd already adheres to that way as described in its
"KeepActive and EventbufferControl Procedures."

Regards,
         Aleks

>From: "Sampath Komanduri"<sampathk@cisco.com>
>To: "'Tom Taylor'"<taylor@nortelnetworks.com>,
>    "'Kevin Boyle'"<kboyle@nortelnetworks.com>,
>    "'Aleksandr Ryabin'"<kengr@motorola.com>
>Subject: RE: [Megaco] Query Related to Automatic Metering
>Date: Fri, 6 Feb 2004 01:14:07 -0800
>
>Hi Kevin/Aleks,
>Is my understanding correct that we are going to change the AMET and METD
>package procedures to reflect the issue raised by gsachin and agreed by Tom?
>Pls. let me know.
>Thanks,
>Sampath
>
>-----Original Message-----
>From: megaco-admin@ietf.org [mailto:megaco-admin@ietf.org] On Behalf Of Tom
>Taylor
>Sent: Monday, December 22, 2003 8:53 AM
>Cc: megaco@ietf.org
>Subject: Re: [Megaco] Query Related to Automatic Metering
>
>
>I think you make a good point.  It's desirable to keep the protocol
>intact, rather than define exceptions within individual packages.
>
>gsachin wrote:
>
> >
> >
> >
> > Hi List,
> >
> >
> > this is a query regarding Periodic report event 'pr' defined in AMET
> > package .the package procedure says that
> >
> > "the detection of event pr shall not cause the termination of the
> > signal em or signal mbp, even if the KeppActive(KA) flag is not set
> > for the pr event"
> >
> > what i feel is that the detection of the 'pr' event shall not cause
> > the termination of any of the signals.
> >
> > pls tell me if this is a correct assumption?
> >
> > if yes, then i think here the package procedures should have mandated
> > the use of KA flag with this event. Doing this will keep the protocol
> > rules intact.
> >
> >
> >
> > Regards
> > Sachin Gupta


_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco


From exim@www1.ietf.org  Fri Feb  6 11:56:18 2004
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Date: Fri, 06 Feb 2004 11:47:32 -0500
To: <sampathk@cisco.com>, megaco@ietf.org
From: Aleksandr Ryabin <kengr@motorola.com>
Subject: RE: [Megaco] Query Related to Automatic Metering
Cc: "'Tom Taylor'"<taylor@nortelnetworks.com>,
        "'Kevin Boyle'"<kboyle@nortelnetworks.com>
In-Reply-To: <000801c3ec91$941f5400$210110ac@SAMPATHKW2K03>
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Sampath,

metd already adheres to that way as described in its
"KeepActive and EventbufferControl Procedures."

Regards,
         Aleks

>From: "Sampath Komanduri"<sampathk@cisco.com>
>To: "'Tom Taylor'"<taylor@nortelnetworks.com>,
>    "'Kevin Boyle'"<kboyle@nortelnetworks.com>,
>    "'Aleksandr Ryabin'"<kengr@motorola.com>
>Subject: RE: [Megaco] Query Related to Automatic Metering
>Date: Fri, 6 Feb 2004 01:14:07 -0800
>
>Hi Kevin/Aleks,
>Is my understanding correct that we are going to change the AMET and METD
>package procedures to reflect the issue raised by gsachin and agreed by Tom?
>Pls. let me know.
>Thanks,
>Sampath
>
>-----Original Message-----
>From: megaco-admin@ietf.org [mailto:megaco-admin@ietf.org] On Behalf Of Tom
>Taylor
>Sent: Monday, December 22, 2003 8:53 AM
>Cc: megaco@ietf.org
>Subject: Re: [Megaco] Query Related to Automatic Metering
>
>
>I think you make a good point.  It's desirable to keep the protocol
>intact, rather than define exceptions within individual packages.
>
>gsachin wrote:
>
> >
> >
> >
> > Hi List,
> >
> >
> > this is a query regarding Periodic report event 'pr' defined in AMET
> > package .the package procedure says that
> >
> > "the detection of event pr shall not cause the termination of the
> > signal em or signal mbp, even if the KeppActive(KA) flag is not set
> > for the pr event"
> >
> > what i feel is that the detection of the 'pr' event shall not cause
> > the termination of any of the signals.
> >
> > pls tell me if this is a correct assumption?
> >
> > if yes, then i think here the package procedures should have mandated
> > the use of KA flag with this event. Doing this will keep the protocol
> > rules intact.
> >
> >
> >
> > Regards
> > Sachin Gupta


_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco



From megaco-admin@ietf.org  Sat Feb  7 19:55:33 2004
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From: "Sachin Gupta" <sachgupt@cisco.com>
To: "Aleksandr Ryabin" <kengr@motorola.com>, <sampathk@cisco.com>,
        <megaco@ietf.org>
Cc: "'Tom Taylor'" <taylor@nortelnetworks.com>,
        "'Kevin Boyle'" <kboyle@nortelnetworks.com>
Subject: RE: [Megaco] Query Related to Automatic Metering
Date: Fri, 6 Feb 2004 18:06:41 -0800
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Aleks,
The "KeepActive and EventbufferControl Procedures." in the metd package does
not mandate the use of KeepActive(KA) flag.

In case MGC comes with "metering pulse detection" event without KA Flag then
what should be MGs behaviour?

A) Should it do the normal processing (i.e stop all signals), as mentioned
in the base protocol, when this event is detected?
B) Should it report an error for the command request?
C) Should it do the processing as if KA flag is there, even though call
agent has not specified it?

Do we have any scenarios where detection of this event may require stopping
of currently applied signals? If not, then shouldn't the use of KA be
mandated?


Pls clarify.

Thanks
Sachin gupta

-----Original Message-----
From: megaco-admin@ietf.org [mailto:megaco-admin@ietf.org]On Behalf Of
Aleksandr Ryabin
Sent: Friday, February 06, 2004 8:48 AM
To: sampathk@cisco.com; megaco@ietf.org
Cc: 'Tom Taylor'; 'Kevin Boyle'
Subject: RE: [Megaco] Query Related to Automatic Metering


Sampath,

metd already adheres to that way as described in its
"KeepActive and EventbufferControl Procedures."

Regards,
         Aleks

>From: "Sampath Komanduri"<sampathk@cisco.com>
>To: "'Tom Taylor'"<taylor@nortelnetworks.com>,
>    "'Kevin Boyle'"<kboyle@nortelnetworks.com>,
>    "'Aleksandr Ryabin'"<kengr@motorola.com>
>Subject: RE: [Megaco] Query Related to Automatic Metering
>Date: Fri, 6 Feb 2004 01:14:07 -0800
>
>Hi Kevin/Aleks,
>Is my understanding correct that we are going to change the AMET and METD
>package procedures to reflect the issue raised by gsachin and agreed by
Tom?
>Pls. let me know.
>Thanks,
>Sampath
>
>-----Original Message-----
>From: megaco-admin@ietf.org [mailto:megaco-admin@ietf.org] On Behalf Of Tom
>Taylor
>Sent: Monday, December 22, 2003 8:53 AM
>Cc: megaco@ietf.org
>Subject: Re: [Megaco] Query Related to Automatic Metering
>
>
>I think you make a good point.  It's desirable to keep the protocol
>intact, rather than define exceptions within individual packages.
>
>gsachin wrote:
>
> >
> >
> >
> > Hi List,
> >
> >
> > this is a query regarding Periodic report event 'pr' defined in AMET
> > package .the package procedure says that
> >
> > "the detection of event pr shall not cause the termination of the
> > signal em or signal mbp, even if the KeppActive(KA) flag is not set
> > for the pr event"
> >
> > what i feel is that the detection of the 'pr' event shall not cause
> > the termination of any of the signals.
> >
> > pls tell me if this is a correct assumption?
> >
> > if yes, then i think here the package procedures should have mandated
> > the use of KA flag with this event. Doing this will keep the protocol
> > rules intact.
> >
> >
> >
> > Regards
> > Sachin Gupta


_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco


_______________________________________________
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From: "Sachin Gupta" <sachgupt@cisco.com>
To: "Aleksandr Ryabin" <kengr@motorola.com>, <sampathk@cisco.com>,
        <megaco@ietf.org>
Cc: "'Tom Taylor'" <taylor@nortelnetworks.com>,
        "'Kevin Boyle'" <kboyle@nortelnetworks.com>
Subject: RE: [Megaco] Query Related to Automatic Metering
Date: Fri, 6 Feb 2004 18:06:41 -0800
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Aleks,
The "KeepActive and EventbufferControl Procedures." in the metd package does
not mandate the use of KeepActive(KA) flag.

In case MGC comes with "metering pulse detection" event without KA Flag then
what should be MGs behaviour?

A) Should it do the normal processing (i.e stop all signals), as mentioned
in the base protocol, when this event is detected?
B) Should it report an error for the command request?
C) Should it do the processing as if KA flag is there, even though call
agent has not specified it?

Do we have any scenarios where detection of this event may require stopping
of currently applied signals? If not, then shouldn't the use of KA be
mandated?


Pls clarify.

Thanks
Sachin gupta

-----Original Message-----
From: megaco-admin@ietf.org [mailto:megaco-admin@ietf.org]On Behalf Of
Aleksandr Ryabin
Sent: Friday, February 06, 2004 8:48 AM
To: sampathk@cisco.com; megaco@ietf.org
Cc: 'Tom Taylor'; 'Kevin Boyle'
Subject: RE: [Megaco] Query Related to Automatic Metering


Sampath,

metd already adheres to that way as described in its
"KeepActive and EventbufferControl Procedures."

Regards,
         Aleks

>From: "Sampath Komanduri"<sampathk@cisco.com>
>To: "'Tom Taylor'"<taylor@nortelnetworks.com>,
>    "'Kevin Boyle'"<kboyle@nortelnetworks.com>,
>    "'Aleksandr Ryabin'"<kengr@motorola.com>
>Subject: RE: [Megaco] Query Related to Automatic Metering
>Date: Fri, 6 Feb 2004 01:14:07 -0800
>
>Hi Kevin/Aleks,
>Is my understanding correct that we are going to change the AMET and METD
>package procedures to reflect the issue raised by gsachin and agreed by
Tom?
>Pls. let me know.
>Thanks,
>Sampath
>
>-----Original Message-----
>From: megaco-admin@ietf.org [mailto:megaco-admin@ietf.org] On Behalf Of Tom
>Taylor
>Sent: Monday, December 22, 2003 8:53 AM
>Cc: megaco@ietf.org
>Subject: Re: [Megaco] Query Related to Automatic Metering
>
>
>I think you make a good point.  It's desirable to keep the protocol
>intact, rather than define exceptions within individual packages.
>
>gsachin wrote:
>
> >
> >
> >
> > Hi List,
> >
> >
> > this is a query regarding Periodic report event 'pr' defined in AMET
> > package .the package procedure says that
> >
> > "the detection of event pr shall not cause the termination of the
> > signal em or signal mbp, even if the KeppActive(KA) flag is not set
> > for the pr event"
> >
> > what i feel is that the detection of the 'pr' event shall not cause
> > the termination of any of the signals.
> >
> > pls tell me if this is a correct assumption?
> >
> > if yes, then i think here the package procedures should have mandated
> > the use of KA flag with this event. Doing this will keep the protocol
> > rules intact.
> >
> >
> >
> > Regards
> > Sachin Gupta


_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco


_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco



From megaco-admin@ietf.org  Sun Feb  8 05:37:30 2004
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Thread-Topic: Contradiction in signal ID between H.248.24 and Q.1950
Thread-Index: AcPsLc3ltkZ1Lq//SICYUry1ikS6DAB/+yfQ
From: "Nurit Shenhar" <NuritS@audiocodes.com>
To: "Christian Groves" <Christian.Groves@ericsson.com>
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Subject: [Megaco] RE: Contradiction in signal ID between H.248.24 and Q.1950
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Hi Christian

What about the tonegen/pt signal? I thought up to now that you may
specify a list of tones in the format:

Tonegen/pt{tl=3D{cg, d0, d1, roh}}

And so mix some tones in a single signal. Is it not the case? If this
format is allowed, than I have a problem with the overlapping when using
the ASN.1 format.

Nurit

-----Original Message-----
From: Christian Groves [mailto:Christian.Groves@ericsson.com]=20
Sent: Thursday, February 05, 2004 11:20 PM
To: Nurit Shenhar
Cc: megaco@ietf.org
Subject: Re: Contradiction in signal ID between H.248.24 and Q.1950

Hello Nurit,

These do not need to be unique because when you reference a signal the=20
formulation is PackageID/ToneID. The packageID means that the toneid is
unique.=20
You cannot use the Original (extended packageID) to reference the tones
in the=20
new package. Or have I missed something in your question?

Regards, Christian

Nurit Shenhar wrote:

> Hi Christian
>=20
> =20
>=20
> Can you forward this mail for me to the list? (Or answer it yourself)?

> Somehow my mails don't get to the list. I sent a mail to Tom Taylor,
but=20
> got no response.
>=20
> =20
>=20
> =20
>=20
> The tone IDs in the MF generation package H.248.24 are defined as
0x0050=20
> and up. In the Q.1950 package Basic Service Tones Generation ('srvtn')

> and the following packages, the signals start from 0x004f. That
results=20
> in non-unique numbers. As both packages inherit from the basic tones=20
> generation package 'tonegen', I think they should be unique.
>=20
> =20
>=20
> Thanks,
>=20
> =20
>=20
> =20
>=20
> Nurit Shenhar
>=20
> H.248/MEGACO Architect
>=20
> =20
>=20
> E-Mail: nurit.shenhar@audiocodes.com
>=20
> Fax.    +972-3-5394223
>=20
> www.audiocodes.com <http://www.audiocodes.com/>
>=20
> =20
>=20


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Thread-Topic: Contradiction in signal ID between H.248.24 and Q.1950
Thread-Index: AcPsLc3ltkZ1Lq//SICYUry1ikS6DAB/+yfQ
From: "Nurit Shenhar" <NuritS@audiocodes.com>
To: "Christian Groves" <Christian.Groves@ericsson.com>
Cc: <megaco@ietf.org>
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Subject: [Megaco] RE: Contradiction in signal ID between H.248.24 and Q.1950
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Hi Christian

What about the tonegen/pt signal? I thought up to now that you may
specify a list of tones in the format:

Tonegen/pt{tl=3D{cg, d0, d1, roh}}

And so mix some tones in a single signal. Is it not the case? If this
format is allowed, than I have a problem with the overlapping when using
the ASN.1 format.

Nurit

-----Original Message-----
From: Christian Groves [mailto:Christian.Groves@ericsson.com]=20
Sent: Thursday, February 05, 2004 11:20 PM
To: Nurit Shenhar
Cc: megaco@ietf.org
Subject: Re: Contradiction in signal ID between H.248.24 and Q.1950

Hello Nurit,

These do not need to be unique because when you reference a signal the=20
formulation is PackageID/ToneID. The packageID means that the toneid is
unique.=20
You cannot use the Original (extended packageID) to reference the tones
in the=20
new package. Or have I missed something in your question?

Regards, Christian

Nurit Shenhar wrote:

> Hi Christian
>=20
> =20
>=20
> Can you forward this mail for me to the list? (Or answer it yourself)?

> Somehow my mails don't get to the list. I sent a mail to Tom Taylor,
but=20
> got no response.
>=20
> =20
>=20
> =20
>=20
> The tone IDs in the MF generation package H.248.24 are defined as
0x0050=20
> and up. In the Q.1950 package Basic Service Tones Generation ('srvtn')

> and the following packages, the signals start from 0x004f. That
results=20
> in non-unique numbers. As both packages inherit from the basic tones=20
> generation package 'tonegen', I think they should be unique.
>=20
> =20
>=20
> Thanks,
>=20
> =20
>=20
> =20
>=20
> Nurit Shenhar
>=20
> H.248/MEGACO Architect
>=20
> =20
>=20
> E-Mail: nurit.shenhar@audiocodes.com
>=20
> Fax.    +972-3-5394223
>=20
> www.audiocodes.com <http://www.audiocodes.com/>
>=20
> =20
>=20


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Hello Nurit,

You can't use the old package name to reference the signals in a new package. 
However you can use the new package name to refer to the new and old signals.

Regards, Christian

Nurit Shenhar wrote:
> Hi Christian
> 
> What about the tonegen/pt signal? I thought up to now that you may
> specify a list of tones in the format:
> 
> Tonegen/pt{tl={cg, d0, d1, roh}}
> 
> And so mix some tones in a single signal. Is it not the case? If this
> format is allowed, than I have a problem with the overlapping when using
> the ASN.1 format.
> 
> Nurit
> 
> -----Original Message-----
> From: Christian Groves [mailto:Christian.Groves@ericsson.com] 
> Sent: Thursday, February 05, 2004 11:20 PM
> To: Nurit Shenhar
> Cc: megaco@ietf.org
> Subject: Re: Contradiction in signal ID between H.248.24 and Q.1950
> 
> Hello Nurit,
> 
> These do not need to be unique because when you reference a signal the 
> formulation is PackageID/ToneID. The packageID means that the toneid is
> unique. 
> You cannot use the Original (extended packageID) to reference the tones
> in the 
> new package. Or have I missed something in your question?
> 
> Regards, Christian
> 
> Nurit Shenhar wrote:
> 
> 
>>Hi Christian
>>
>> 
>>
>>Can you forward this mail for me to the list? (Or answer it yourself)?
> 
> 
>>Somehow my mails don't get to the list. I sent a mail to Tom Taylor,
> 
> but 
> 
>>got no response.
>>
>> 
>>
>> 
>>
>>The tone IDs in the MF generation package H.248.24 are defined as
> 
> 0x0050 
> 
>>and up. In the Q.1950 package Basic Service Tones Generation ('srvtn')
> 
> 
>>and the following packages, the signals start from 0x004f. That
> 
> results 
> 
>>in non-unique numbers. As both packages inherit from the basic tones 
>>generation package 'tonegen', I think they should be unique.
>>
>> 
>>
>>Thanks,
>>
>> 
>>
>> 
>>
>>Nurit Shenhar
>>
>>H.248/MEGACO Architect
>>
>> 
>>
>>E-Mail: nurit.shenhar@audiocodes.com
>>
>>Fax.    +972-3-5394223
>>
>>www.audiocodes.com <http://www.audiocodes.com/>
>>
>> 
>>
> 
> 
> 
> This communication is confidential and intended solely for the
> addressee(s). Any unauthorized review, use, disclosure or distribution
> is prohibited. If you believe this message has been sent to you in
> error, please notify the sender by replying to this transmission and
> delete the message without disclosing it. Thank you.
> 
> E-mail including attachments is susceptible to data corruption,
> interruption, unauthorized amendment, tampering and viruses, and we only
> send and receive e-mails on the basis that we are not liable for any
> such corruption, interception, amendment, tampering or viruses or any
> consequences thereof.
> 


This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you.

E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof.


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Hello Nurit,

You can't use the old package name to reference the signals in a new package. 
However you can use the new package name to refer to the new and old signals.

Regards, Christian

Nurit Shenhar wrote:
> Hi Christian
> 
> What about the tonegen/pt signal? I thought up to now that you may
> specify a list of tones in the format:
> 
> Tonegen/pt{tl={cg, d0, d1, roh}}
> 
> And so mix some tones in a single signal. Is it not the case? If this
> format is allowed, than I have a problem with the overlapping when using
> the ASN.1 format.
> 
> Nurit
> 
> -----Original Message-----
> From: Christian Groves [mailto:Christian.Groves@ericsson.com] 
> Sent: Thursday, February 05, 2004 11:20 PM
> To: Nurit Shenhar
> Cc: megaco@ietf.org
> Subject: Re: Contradiction in signal ID between H.248.24 and Q.1950
> 
> Hello Nurit,
> 
> These do not need to be unique because when you reference a signal the 
> formulation is PackageID/ToneID. The packageID means that the toneid is
> unique. 
> You cannot use the Original (extended packageID) to reference the tones
> in the 
> new package. Or have I missed something in your question?
> 
> Regards, Christian
> 
> Nurit Shenhar wrote:
> 
> 
>>Hi Christian
>>
>> 
>>
>>Can you forward this mail for me to the list? (Or answer it yourself)?
> 
> 
>>Somehow my mails don't get to the list. I sent a mail to Tom Taylor,
> 
> but 
> 
>>got no response.
>>
>> 
>>
>> 
>>
>>The tone IDs in the MF generation package H.248.24 are defined as
> 
> 0x0050 
> 
>>and up. In the Q.1950 package Basic Service Tones Generation ('srvtn')
> 
> 
>>and the following packages, the signals start from 0x004f. That
> 
> results 
> 
>>in non-unique numbers. As both packages inherit from the basic tones 
>>generation package 'tonegen', I think they should be unique.
>>
>> 
>>
>>Thanks,
>>
>> 
>>
>> 
>>
>>Nurit Shenhar
>>
>>H.248/MEGACO Architect
>>
>> 
>>
>>E-Mail: nurit.shenhar@audiocodes.com
>>
>>Fax.    +972-3-5394223
>>
>>www.audiocodes.com <http://www.audiocodes.com/>
>>
>> 
>>
> 
> 
> 
> This communication is confidential and intended solely for the
> addressee(s). Any unauthorized review, use, disclosure or distribution
> is prohibited. If you believe this message has been sent to you in
> error, please notify the sender by replying to this transmission and
> delete the message without disclosing it. Thank you.
> 
> E-mail including attachments is susceptible to data corruption,
> interruption, unauthorized amendment, tampering and viruses, and we only
> send and receive e-mails on the basis that we are not liable for any
> such corruption, interception, amendment, tampering or viruses or any
> consequences thereof.
> 


This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you.

E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof.


_______________________________________________
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https://www1.ietf.org/mailman/listinfo/megaco



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Date: Mon, 09 Feb 2004 09:39:43 -0500
To: "Sachin Gupta"<sachgupt@cisco.com>, <megaco@ietf.org>
From: Aleksandr Ryabin <kengr@motorola.com>
Subject: RE: [Megaco] Query Related to Automatic Metering
In-Reply-To: <FCEBJLKCJFBAMDLFNJCDEEEGCBAA.sachgupt@cisco.com>
References: <5.2.1.1.0.20040206113839.01e04830@IL06EXM13.corp.mot.com>
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Sachin Gupta,

A)

The package definition should not really care ether there are such cases, 
or not.
It is up to MGC to control and direct MG on how exactly MGC wants MG to behave.
That is if it wants it for whatever reason terminate all signals on 
detection of the
event then it will not provide KA.

Regards,
         Aleks

At 09:06 PM 2/6/2004, Sachin Gupta wrote:

>Aleks,
>The "KeepActive and EventbufferControl Procedures." in the metd package does
>not mandate the use of KeepActive(KA) flag.
>
>In case MGC comes with "metering pulse detection" event without KA Flag then
>what should be MGs behaviour?
>
>A) Should it do the normal processing (i.e stop all signals), as mentioned
>in the base protocol, when this event is detected?
>B) Should it report an error for the command request?
>C) Should it do the processing as if KA flag is there, even though call
>agent has not specified it?
>
>Do we have any scenarios where detection of this event may require stopping
>of currently applied signals? If not, then shouldn't the use of KA be
>mandated?
>
>
>Pls clarify.
>
>Thanks
>Sachin gupta
>
>-----Original Message-----
>From: megaco-admin@ietf.org [mailto:megaco-admin@ietf.org]On Behalf Of
>Aleksandr Ryabin
>Sent: Friday, February 06, 2004 8:48 AM
>To: sampathk@cisco.com; megaco@ietf.org
>Cc: 'Tom Taylor'; 'Kevin Boyle'
>Subject: RE: [Megaco] Query Related to Automatic Metering
>
>
>Sampath,
>
>metd already adheres to that way as described in its
>"KeepActive and EventbufferControl Procedures."
>
>Regards,
>          Aleks
>
> >From: "Sampath Komanduri"<sampathk@cisco.com>
> >To: "'Tom Taylor'"<taylor@nortelnetworks.com>,
> >    "'Kevin Boyle'"<kboyle@nortelnetworks.com>,
> >    "'Aleksandr Ryabin'"<kengr@motorola.com>
> >Subject: RE: [Megaco] Query Related to Automatic Metering
> >Date: Fri, 6 Feb 2004 01:14:07 -0800
> >
> >Hi Kevin/Aleks,
> >Is my understanding correct that we are going to change the AMET and METD
> >package procedures to reflect the issue raised by gsachin and agreed by
>Tom?
> >Pls. let me know.
> >Thanks,
> >Sampath
> >
> >-----Original Message-----
> >From: megaco-admin@ietf.org [mailto:megaco-admin@ietf.org] On Behalf Of Tom
> >Taylor
> >Sent: Monday, December 22, 2003 8:53 AM
> >Cc: megaco@ietf.org
> >Subject: Re: [Megaco] Query Related to Automatic Metering
> >
> >
> >I think you make a good point.  It's desirable to keep the protocol
> >intact, rather than define exceptions within individual packages.
> >
> >gsachin wrote:
> >
> > >
> > >
> > >
> > > Hi List,
> > >
> > >
> > > this is a query regarding Periodic report event 'pr' defined in AMET
> > > package .the package procedure says that
> > >
> > > "the detection of event pr shall not cause the termination of the
> > > signal em or signal mbp, even if the KeppActive(KA) flag is not set
> > > for the pr event"
> > >
> > > what i feel is that the detection of the 'pr' event shall not cause
> > > the termination of any of the signals.
> > >
> > > pls tell me if this is a correct assumption?
> > >
> > > if yes, then i think here the package procedures should have mandated
> > > the use of KA flag with this event. Doing this will keep the protocol
> > > rules intact.
> > >
> > >
> > >
> > > Regards
> > > Sachin Gupta
>
>
>_______________________________________________
>Megaco mailing list
>Megaco@ietf.org
>https://www1.ietf.org/mailman/listinfo/megaco
>
>
>_______________________________________________
>Megaco mailing list
>Megaco@ietf.org
>https://www1.ietf.org/mailman/listinfo/megaco


_______________________________________________
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To: "Sachin Gupta"<sachgupt@cisco.com>, <megaco@ietf.org>
From: Aleksandr Ryabin <kengr@motorola.com>
Subject: RE: [Megaco] Query Related to Automatic Metering
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Sachin Gupta,

A)

The package definition should not really care ether there are such cases, 
or not.
It is up to MGC to control and direct MG on how exactly MGC wants MG to behave.
That is if it wants it for whatever reason terminate all signals on 
detection of the
event then it will not provide KA.

Regards,
         Aleks

At 09:06 PM 2/6/2004, Sachin Gupta wrote:

>Aleks,
>The "KeepActive and EventbufferControl Procedures." in the metd package does
>not mandate the use of KeepActive(KA) flag.
>
>In case MGC comes with "metering pulse detection" event without KA Flag then
>what should be MGs behaviour?
>
>A) Should it do the normal processing (i.e stop all signals), as mentioned
>in the base protocol, when this event is detected?
>B) Should it report an error for the command request?
>C) Should it do the processing as if KA flag is there, even though call
>agent has not specified it?
>
>Do we have any scenarios where detection of this event may require stopping
>of currently applied signals? If not, then shouldn't the use of KA be
>mandated?
>
>
>Pls clarify.
>
>Thanks
>Sachin gupta
>
>-----Original Message-----
>From: megaco-admin@ietf.org [mailto:megaco-admin@ietf.org]On Behalf Of
>Aleksandr Ryabin
>Sent: Friday, February 06, 2004 8:48 AM
>To: sampathk@cisco.com; megaco@ietf.org
>Cc: 'Tom Taylor'; 'Kevin Boyle'
>Subject: RE: [Megaco] Query Related to Automatic Metering
>
>
>Sampath,
>
>metd already adheres to that way as described in its
>"KeepActive and EventbufferControl Procedures."
>
>Regards,
>          Aleks
>
> >From: "Sampath Komanduri"<sampathk@cisco.com>
> >To: "'Tom Taylor'"<taylor@nortelnetworks.com>,
> >    "'Kevin Boyle'"<kboyle@nortelnetworks.com>,
> >    "'Aleksandr Ryabin'"<kengr@motorola.com>
> >Subject: RE: [Megaco] Query Related to Automatic Metering
> >Date: Fri, 6 Feb 2004 01:14:07 -0800
> >
> >Hi Kevin/Aleks,
> >Is my understanding correct that we are going to change the AMET and METD
> >package procedures to reflect the issue raised by gsachin and agreed by
>Tom?
> >Pls. let me know.
> >Thanks,
> >Sampath
> >
> >-----Original Message-----
> >From: megaco-admin@ietf.org [mailto:megaco-admin@ietf.org] On Behalf Of Tom
> >Taylor
> >Sent: Monday, December 22, 2003 8:53 AM
> >Cc: megaco@ietf.org
> >Subject: Re: [Megaco] Query Related to Automatic Metering
> >
> >
> >I think you make a good point.  It's desirable to keep the protocol
> >intact, rather than define exceptions within individual packages.
> >
> >gsachin wrote:
> >
> > >
> > >
> > >
> > > Hi List,
> > >
> > >
> > > this is a query regarding Periodic report event 'pr' defined in AMET
> > > package .the package procedure says that
> > >
> > > "the detection of event pr shall not cause the termination of the
> > > signal em or signal mbp, even if the KeppActive(KA) flag is not set
> > > for the pr event"
> > >
> > > what i feel is that the detection of the 'pr' event shall not cause
> > > the termination of any of the signals.
> > >
> > > pls tell me if this is a correct assumption?
> > >
> > > if yes, then i think here the package procedures should have mandated
> > > the use of KA flag with this event. Doing this will keep the protocol
> > > rules intact.
> > >
> > >
> > >
> > > Regards
> > > Sachin Gupta
>
>
>_______________________________________________
>Megaco mailing list
>Megaco@ietf.org
>https://www1.ietf.org/mailman/listinfo/megaco
>
>
>_______________________________________________
>Megaco mailing list
>Megaco@ietf.org
>https://www1.ietf.org/mailman/listinfo/megaco


_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco



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<P>=0AHi All,<BR>=0A&nbsp; I have a query about BER encoding of serviceChan=
geReason Parameter. As per rfc 3525 , this string is first BER-encoded as a=
n IA5String.<BR>=0AThe result of this BER-encoding is then encoded as an AS=
N.1 OCTET STRING type.<BR>=0A&nbsp; This is the encoded buffer for this Par=
ameter.<BR>=0A&nbsp; 04 0F 16 0D 39 30 31 20&nbsp; 43 6F 6C 64 20 42 6F 6F =
74 <BR>=0A&nbsp; First I encoded it as IA5 string (16 0D 39 30 31 20&nbsp; =
43 6F 6C 64 20 42 6F 6F 74) and then the result I encoded it as OctetString=
.<BR>=0A&nbsp; When I tried to decode with Hammer Call Anaylzer its not dec=
oding&nbsp; serviceChangeReason properly.<BR>=0A<BR>=0AHere Is the capture =
this packet.<BR>=0A<BR>=0A---- UDP ----<BR>=0A&nbsp;  ---- UDP header ----<=
BR>=0A&nbsp; &nbsp; &nbsp; 0B-81 =3D B81h [2945d] source port<BR>=0A&nbsp; =
&nbsp; &nbsp; 0B-81 =3D B81h [2945d] destination port<BR>=0A&nbsp; &nbsp; &=
nbsp; 00-7D =3D 7Dh [125d] length: octets include header (not less than 8)<=
BR>=0A&nbsp; &nbsp; &nbsp; E4-9B =3D E49Bh [58523d] checksum: checksum is c=
orrect<BR>=0A&nbsp;  ---- UDP datagram ----<BR>=0A---- H.248 ----<BR>=0A&nb=
sp;  {1010 0000}=3D A0h [160d]&nbsp; tag: 0x00 [000]<BR>=0A&nbsp;  ---- Mes=
sage ----<BR>=0A&nbsp; &nbsp; &nbsp; ---- version ----<BR>=0A&nbsp; &nbsp; =
&nbsp; &nbsp;  {0000 0001}=3D 01h [001d] version<BR>=0A&nbsp; &nbsp; &nbsp;=
 ---- MId ----<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp;  ---- IP4Address ----<BR>=
=0A&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ---- address ----<BR>=0A&nbsp;=
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  address: 192.168.5.8<BR>=0A&nbs=
p; &nbsp; &nbsp; ---- Transactions ----<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp;  =
---- TransactionRequest ----<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp=
; ---- TransactionID ----<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &=
nbsp;  {0110 0101}=3D 65h [101d] transactionID<BR>=0A&nbsp; &nbsp; &nbsp; &=
nbsp; &nbsp; &nbsp; ---- actions ----<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp; &nb=
sp; &nbsp; &nbsp;  ---- ActionRequest ----<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp=
; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ---- ContextID ----<BR>=0A&nbsp; &nbsp=
; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  {0000 0000}=3D 0=
0h [000d] contextID<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; ---- commandsRequest ----<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp; &=
nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  ---- CommandRequest ----<BR>=0A&n=
bsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; ---- Command ----<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &n=
bsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  ---- serviceChangeRequest -=
---<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &n=
bsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ---- TerminationIDList ----<BR>=0A&=
nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;=
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  ---- TerminationID ----<BR>=0A&nbsp; &=
nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;=
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ---- wildcard ----<BR>=0A&nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp=
; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  ---- WildcardField ----=
<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp=
; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  ---- Wild=
cardField ----<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp=
; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nb=
sp; &nbsp; &nbsp; wildcardField: FF-FF-FF-FF-FF-FF-FF-FF- 00<BR>=0A&nbsp; &=
nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;=
 &nbsp; &nbsp; &nbsp; ---- ServiceChangeParm ----<BR>=0A&nbsp; &nbsp; &nbsp=
; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nb=
sp; &nbsp; &nbsp;  ---- ServiceChangeMethod ----<BR>=0A&nbsp; &nbsp; &nbsp;=
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbs=
p; &nbsp; &nbsp; &nbsp; &nbsp; {0000 0011}=3D 03h [003d] ServiceChangeMetho=
drestart<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbs=
p; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  ---- ServiceChangeVers=
ion ----<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbs=
p; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {0000 000=
1}=3D 01h [001d] ServiceChangeVersion<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp; &nb=
sp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &=
nbsp;  ---- Value ----<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbs=
p; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &n=
bsp; value: 16-0D-39-30-31-20-43-6F- 6C-64-20-42-6F-6F-74<BR>=0A<BR>=0A&nbs=
p; Is it correct ? <BR>=0A&nbsp; Can any one help me in this.<BR>=0A<BR>=0A=
Thanks,<BR>=0AKumar<BR>=0A <BR>=0A<BR>=0A=0A</P>=0A<br><br>=0A<A target=3D"=
_blank" HREF=3D"http://clients.rediff.com/signature/track_sig.asp"><IMG SRC=
=3D"http://ads.rediff.com/RealMedia/ads/adstream_nx.cgi/www.rediffmail.com/=
inbox.htm@Bottom" BORDER=3D0 VSPACE=3D0 HSPACE=3D0 HEIGHT=3D74 WIDTH=3D496>=
</a>=0A
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Hi All,=0A  I have a query about BER encoding of serviceChangeReason Parame=
ter. As per rfc 3525 , this string is first BER-encoded as an IA5String.=0A=
The result of this BER-encoding is then encoded as an ASN.1 OCTET STRING ty=
pe.=0A  This is the encoded buffer for this Parameter.=0A  04 0F 16 0D 39 3=
0 31 20  43 6F 6C 64 20 42 6F 6F 74 =0A  First I encoded it as IA5 string (=
16 0D 39 30 31 20  43 6F 6C 64 20 42 6F 6F 74) and then the result I encode=
d it as OctetString.=0A  When I tried to decode with Hammer Call Anaylzer i=
ts not decoding  serviceChangeReason properly.=0A=0AHere Is the capture thi=
s packet.=0A=0A---- UDP ----=0A   ---- UDP header ----=0A      0B-81 =3D B8=
1h [2945d] source port=0A      0B-81 =3D B81h [2945d] destination port=0A  =
    00-7D =3D 7Dh [125d] length: octets include header (not less than 8)=0A=
      E4-9B =3D E49Bh [58523d] checksum: checksum is correct=0A   ---- UDP =
datagram ----=0A---- H.248 ----=0A   {1010 0000}=3D A0h [160d]  tag: 0x00 [=
000]=0A   ---- Message ----=0A      ---- version ----=0A         {0000 0001=
}=3D 01h [001d] version=0A      ---- MId ----=0A         ---- IP4Address --=
--=0A            ---- address ----=0A               address: 192.168.5.8=0A=
      ---- Transactions ----=0A         ---- TransactionRequest ----=0A    =
        ---- TransactionID ----=0A               {0110 0101}=3D 65h [101d] =
transactionID=0A            ---- actions ----=0A               ---- ActionR=
equest ----=0A                  ---- ContextID ----=0A                     =
{0000 0000}=3D 00h [000d] contextID=0A                  ---- commandsReques=
t ----=0A                     ---- CommandRequest ----=0A                  =
      ---- Command ----=0A                           ---- serviceChangeRequ=
est ----=0A                              ---- TerminationIDList ----=0A    =
                             ---- TerminationID ----=0A                    =
                ---- wildcard ----=0A                                      =
 ---- WildcardField ----=0A                                       ---- Wild=
cardField ----=0A                                          wildcardField: F=
F-FF-FF-FF-FF-FF-FF-FF- 00=0A                              ---- ServiceChan=
geParm ----=0A                                 ---- ServiceChangeMethod ---=
-=0A                                    {0000 0011}=3D 03h [003d] ServiceCh=
angeMethodrestart=0A                                 ---- ServiceChangeVers=
ion ----=0A                                    {0000 0001}=3D 01h [001d] Se=
rviceChangeVersion=0A                                 ---- Value ----=0A   =
                                 value: 16-0D-39-30-31-20-43-6F- 6C-64-20-4=
2-6F-6F-74=0A=0A  Is it correct ? =0A  Can any one help me in this.=0A=0ATh=
anks,=0AKumar=0A =0A=0A
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<P>=0AHi All,<BR>=0A&nbsp; I have a query about BER encoding of serviceChan=
geReason Parameter. As per rfc 3525 , this string is first BER-encoded as a=
n IA5String.<BR>=0AThe result of this BER-encoding is then encoded as an AS=
N.1 OCTET STRING type.<BR>=0A&nbsp; This is the encoded buffer for this Par=
ameter.<BR>=0A&nbsp; 04 0F 16 0D 39 30 31 20&nbsp; 43 6F 6C 64 20 42 6F 6F =
74 <BR>=0A&nbsp; First I encoded it as IA5 string (16 0D 39 30 31 20&nbsp; =
43 6F 6C 64 20 42 6F 6F 74) and then the result I encoded it as OctetString=
.<BR>=0A&nbsp; When I tried to decode with Hammer Call Anaylzer its not dec=
oding&nbsp; serviceChangeReason properly.<BR>=0A<BR>=0AHere Is the capture =
this packet.<BR>=0A<BR>=0A---- UDP ----<BR>=0A&nbsp;  ---- UDP header ----<=
BR>=0A&nbsp; &nbsp; &nbsp; 0B-81 =3D B81h [2945d] source port<BR>=0A&nbsp; =
&nbsp; &nbsp; 0B-81 =3D B81h [2945d] destination port<BR>=0A&nbsp; &nbsp; &=
nbsp; 00-7D =3D 7Dh [125d] length: octets include header (not less than 8)<=
BR>=0A&nbsp; &nbsp; &nbsp; E4-9B =3D E49Bh [58523d] checksum: checksum is c=
orrect<BR>=0A&nbsp;  ---- UDP datagram ----<BR>=0A---- H.248 ----<BR>=0A&nb=
sp;  {1010 0000}=3D A0h [160d]&nbsp; tag: 0x00 [000]<BR>=0A&nbsp;  ---- Mes=
sage ----<BR>=0A&nbsp; &nbsp; &nbsp; ---- version ----<BR>=0A&nbsp; &nbsp; =
&nbsp; &nbsp;  {0000 0001}=3D 01h [001d] version<BR>=0A&nbsp; &nbsp; &nbsp;=
 ---- MId ----<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp;  ---- IP4Address ----<BR>=
=0A&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ---- address ----<BR>=0A&nbsp;=
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  address: 192.168.5.8<BR>=0A&nbs=
p; &nbsp; &nbsp; ---- Transactions ----<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp;  =
---- TransactionRequest ----<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp=
; ---- TransactionID ----<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &=
nbsp;  {0110 0101}=3D 65h [101d] transactionID<BR>=0A&nbsp; &nbsp; &nbsp; &=
nbsp; &nbsp; &nbsp; ---- actions ----<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp; &nb=
sp; &nbsp; &nbsp;  ---- ActionRequest ----<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp=
; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ---- ContextID ----<BR>=0A&nbsp; &nbsp=
; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  {0000 0000}=3D 0=
0h [000d] contextID<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; ---- commandsRequest ----<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp; &=
nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  ---- CommandRequest ----<BR>=0A&n=
bsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; ---- Command ----<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &n=
bsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  ---- serviceChangeRequest -=
---<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &n=
bsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ---- TerminationIDList ----<BR>=0A&=
nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;=
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  ---- TerminationID ----<BR>=0A&nbsp; &=
nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;=
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ---- wildcard ----<BR>=0A&nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp=
; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  ---- WildcardField ----=
<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp=
; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  ---- Wild=
cardField ----<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp=
; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nb=
sp; &nbsp; &nbsp; wildcardField: FF-FF-FF-FF-FF-FF-FF-FF- 00<BR>=0A&nbsp; &=
nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;=
 &nbsp; &nbsp; &nbsp; ---- ServiceChangeParm ----<BR>=0A&nbsp; &nbsp; &nbsp=
; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nb=
sp; &nbsp; &nbsp;  ---- ServiceChangeMethod ----<BR>=0A&nbsp; &nbsp; &nbsp;=
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbs=
p; &nbsp; &nbsp; &nbsp; &nbsp; {0000 0011}=3D 03h [003d] ServiceChangeMetho=
drestart<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbs=
p; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  ---- ServiceChangeVers=
ion ----<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbs=
p; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {0000 000=
1}=3D 01h [001d] ServiceChangeVersion<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp; &nb=
sp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &=
nbsp;  ---- Value ----<BR>=0A&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbs=
p; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &n=
bsp; value: 16-0D-39-30-31-20-43-6F- 6C-64-20-42-6F-6F-74<BR>=0A<BR>=0A&nbs=
p; Is it correct ? <BR>=0A&nbsp; Can any one help me in this.<BR>=0A<BR>=0A=
Thanks,<BR>=0AKumar<BR>=0A <BR>=0A<BR>=0A=0A</P>=0A<br><br>=0A<A target=3D"=
_blank" HREF=3D"http://clients.rediff.com/signature/track_sig.asp"><IMG SRC=
=3D"http://ads.rediff.com/RealMedia/ads/adstream_nx.cgi/www.rediffmail.com/=
inbox.htm@Bottom" BORDER=3D0 VSPACE=3D0 HSPACE=3D0 HEIGHT=3D74 WIDTH=3D496>=
</a>=0A
--Next_1076332204---0-203.199.83.147-5394
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	charset=iso-8859-1
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Content-Transfer-Encoding: quoted-printable

Hi All,=0A  I have a query about BER encoding of serviceChangeReason Parame=
ter. As per rfc 3525 , this string is first BER-encoded as an IA5String.=0A=
The result of this BER-encoding is then encoded as an ASN.1 OCTET STRING ty=
pe.=0A  This is the encoded buffer for this Parameter.=0A  04 0F 16 0D 39 3=
0 31 20  43 6F 6C 64 20 42 6F 6F 74 =0A  First I encoded it as IA5 string (=
16 0D 39 30 31 20  43 6F 6C 64 20 42 6F 6F 74) and then the result I encode=
d it as OctetString.=0A  When I tried to decode with Hammer Call Anaylzer i=
ts not decoding  serviceChangeReason properly.=0A=0AHere Is the capture thi=
s packet.=0A=0A---- UDP ----=0A   ---- UDP header ----=0A      0B-81 =3D B8=
1h [2945d] source port=0A      0B-81 =3D B81h [2945d] destination port=0A  =
    00-7D =3D 7Dh [125d] length: octets include header (not less than 8)=0A=
      E4-9B =3D E49Bh [58523d] checksum: checksum is correct=0A   ---- UDP =
datagram ----=0A---- H.248 ----=0A   {1010 0000}=3D A0h [160d]  tag: 0x00 [=
000]=0A   ---- Message ----=0A      ---- version ----=0A         {0000 0001=
}=3D 01h [001d] version=0A      ---- MId ----=0A         ---- IP4Address --=
--=0A            ---- address ----=0A               address: 192.168.5.8=0A=
      ---- Transactions ----=0A         ---- TransactionRequest ----=0A    =
        ---- TransactionID ----=0A               {0110 0101}=3D 65h [101d] =
transactionID=0A            ---- actions ----=0A               ---- ActionR=
equest ----=0A                  ---- ContextID ----=0A                     =
{0000 0000}=3D 00h [000d] contextID=0A                  ---- commandsReques=
t ----=0A                     ---- CommandRequest ----=0A                  =
      ---- Command ----=0A                           ---- serviceChangeRequ=
est ----=0A                              ---- TerminationIDList ----=0A    =
                             ---- TerminationID ----=0A                    =
                ---- wildcard ----=0A                                      =
 ---- WildcardField ----=0A                                       ---- Wild=
cardField ----=0A                                          wildcardField: F=
F-FF-FF-FF-FF-FF-FF-FF- 00=0A                              ---- ServiceChan=
geParm ----=0A                                 ---- ServiceChangeMethod ---=
-=0A                                    {0000 0011}=3D 03h [003d] ServiceCh=
angeMethodrestart=0A                                 ---- ServiceChangeVers=
ion ----=0A                                    {0000 0001}=3D 01h [001d] Se=
rviceChangeVersion=0A                                 ---- Value ----=0A   =
                                 value: 16-0D-39-30-31-20-43-6F- 6C-64-20-4=
2-6F-6F-74=0A=0A  Is it correct ? =0A  Can any one help me in this.=0A=0ATh=
anks,=0AKumar=0A =0A=0A
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From: "Kevin Boyle" <kboyle@nortelnetworks.com>
To: Sachin Gupta <sachgupt@cisco.com>, Aleksandr Ryabin
	 <kengr@motorola.com>,
        sampathk@cisco.com, megaco@ietf.org
Cc: "Tom-PT Taylor" <taylor@nortelnetworks.com>
Subject: RE: [Megaco] Query Related to Automatic Metering
Date: Mon, 9 Feb 2004 11:33:04 -0500 
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The package cannot, and should not, mandate use of KA.  The text has been
updated via corrigendum to correct the alteration of the base protocol
function.  I will vigorously oppose any mandate of use of KA.

The package should function the same way as any other when KA is not
specified.

Kevin 

-----Original Message-----
From: Sachin Gupta [mailto:sachgupt@cisco.com] 
Sent: Friday, February 06, 2004 9:07 PM
To: Aleksandr Ryabin; sampathk@cisco.com; megaco@ietf.org
Cc: Taylor, Tom-PT [CAR:5N00:EXCH]; Boyle, Kevin [NCRTP:3Z40:EXCH]
Subject: RE: [Megaco] Query Related to Automatic Metering


Aleks,
The "KeepActive and EventbufferControl Procedures." in the metd package does
not mandate the use of KeepActive(KA) flag.

In case MGC comes with "metering pulse detection" event without KA Flag then
what should be MGs behaviour?

A) Should it do the normal processing (i.e stop all signals), as mentioned
in the base protocol, when this event is detected?
B) Should it report an error for the command request?
C) Should it do the processing as if KA flag is there, even though call
agent has not specified it?

Do we have any scenarios where detection of this event may require stopping
of currently applied signals? If not, then shouldn't the use of KA be
mandated?


Pls clarify.

Thanks
Sachin gupta

-----Original Message-----
From: megaco-admin@ietf.org [mailto:megaco-admin@ietf.org]On Behalf Of
Aleksandr Ryabin
Sent: Friday, February 06, 2004 8:48 AM
To: sampathk@cisco.com; megaco@ietf.org
Cc: 'Tom Taylor'; 'Kevin Boyle'
Subject: RE: [Megaco] Query Related to Automatic Metering


Sampath,

metd already adheres to that way as described in its "KeepActive and
EventbufferControl Procedures."

Regards,
         Aleks

>From: "Sampath Komanduri"<sampathk@cisco.com>
>To: "'Tom Taylor'"<taylor@nortelnetworks.com>,
>    "'Kevin Boyle'"<kboyle@nortelnetworks.com>,
>    "'Aleksandr Ryabin'"<kengr@motorola.com>
>Subject: RE: [Megaco] Query Related to Automatic Metering
>Date: Fri, 6 Feb 2004 01:14:07 -0800
>
>Hi Kevin/Aleks,
>Is my understanding correct that we are going to change the AMET and 
>METD package procedures to reflect the issue raised by gsachin and 
>agreed by
Tom?
>Pls. let me know.
>Thanks,
>Sampath
>
>-----Original Message-----
>From: megaco-admin@ietf.org [mailto:megaco-admin@ietf.org] On Behalf Of 
>Tom Taylor
>Sent: Monday, December 22, 2003 8:53 AM
>Cc: megaco@ietf.org
>Subject: Re: [Megaco] Query Related to Automatic Metering
>
>
>I think you make a good point.  It's desirable to keep the protocol 
>intact, rather than define exceptions within individual packages.
>
>gsachin wrote:
>
> >
> >
> >
> > Hi List,
> >
> >
> > this is a query regarding Periodic report event 'pr' defined in AMET 
> > package .the package procedure says that
> >
> > "the detection of event pr shall not cause the termination of the 
> > signal em or signal mbp, even if the KeppActive(KA) flag is not set 
> > for the pr event"
> >
> > what i feel is that the detection of the 'pr' event shall not cause 
> > the termination of any of the signals.
> >
> > pls tell me if this is a correct assumption?
> >
> > if yes, then i think here the package procedures should have 
> > mandated the use of KA flag with this event. Doing this will keep 
> > the protocol rules intact.
> >
> >
> >
> > Regards
> > Sachin Gupta


_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco


_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco

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<P><FONT SIZE=3D2>The package cannot, and should not, mandate use of =
KA.&nbsp; The text has been updated via corrigendum to correct the =
alteration of the base protocol function.&nbsp; I will vigorously =
oppose any mandate of use of KA.</FONT></P>

<P><FONT SIZE=3D2>The package should function the same way as any other =
when KA is not specified.</FONT>
</P>

<P><FONT SIZE=3D2>Kevin </FONT>
</P>

<P><FONT SIZE=3D2>-----Original Message-----</FONT>
<BR><FONT SIZE=3D2>From: Sachin Gupta [<A =
HREF=3D"mailto:sachgupt@cisco.com">mailto:sachgupt@cisco.com</A>] =
</FONT>
<BR><FONT SIZE=3D2>Sent: Friday, February 06, 2004 9:07 PM</FONT>
<BR><FONT SIZE=3D2>To: Aleksandr Ryabin; sampathk@cisco.com; =
megaco@ietf.org</FONT>
<BR><FONT SIZE=3D2>Cc: Taylor, Tom-PT [CAR:5N00:EXCH]; Boyle, Kevin =
[NCRTP:3Z40:EXCH]</FONT>
<BR><FONT SIZE=3D2>Subject: RE: [Megaco] Query Related to Automatic =
Metering</FONT>
</P>
<BR>

<P><FONT SIZE=3D2>Aleks,</FONT>
<BR><FONT SIZE=3D2>The &quot;KeepActive and EventbufferControl =
Procedures.&quot; in the metd package does not mandate the use of =
KeepActive(KA) flag.</FONT></P>

<P><FONT SIZE=3D2>In case MGC comes with &quot;metering pulse =
detection&quot; event without KA Flag then what should be MGs =
behaviour?</FONT>
</P>

<P><FONT SIZE=3D2>A) Should it do the normal processing (i.e stop all =
signals), as mentioned in the base protocol, when this event is =
detected?</FONT></P>

<P><FONT SIZE=3D2>B) Should it report an error for the command =
request?</FONT>
<BR><FONT SIZE=3D2>C) Should it do the processing as if KA flag is =
there, even though call agent has not specified it?</FONT>
</P>

<P><FONT SIZE=3D2>Do we have any scenarios where detection of this =
event may require stopping of currently applied signals? If not, then =
shouldn't the use of KA be mandated?</FONT></P>
<BR>

<P><FONT SIZE=3D2>Pls clarify.</FONT>
</P>

<P><FONT SIZE=3D2>Thanks</FONT>
<BR><FONT SIZE=3D2>Sachin gupta</FONT>
</P>

<P><FONT SIZE=3D2>-----Original Message-----</FONT>
<BR><FONT SIZE=3D2>From: megaco-admin@ietf.org [<A =
HREF=3D"mailto:megaco-admin@ietf.org">mailto:megaco-admin@ietf.org</A>]O=
n Behalf Of Aleksandr Ryabin</FONT>
<BR><FONT SIZE=3D2>Sent: Friday, February 06, 2004 8:48 AM</FONT>
<BR><FONT SIZE=3D2>To: sampathk@cisco.com; megaco@ietf.org</FONT>
<BR><FONT SIZE=3D2>Cc: 'Tom Taylor'; 'Kevin Boyle'</FONT>
<BR><FONT SIZE=3D2>Subject: RE: [Megaco] Query Related to Automatic =
Metering</FONT>
</P>
<BR>

<P><FONT SIZE=3D2>Sampath,</FONT>
</P>

<P><FONT SIZE=3D2>metd already adheres to that way as described in its =
&quot;KeepActive and EventbufferControl Procedures.&quot;</FONT>
</P>

<P><FONT SIZE=3D2>Regards,</FONT>
<BR><FONT SIZE=3D2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
Aleks</FONT>
</P>

<P><FONT SIZE=3D2>&gt;From: &quot;Sampath =
Komanduri&quot;&lt;sampathk@cisco.com&gt;</FONT>
<BR><FONT SIZE=3D2>&gt;To: &quot;'Tom =
Taylor'&quot;&lt;taylor@nortelnetworks.com&gt;,</FONT>
<BR><FONT SIZE=3D2>&gt;&nbsp;&nbsp;&nbsp; &quot;'Kevin =
Boyle'&quot;&lt;kboyle@nortelnetworks.com&gt;,</FONT>
<BR><FONT SIZE=3D2>&gt;&nbsp;&nbsp;&nbsp; &quot;'Aleksandr =
Ryabin'&quot;&lt;kengr@motorola.com&gt;</FONT>
<BR><FONT SIZE=3D2>&gt;Subject: RE: [Megaco] Query Related to Automatic =
Metering</FONT>
<BR><FONT SIZE=3D2>&gt;Date: Fri, 6 Feb 2004 01:14:07 -0800</FONT>
<BR><FONT SIZE=3D2>&gt;</FONT>
<BR><FONT SIZE=3D2>&gt;Hi Kevin/Aleks,</FONT>
<BR><FONT SIZE=3D2>&gt;Is my understanding correct that we are going to =
change the AMET and </FONT>
<BR><FONT SIZE=3D2>&gt;METD package procedures to reflect the issue =
raised by gsachin and </FONT>
<BR><FONT SIZE=3D2>&gt;agreed by</FONT>
<BR><FONT SIZE=3D2>Tom?</FONT>
<BR><FONT SIZE=3D2>&gt;Pls. let me know.</FONT>
<BR><FONT SIZE=3D2>&gt;Thanks,</FONT>
<BR><FONT SIZE=3D2>&gt;Sampath</FONT>
<BR><FONT SIZE=3D2>&gt;</FONT>
<BR><FONT SIZE=3D2>&gt;-----Original Message-----</FONT>
<BR><FONT SIZE=3D2>&gt;From: megaco-admin@ietf.org [<A =
HREF=3D"mailto:megaco-admin@ietf.org">mailto:megaco-admin@ietf.org</A>] =
On Behalf Of </FONT>
<BR><FONT SIZE=3D2>&gt;Tom Taylor</FONT>
<BR><FONT SIZE=3D2>&gt;Sent: Monday, December 22, 2003 8:53 AM</FONT>
<BR><FONT SIZE=3D2>&gt;Cc: megaco@ietf.org</FONT>
<BR><FONT SIZE=3D2>&gt;Subject: Re: [Megaco] Query Related to Automatic =
Metering</FONT>
<BR><FONT SIZE=3D2>&gt;</FONT>
<BR><FONT SIZE=3D2>&gt;</FONT>
<BR><FONT SIZE=3D2>&gt;I think you make a good point.&nbsp; It's =
desirable to keep the protocol </FONT>
<BR><FONT SIZE=3D2>&gt;intact, rather than define exceptions within =
individual packages.</FONT>
<BR><FONT SIZE=3D2>&gt;</FONT>
<BR><FONT SIZE=3D2>&gt;gsachin wrote:</FONT>
<BR><FONT SIZE=3D2>&gt;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt; Hi List,</FONT>
<BR><FONT SIZE=3D2>&gt; &gt;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt; this is a query regarding Periodic report =
event 'pr' defined in AMET </FONT>
<BR><FONT SIZE=3D2>&gt; &gt; package .the package procedure says =
that</FONT>
<BR><FONT SIZE=3D2>&gt; &gt;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt; &quot;the detection of event pr shall not =
cause the termination of the </FONT>
<BR><FONT SIZE=3D2>&gt; &gt; signal em or signal mbp, even if the =
KeppActive(KA) flag is not set </FONT>
<BR><FONT SIZE=3D2>&gt; &gt; for the pr event&quot;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt; what i feel is that the detection of the =
'pr' event shall not cause </FONT>
<BR><FONT SIZE=3D2>&gt; &gt; the termination of any of the =
signals.</FONT>
<BR><FONT SIZE=3D2>&gt; &gt;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt; pls tell me if this is a correct =
assumption?</FONT>
<BR><FONT SIZE=3D2>&gt; &gt;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt; if yes, then i think here the package =
procedures should have </FONT>
<BR><FONT SIZE=3D2>&gt; &gt; mandated the use of KA flag with this =
event. Doing this will keep </FONT>
<BR><FONT SIZE=3D2>&gt; &gt; the protocol rules intact.</FONT>
<BR><FONT SIZE=3D2>&gt; &gt;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt; Regards</FONT>
<BR><FONT SIZE=3D2>&gt; &gt; Sachin Gupta</FONT>
</P>
<BR>

<P><FONT =
SIZE=3D2>_______________________________________________</FONT>
<BR><FONT SIZE=3D2>Megaco mailing list</FONT>
<BR><FONT SIZE=3D2>Megaco@ietf.org</FONT>
<BR><FONT SIZE=3D2><A =
HREF=3D"https://www1.ietf.org/mailman/listinfo/megaco" =
TARGET=3D"_blank">https://www1.ietf.org/mailman/listinfo/megaco</A></FON=
T>
</P>
<BR>

<P><FONT =
SIZE=3D2>_______________________________________________</FONT>
<BR><FONT SIZE=3D2>Megaco mailing list</FONT>
<BR><FONT SIZE=3D2>Megaco@ietf.org</FONT>
<BR><FONT SIZE=3D2><A =
HREF=3D"https://www1.ietf.org/mailman/listinfo/megaco" =
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From: "Kevin Boyle" <kboyle@nortelnetworks.com>
To: Sachin Gupta <sachgupt@cisco.com>, Aleksandr Ryabin
	 <kengr@motorola.com>,
        sampathk@cisco.com, megaco@ietf.org
Cc: "Tom-PT Taylor" <taylor@nortelnetworks.com>
Subject: RE: [Megaco] Query Related to Automatic Metering
Date: Mon, 9 Feb 2004 11:33:04 -0500 
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The package cannot, and should not, mandate use of KA.  The text has been
updated via corrigendum to correct the alteration of the base protocol
function.  I will vigorously oppose any mandate of use of KA.

The package should function the same way as any other when KA is not
specified.

Kevin 

-----Original Message-----
From: Sachin Gupta [mailto:sachgupt@cisco.com] 
Sent: Friday, February 06, 2004 9:07 PM
To: Aleksandr Ryabin; sampathk@cisco.com; megaco@ietf.org
Cc: Taylor, Tom-PT [CAR:5N00:EXCH]; Boyle, Kevin [NCRTP:3Z40:EXCH]
Subject: RE: [Megaco] Query Related to Automatic Metering


Aleks,
The "KeepActive and EventbufferControl Procedures." in the metd package does
not mandate the use of KeepActive(KA) flag.

In case MGC comes with "metering pulse detection" event without KA Flag then
what should be MGs behaviour?

A) Should it do the normal processing (i.e stop all signals), as mentioned
in the base protocol, when this event is detected?
B) Should it report an error for the command request?
C) Should it do the processing as if KA flag is there, even though call
agent has not specified it?

Do we have any scenarios where detection of this event may require stopping
of currently applied signals? If not, then shouldn't the use of KA be
mandated?


Pls clarify.

Thanks
Sachin gupta

-----Original Message-----
From: megaco-admin@ietf.org [mailto:megaco-admin@ietf.org]On Behalf Of
Aleksandr Ryabin
Sent: Friday, February 06, 2004 8:48 AM
To: sampathk@cisco.com; megaco@ietf.org
Cc: 'Tom Taylor'; 'Kevin Boyle'
Subject: RE: [Megaco] Query Related to Automatic Metering


Sampath,

metd already adheres to that way as described in its "KeepActive and
EventbufferControl Procedures."

Regards,
         Aleks

>From: "Sampath Komanduri"<sampathk@cisco.com>
>To: "'Tom Taylor'"<taylor@nortelnetworks.com>,
>    "'Kevin Boyle'"<kboyle@nortelnetworks.com>,
>    "'Aleksandr Ryabin'"<kengr@motorola.com>
>Subject: RE: [Megaco] Query Related to Automatic Metering
>Date: Fri, 6 Feb 2004 01:14:07 -0800
>
>Hi Kevin/Aleks,
>Is my understanding correct that we are going to change the AMET and 
>METD package procedures to reflect the issue raised by gsachin and 
>agreed by
Tom?
>Pls. let me know.
>Thanks,
>Sampath
>
>-----Original Message-----
>From: megaco-admin@ietf.org [mailto:megaco-admin@ietf.org] On Behalf Of 
>Tom Taylor
>Sent: Monday, December 22, 2003 8:53 AM
>Cc: megaco@ietf.org
>Subject: Re: [Megaco] Query Related to Automatic Metering
>
>
>I think you make a good point.  It's desirable to keep the protocol 
>intact, rather than define exceptions within individual packages.
>
>gsachin wrote:
>
> >
> >
> >
> > Hi List,
> >
> >
> > this is a query regarding Periodic report event 'pr' defined in AMET 
> > package .the package procedure says that
> >
> > "the detection of event pr shall not cause the termination of the 
> > signal em or signal mbp, even if the KeppActive(KA) flag is not set 
> > for the pr event"
> >
> > what i feel is that the detection of the 'pr' event shall not cause 
> > the termination of any of the signals.
> >
> > pls tell me if this is a correct assumption?
> >
> > if yes, then i think here the package procedures should have 
> > mandated the use of KA flag with this event. Doing this will keep 
> > the protocol rules intact.
> >
> >
> >
> > Regards
> > Sachin Gupta


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<TITLE>RE: [Megaco] Query Related to Automatic Metering</TITLE>
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<P><FONT SIZE=3D2>The package cannot, and should not, mandate use of =
KA.&nbsp; The text has been updated via corrigendum to correct the =
alteration of the base protocol function.&nbsp; I will vigorously =
oppose any mandate of use of KA.</FONT></P>

<P><FONT SIZE=3D2>The package should function the same way as any other =
when KA is not specified.</FONT>
</P>

<P><FONT SIZE=3D2>Kevin </FONT>
</P>

<P><FONT SIZE=3D2>-----Original Message-----</FONT>
<BR><FONT SIZE=3D2>From: Sachin Gupta [<A =
HREF=3D"mailto:sachgupt@cisco.com">mailto:sachgupt@cisco.com</A>] =
</FONT>
<BR><FONT SIZE=3D2>Sent: Friday, February 06, 2004 9:07 PM</FONT>
<BR><FONT SIZE=3D2>To: Aleksandr Ryabin; sampathk@cisco.com; =
megaco@ietf.org</FONT>
<BR><FONT SIZE=3D2>Cc: Taylor, Tom-PT [CAR:5N00:EXCH]; Boyle, Kevin =
[NCRTP:3Z40:EXCH]</FONT>
<BR><FONT SIZE=3D2>Subject: RE: [Megaco] Query Related to Automatic =
Metering</FONT>
</P>
<BR>

<P><FONT SIZE=3D2>Aleks,</FONT>
<BR><FONT SIZE=3D2>The &quot;KeepActive and EventbufferControl =
Procedures.&quot; in the metd package does not mandate the use of =
KeepActive(KA) flag.</FONT></P>

<P><FONT SIZE=3D2>In case MGC comes with &quot;metering pulse =
detection&quot; event without KA Flag then what should be MGs =
behaviour?</FONT>
</P>

<P><FONT SIZE=3D2>A) Should it do the normal processing (i.e stop all =
signals), as mentioned in the base protocol, when this event is =
detected?</FONT></P>

<P><FONT SIZE=3D2>B) Should it report an error for the command =
request?</FONT>
<BR><FONT SIZE=3D2>C) Should it do the processing as if KA flag is =
there, even though call agent has not specified it?</FONT>
</P>

<P><FONT SIZE=3D2>Do we have any scenarios where detection of this =
event may require stopping of currently applied signals? If not, then =
shouldn't the use of KA be mandated?</FONT></P>
<BR>

<P><FONT SIZE=3D2>Pls clarify.</FONT>
</P>

<P><FONT SIZE=3D2>Thanks</FONT>
<BR><FONT SIZE=3D2>Sachin gupta</FONT>
</P>

<P><FONT SIZE=3D2>-----Original Message-----</FONT>
<BR><FONT SIZE=3D2>From: megaco-admin@ietf.org [<A =
HREF=3D"mailto:megaco-admin@ietf.org">mailto:megaco-admin@ietf.org</A>]O=
n Behalf Of Aleksandr Ryabin</FONT>
<BR><FONT SIZE=3D2>Sent: Friday, February 06, 2004 8:48 AM</FONT>
<BR><FONT SIZE=3D2>To: sampathk@cisco.com; megaco@ietf.org</FONT>
<BR><FONT SIZE=3D2>Cc: 'Tom Taylor'; 'Kevin Boyle'</FONT>
<BR><FONT SIZE=3D2>Subject: RE: [Megaco] Query Related to Automatic =
Metering</FONT>
</P>
<BR>

<P><FONT SIZE=3D2>Sampath,</FONT>
</P>

<P><FONT SIZE=3D2>metd already adheres to that way as described in its =
&quot;KeepActive and EventbufferControl Procedures.&quot;</FONT>
</P>

<P><FONT SIZE=3D2>Regards,</FONT>
<BR><FONT SIZE=3D2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
Aleks</FONT>
</P>

<P><FONT SIZE=3D2>&gt;From: &quot;Sampath =
Komanduri&quot;&lt;sampathk@cisco.com&gt;</FONT>
<BR><FONT SIZE=3D2>&gt;To: &quot;'Tom =
Taylor'&quot;&lt;taylor@nortelnetworks.com&gt;,</FONT>
<BR><FONT SIZE=3D2>&gt;&nbsp;&nbsp;&nbsp; &quot;'Kevin =
Boyle'&quot;&lt;kboyle@nortelnetworks.com&gt;,</FONT>
<BR><FONT SIZE=3D2>&gt;&nbsp;&nbsp;&nbsp; &quot;'Aleksandr =
Ryabin'&quot;&lt;kengr@motorola.com&gt;</FONT>
<BR><FONT SIZE=3D2>&gt;Subject: RE: [Megaco] Query Related to Automatic =
Metering</FONT>
<BR><FONT SIZE=3D2>&gt;Date: Fri, 6 Feb 2004 01:14:07 -0800</FONT>
<BR><FONT SIZE=3D2>&gt;</FONT>
<BR><FONT SIZE=3D2>&gt;Hi Kevin/Aleks,</FONT>
<BR><FONT SIZE=3D2>&gt;Is my understanding correct that we are going to =
change the AMET and </FONT>
<BR><FONT SIZE=3D2>&gt;METD package procedures to reflect the issue =
raised by gsachin and </FONT>
<BR><FONT SIZE=3D2>&gt;agreed by</FONT>
<BR><FONT SIZE=3D2>Tom?</FONT>
<BR><FONT SIZE=3D2>&gt;Pls. let me know.</FONT>
<BR><FONT SIZE=3D2>&gt;Thanks,</FONT>
<BR><FONT SIZE=3D2>&gt;Sampath</FONT>
<BR><FONT SIZE=3D2>&gt;</FONT>
<BR><FONT SIZE=3D2>&gt;-----Original Message-----</FONT>
<BR><FONT SIZE=3D2>&gt;From: megaco-admin@ietf.org [<A =
HREF=3D"mailto:megaco-admin@ietf.org">mailto:megaco-admin@ietf.org</A>] =
On Behalf Of </FONT>
<BR><FONT SIZE=3D2>&gt;Tom Taylor</FONT>
<BR><FONT SIZE=3D2>&gt;Sent: Monday, December 22, 2003 8:53 AM</FONT>
<BR><FONT SIZE=3D2>&gt;Cc: megaco@ietf.org</FONT>
<BR><FONT SIZE=3D2>&gt;Subject: Re: [Megaco] Query Related to Automatic =
Metering</FONT>
<BR><FONT SIZE=3D2>&gt;</FONT>
<BR><FONT SIZE=3D2>&gt;</FONT>
<BR><FONT SIZE=3D2>&gt;I think you make a good point.&nbsp; It's =
desirable to keep the protocol </FONT>
<BR><FONT SIZE=3D2>&gt;intact, rather than define exceptions within =
individual packages.</FONT>
<BR><FONT SIZE=3D2>&gt;</FONT>
<BR><FONT SIZE=3D2>&gt;gsachin wrote:</FONT>
<BR><FONT SIZE=3D2>&gt;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt; Hi List,</FONT>
<BR><FONT SIZE=3D2>&gt; &gt;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt; this is a query regarding Periodic report =
event 'pr' defined in AMET </FONT>
<BR><FONT SIZE=3D2>&gt; &gt; package .the package procedure says =
that</FONT>
<BR><FONT SIZE=3D2>&gt; &gt;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt; &quot;the detection of event pr shall not =
cause the termination of the </FONT>
<BR><FONT SIZE=3D2>&gt; &gt; signal em or signal mbp, even if the =
KeppActive(KA) flag is not set </FONT>
<BR><FONT SIZE=3D2>&gt; &gt; for the pr event&quot;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt; what i feel is that the detection of the =
'pr' event shall not cause </FONT>
<BR><FONT SIZE=3D2>&gt; &gt; the termination of any of the =
signals.</FONT>
<BR><FONT SIZE=3D2>&gt; &gt;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt; pls tell me if this is a correct =
assumption?</FONT>
<BR><FONT SIZE=3D2>&gt; &gt;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt; if yes, then i think here the package =
procedures should have </FONT>
<BR><FONT SIZE=3D2>&gt; &gt; mandated the use of KA flag with this =
event. Doing this will keep </FONT>
<BR><FONT SIZE=3D2>&gt; &gt; the protocol rules intact.</FONT>
<BR><FONT SIZE=3D2>&gt; &gt;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt;</FONT>
<BR><FONT SIZE=3D2>&gt; &gt; Regards</FONT>
<BR><FONT SIZE=3D2>&gt; &gt; Sachin Gupta</FONT>
</P>
<BR>

<P><FONT =
SIZE=3D2>_______________________________________________</FONT>
<BR><FONT SIZE=3D2>Megaco mailing list</FONT>
<BR><FONT SIZE=3D2>Megaco@ietf.org</FONT>
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HREF=3D"https://www1.ietf.org/mailman/listinfo/megaco" =
TARGET=3D"_blank">https://www1.ietf.org/mailman/listinfo/megaco</A></FON=
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</P>
<BR>

<P><FONT =
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<BR><FONT SIZE=3D2>Megaco mailing list</FONT>
<BR><FONT SIZE=3D2>Megaco@ietf.org</FONT>
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kumaraswamy Uppu wrote:

> Hi All,
>   I have a query about BER encoding of serviceChangeReason Parameter. As per rfc 3525 , this string is first BER-encoded as an IA5String.
> The result of this BER-encoding is then encoded as an ASN.1 OCTET STRING type.
>   This is the encoded buffer for this Parameter.
>   04 0F 16 0D 39 30 31 20  43 6F 6C 64 20 42 6F 6F 74 
>   First I encoded it as IA5 string (16 0D 39 30 31 20  43 6F 6C 64 20 42 6F 6F 74) and then the result I encoded it as OctetString.
>   When I tried to decode with Hammer Call Anaylzer its not decoding  serviceChangeReason properly.
> 
> Here Is the capture this packet.
> 
> ---- UDP ----
>    ---- UDP header ----
>       0B-81 = B81h [2945d] source port
>       0B-81 = B81h [2945d] destination port
>       00-7D = 7Dh [125d] length: octets include header (not less than 8)
>       E4-9B = E49Bh [58523d] checksum: checksum is correct
>    ---- UDP datagram ----
> ---- H.248 ----
>    {1010 0000}= A0h [160d]  tag: 0x00 [000]
>    ---- Message ----
>       ---- version ----
>          {0000 0001}= 01h [001d] version
>       ---- MId ----
>          ---- IP4Address ----
>             ---- address ----
>                address: 192.168.5.8
>       ---- Transactions ----
>          ---- TransactionRequest ----
>             ---- TransactionID ----
>                {0110 0101}= 65h [101d] transactionID
>             ---- actions ----
>                ---- ActionRequest ----
>                   ---- ContextID ----
>                      {0000 0000}= 00h [000d] contextID
>                   ---- commandsRequest ----
>                      ---- CommandRequest ----
>                         ---- Command ----
>                            ---- serviceChangeRequest ----
>                               ---- TerminationIDList ----
>                                  ---- TerminationID ----
>                                     ---- wildcard ----
>                                        ---- WildcardField ----
>                                        ---- WildcardField ----
>                                           wildcardField: FF-FF-FF-FF-FF-FF-FF-FF- 00
>                               ---- ServiceChangeParm ----
>                                  ---- ServiceChangeMethod ----
>                                     {0000 0011}= 03h [003d] ServiceChangeMethodrestart
>                                  ---- ServiceChangeVersion ----
>                                     {0000 0001}= 01h [001d] ServiceChangeVersion
>                                  ---- Value ----
>                                     value: 16-0D-39-30-31-20-43-6F- 6C-64-20-42-6F-6F-74
> 
>   Is it correct ? 
>   Can any one help me in this.
> 

I have two guesses.

It's been too long since I looked at BER internals,
but looking at the last part of your output.

 >         ---- Value ----
 >       value: 16-0D-39-30-31-20-43-6F-6C-64-20-42-6F-6F-74
 >
                       9  0  1 sp  C  o  l  d sp  B  o  o  t

16-0D is the tag-len for an IA5String.

Also, judging from the structured output of your call analyzer,
it appears that it found the positional OCTET-STRING tag-len
that proceeds the one for the IA5String.

So one GUESS is that your call analyzer is broken/obsolete.
H.248 was out for some time before the serviceChangeReason was
clarified via an IG to be double wrapped.  Actually, it's not
decoding anything wrong, it's just not decoding it fully.



Guess 2:

 >   This is the encoded buffer for this Parameter.
 >   04 0F 16 0D 39 30 31 20  43 6F 6C 64 20 42 6F 6F 74

04-0F should be the tag-len for the OCTET STRING.  0F is
the correct len.  04 appears to be an incorrect or paritial
tag.  The tag should be 0x8004 before encoding.  0x8000
comes from it being a context specific class (not universal).
The 0x8004 gets encoded into a multibyte form and comes out

	11 04 0f 16 0d 39 ...

-troy




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kumaraswamy Uppu wrote:

> Hi All,
>   I have a query about BER encoding of serviceChangeReason Parameter. As per rfc 3525 , this string is first BER-encoded as an IA5String.
> The result of this BER-encoding is then encoded as an ASN.1 OCTET STRING type.
>   This is the encoded buffer for this Parameter.
>   04 0F 16 0D 39 30 31 20  43 6F 6C 64 20 42 6F 6F 74 
>   First I encoded it as IA5 string (16 0D 39 30 31 20  43 6F 6C 64 20 42 6F 6F 74) and then the result I encoded it as OctetString.
>   When I tried to decode with Hammer Call Anaylzer its not decoding  serviceChangeReason properly.
> 
> Here Is the capture this packet.
> 
> ---- UDP ----
>    ---- UDP header ----
>       0B-81 = B81h [2945d] source port
>       0B-81 = B81h [2945d] destination port
>       00-7D = 7Dh [125d] length: octets include header (not less than 8)
>       E4-9B = E49Bh [58523d] checksum: checksum is correct
>    ---- UDP datagram ----
> ---- H.248 ----
>    {1010 0000}= A0h [160d]  tag: 0x00 [000]
>    ---- Message ----
>       ---- version ----
>          {0000 0001}= 01h [001d] version
>       ---- MId ----
>          ---- IP4Address ----
>             ---- address ----
>                address: 192.168.5.8
>       ---- Transactions ----
>          ---- TransactionRequest ----
>             ---- TransactionID ----
>                {0110 0101}= 65h [101d] transactionID
>             ---- actions ----
>                ---- ActionRequest ----
>                   ---- ContextID ----
>                      {0000 0000}= 00h [000d] contextID
>                   ---- commandsRequest ----
>                      ---- CommandRequest ----
>                         ---- Command ----
>                            ---- serviceChangeRequest ----
>                               ---- TerminationIDList ----
>                                  ---- TerminationID ----
>                                     ---- wildcard ----
>                                        ---- WildcardField ----
>                                        ---- WildcardField ----
>                                           wildcardField: FF-FF-FF-FF-FF-FF-FF-FF- 00
>                               ---- ServiceChangeParm ----
>                                  ---- ServiceChangeMethod ----
>                                     {0000 0011}= 03h [003d] ServiceChangeMethodrestart
>                                  ---- ServiceChangeVersion ----
>                                     {0000 0001}= 01h [001d] ServiceChangeVersion
>                                  ---- Value ----
>                                     value: 16-0D-39-30-31-20-43-6F- 6C-64-20-42-6F-6F-74
> 
>   Is it correct ? 
>   Can any one help me in this.
> 

I have two guesses.

It's been too long since I looked at BER internals,
but looking at the last part of your output.

 >         ---- Value ----
 >       value: 16-0D-39-30-31-20-43-6F-6C-64-20-42-6F-6F-74
 >
                       9  0  1 sp  C  o  l  d sp  B  o  o  t

16-0D is the tag-len for an IA5String.

Also, judging from the structured output of your call analyzer,
it appears that it found the positional OCTET-STRING tag-len
that proceeds the one for the IA5String.

So one GUESS is that your call analyzer is broken/obsolete.
H.248 was out for some time before the serviceChangeReason was
clarified via an IG to be double wrapped.  Actually, it's not
decoding anything wrong, it's just not decoding it fully.



Guess 2:

 >   This is the encoded buffer for this Parameter.
 >   04 0F 16 0D 39 30 31 20  43 6F 6C 64 20 42 6F 6F 74

04-0F should be the tag-len for the OCTET STRING.  0F is
the correct len.  04 appears to be an incorrect or paritial
tag.  The tag should be 0x8004 before encoding.  0x8000
comes from it being a context specific class (not universal).
The 0x8004 gets encoded into a multibyte form and comes out

	11 04 0f 16 0d 39 ...

-troy




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Hi,all
if MGC receives a message svc.req(ROOT,Method=3DDisconnection) ,
I am not sure if MGC should sends audit command after svc.reply,
and if MGC sends audit to MGW, how MGC should use audit.reply,
that is what should MGC deal with the reply message. Thanks a lot!
                                   Simba

=20


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<META HTTP-EQUIV=3D"Content-Type" CONTENT=3D"text/html; =
charset=3Dgb2312">
<TITLE id=3DridTitle>=B1=F9=B4=A8</TITLE>

<STYLE>BODY {
	MARGIN-TOP: 20px; FONT-SIZE: 10pt; MARGIN-LEFT: 50px; COLOR: #006666; =
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<DIV><SPAN class=3D109582308-11022004>Hi,all</SPAN></DIV>
<DIV><SPAN class=3D109582308-11022004>if MGC receives a message=20
svc.req(ROOT,Method=3DDisconnection) ,</SPAN></DIV>
<DIV><SPAN class=3D109582308-11022004>I am not sure if MGC should sends =
audit=20
command after svc.reply,</SPAN></DIV>
<DIV><SPAN class=3D109582308-11022004>and if MGC sends audit to MGW, how =
MGC=20
should use audit.reply,</SPAN></DIV>
<DIV><SPAN class=3D109582308-11022004>that is what should MGC deal with =
the reply=20
message. Thanks a lot!</SPAN></DIV>
<DIV><SPAN=20
class=3D109582308-11022004>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;=20
Simba</SPAN></DIV>
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Hi,all
if MGC receives a message svc.req(ROOT,Method=3DDisconnection) ,
I am not sure if MGC should sends audit command after svc.reply,
and if MGC sends audit to MGW, how MGC should use audit.reply,
that is what should MGC deal with the reply message. Thanks a lot!
                                   Simba

=20


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<STYLE>BODY {
	MARGIN-TOP: 20px; FONT-SIZE: 10pt; MARGIN-LEFT: 50px; COLOR: #006666; =
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<DIV><SPAN class=3D109582308-11022004>Hi,all</SPAN></DIV>
<DIV><SPAN class=3D109582308-11022004>if MGC receives a message=20
svc.req(ROOT,Method=3DDisconnection) ,</SPAN></DIV>
<DIV><SPAN class=3D109582308-11022004>I am not sure if MGC should sends =
audit=20
command after svc.reply,</SPAN></DIV>
<DIV><SPAN class=3D109582308-11022004>and if MGC sends audit to MGW, how =
MGC=20
should use audit.reply,</SPAN></DIV>
<DIV><SPAN class=3D109582308-11022004>that is what should MGC deal with =
the reply=20
message. Thanks a lot!</SPAN></DIV>
<DIV><SPAN=20
class=3D109582308-11022004>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;=20
Simba</SPAN></DIV>
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Troy Cauble wrote:
> kumaraswamy Uppu wrote:
> 
>> Hi All,
>>   I have a query about BER encoding of serviceChangeReason Parameter. 
>> As per rfc 3525 , this string is first BER-encoded as an IA5String.
>> The result of this BER-encoding is then encoded as an ASN.1 OCTET 
>> STRING type.
>>   This is the encoded buffer for this Parameter.
>>   04 0F 16 0D 39 30 31 20  43 6F 6C 64 20 42 6F 6F 74   First I 
>> encoded it as IA5 string (16 0D 39 30 31 20  43 6F 6C 64 20 42 6F 6F 
>> 74) and then the result I encoded it as OctetString.
>>   When I tried to decode with Hammer Call Anaylzer its not decoding  
>> serviceChangeReason properly.
>>
>> Here Is the capture this packet.
>>
>> ---- UDP ----
>>    ---- UDP header ----
>>       0B-81 = B81h [2945d] source port
>>       0B-81 = B81h [2945d] destination port
>>       00-7D = 7Dh [125d] length: octets include header (not less than 8)
>>       E4-9B = E49Bh [58523d] checksum: checksum is correct
>>    ---- UDP datagram ----
>> ---- H.248 ----
>>    {1010 0000}= A0h [160d]  tag: 0x00 [000]
>>    ---- Message ----
>>       ---- version ----
>>          {0000 0001}= 01h [001d] version
>>       ---- MId ----
>>          ---- IP4Address ----
>>             ---- address ----
>>                address: 192.168.5.8
>>       ---- Transactions ----
>>          ---- TransactionRequest ----
>>             ---- TransactionID ----
>>                {0110 0101}= 65h [101d] transactionID
>>             ---- actions ----
>>                ---- ActionRequest ----
>>                   ---- ContextID ----
>>                      {0000 0000}= 00h [000d] contextID
>>                   ---- commandsRequest ----
>>                      ---- CommandRequest ----
>>                         ---- Command ----
>>                            ---- serviceChangeRequest ----
>>                               ---- TerminationIDList ----
>>                                  ---- TerminationID ----
>>                                     ---- wildcard ----
>>                                        ---- WildcardField ----
>>                                        ---- WildcardField ----
>>                                           wildcardField: 
>> FF-FF-FF-FF-FF-FF-FF-FF- 00
>>                               ---- ServiceChangeParm ----
>>                                  ---- ServiceChangeMethod ----
>>                                     {0000 0011}= 03h [003d] 
>> ServiceChangeMethodrestart
>>                                  ---- ServiceChangeVersion ----
>>                                     {0000 0001}= 01h [001d] 
>> ServiceChangeVersion
>>                                  ---- Value ----
>>                                     value: 16-0D-39-30-31-20-43-6F- 
>> 6C-64-20-42-6F-6F-74
>>
>>   Is it correct ?   Can any one help me in this.
>>
> 
> I have two guesses.
> 
> It's been too long since I looked at BER internals,
> but looking at the last part of your output.
> 
>  >         ---- Value ----
>  >       value: 16-0D-39-30-31-20-43-6F-6C-64-20-42-6F-6F-74
>  >
>                       9  0  1 sp  C  o  l  d sp  B  o  o  t
> 
> 16-0D is the tag-len for an IA5String.
> 
> Also, judging from the structured output of your call analyzer,
> it appears that it found the positional OCTET-STRING tag-len
> that proceeds the one for the IA5String.
> 
> So one GUESS is that your call analyzer is broken/obsolete.
> H.248 was out for some time before the serviceChangeReason was
> clarified via an IG to be double wrapped.  Actually, it's not
> decoding anything wrong, it's just not decoding it fully.
> 
> 
> 
> Guess 2:
> 
>  >   This is the encoded buffer for this Parameter.
>  >   04 0F 16 0D 39 30 31 20  43 6F 6C 64 20 42 6F 6F 74
> 
> 04-0F should be the tag-len for the OCTET STRING.  0F is
> the correct len.  04 appears to be an incorrect or paritial
> tag.  The tag should be 0x8004 before encoding.  0x8000
> comes from it being a context specific class (not universal).
> The 0x8004 gets encoded into a multibyte form and comes out
> 
>     11 04 0f 16 0d 39 ...
> 
> -troy

On review, my second guess is wrong. 04-0F is the correct
tag-len for the octet string.  It is not a context specific
class.

The context specific class is the Value level which requires
another tag-len encoding.  So the whole scReason would be

	a4 11 04 0f 16 0d 39 ...

-troy

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Date: Wed, 11 Feb 2004 09:11:13 -0500
From: Troy Cauble <troy@bell-labs.com>
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Troy Cauble wrote:
> kumaraswamy Uppu wrote:
> 
>> Hi All,
>>   I have a query about BER encoding of serviceChangeReason Parameter. 
>> As per rfc 3525 , this string is first BER-encoded as an IA5String.
>> The result of this BER-encoding is then encoded as an ASN.1 OCTET 
>> STRING type.
>>   This is the encoded buffer for this Parameter.
>>   04 0F 16 0D 39 30 31 20  43 6F 6C 64 20 42 6F 6F 74   First I 
>> encoded it as IA5 string (16 0D 39 30 31 20  43 6F 6C 64 20 42 6F 6F 
>> 74) and then the result I encoded it as OctetString.
>>   When I tried to decode with Hammer Call Anaylzer its not decoding  
>> serviceChangeReason properly.
>>
>> Here Is the capture this packet.
>>
>> ---- UDP ----
>>    ---- UDP header ----
>>       0B-81 = B81h [2945d] source port
>>       0B-81 = B81h [2945d] destination port
>>       00-7D = 7Dh [125d] length: octets include header (not less than 8)
>>       E4-9B = E49Bh [58523d] checksum: checksum is correct
>>    ---- UDP datagram ----
>> ---- H.248 ----
>>    {1010 0000}= A0h [160d]  tag: 0x00 [000]
>>    ---- Message ----
>>       ---- version ----
>>          {0000 0001}= 01h [001d] version
>>       ---- MId ----
>>          ---- IP4Address ----
>>             ---- address ----
>>                address: 192.168.5.8
>>       ---- Transactions ----
>>          ---- TransactionRequest ----
>>             ---- TransactionID ----
>>                {0110 0101}= 65h [101d] transactionID
>>             ---- actions ----
>>                ---- ActionRequest ----
>>                   ---- ContextID ----
>>                      {0000 0000}= 00h [000d] contextID
>>                   ---- commandsRequest ----
>>                      ---- CommandRequest ----
>>                         ---- Command ----
>>                            ---- serviceChangeRequest ----
>>                               ---- TerminationIDList ----
>>                                  ---- TerminationID ----
>>                                     ---- wildcard ----
>>                                        ---- WildcardField ----
>>                                        ---- WildcardField ----
>>                                           wildcardField: 
>> FF-FF-FF-FF-FF-FF-FF-FF- 00
>>                               ---- ServiceChangeParm ----
>>                                  ---- ServiceChangeMethod ----
>>                                     {0000 0011}= 03h [003d] 
>> ServiceChangeMethodrestart
>>                                  ---- ServiceChangeVersion ----
>>                                     {0000 0001}= 01h [001d] 
>> ServiceChangeVersion
>>                                  ---- Value ----
>>                                     value: 16-0D-39-30-31-20-43-6F- 
>> 6C-64-20-42-6F-6F-74
>>
>>   Is it correct ?   Can any one help me in this.
>>
> 
> I have two guesses.
> 
> It's been too long since I looked at BER internals,
> but looking at the last part of your output.
> 
>  >         ---- Value ----
>  >       value: 16-0D-39-30-31-20-43-6F-6C-64-20-42-6F-6F-74
>  >
>                       9  0  1 sp  C  o  l  d sp  B  o  o  t
> 
> 16-0D is the tag-len for an IA5String.
> 
> Also, judging from the structured output of your call analyzer,
> it appears that it found the positional OCTET-STRING tag-len
> that proceeds the one for the IA5String.
> 
> So one GUESS is that your call analyzer is broken/obsolete.
> H.248 was out for some time before the serviceChangeReason was
> clarified via an IG to be double wrapped.  Actually, it's not
> decoding anything wrong, it's just not decoding it fully.
> 
> 
> 
> Guess 2:
> 
>  >   This is the encoded buffer for this Parameter.
>  >   04 0F 16 0D 39 30 31 20  43 6F 6C 64 20 42 6F 6F 74
> 
> 04-0F should be the tag-len for the OCTET STRING.  0F is
> the correct len.  04 appears to be an incorrect or paritial
> tag.  The tag should be 0x8004 before encoding.  0x8000
> comes from it being a context specific class (not universal).
> The 0x8004 gets encoded into a multibyte form and comes out
> 
>     11 04 0f 16 0d 39 ...
> 
> -troy

On review, my second guess is wrong. 04-0F is the correct
tag-len for the octet string.  It is not a context specific
class.

The context specific class is the Value level which requires
another tag-len encoding.  So the whole scReason would be

	a4 11 04 0f 16 0d 39 ...

-troy

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To: ??? <yxb@cpit.com.cn>, megaco@ietf.org
Subject: RE: [Megaco] question about disconnection message from MGW
Date: Wed, 11 Feb 2004 13:31:00 -0500
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This would all depend upon what the MGC is trying to accomplish.  How the
MGC would use an audit depends heavily upon what function it performs.

Note that there are no requirements as to when or how audits are performed.
Audits are a tool to be used as appropriate by an implementation.

Kevin 
________________________________

	From: yxb@cpit.com.cn [mailto:yxb@cpit.com.cn] 
	Sent: Wednesday, February 11, 2004 3:28 AM
	To: megaco@ietf.org
	Subject: [Megaco] question about disconnection message from MGW
	
	
	Hi,all
	if MGC receives a message svc.req(ROOT,Method=Disconnection) ,
	I am not sure if MGC should sends audit command after svc.reply,
	and if MGC sends audit to MGW, how MGC should use audit.reply,
	that is what should MGC deal with the reply message. Thanks a lot!
	                                   Simba


_______________________________________________
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Megaco@ietf.org
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From: "Kevin Boyle" <kboyle@nortelnetworks.com>
To: ??? <yxb@cpit.com.cn>, megaco@ietf.org
Subject: RE: [Megaco] question about disconnection message from MGW
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This would all depend upon what the MGC is trying to accomplish.  How the
MGC would use an audit depends heavily upon what function it performs.

Note that there are no requirements as to when or how audits are performed.
Audits are a tool to be used as appropriate by an implementation.

Kevin 
________________________________

	From: yxb@cpit.com.cn [mailto:yxb@cpit.com.cn] 
	Sent: Wednesday, February 11, 2004 3:28 AM
	To: megaco@ietf.org
	Subject: [Megaco] question about disconnection message from MGW
	
	
	Hi,all
	if MGC receives a message svc.req(ROOT,Method=Disconnection) ,
	I am not sure if MGC should sends audit command after svc.reply,
	and if MGC sends audit to MGW, how MGC should use audit.reply,
	that is what should MGC deal with the reply message. Thanks a lot!
	                                   Simba


_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco



From megaco-admin@ietf.org  Wed Feb 11 20:06:33 2004
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Date: Thu, 12 Feb 2004 10:06:05 +0800
From: Zhao Bo <zbo@huawei.com>
Subject: Re: [Megaco] question about disconnection message from MGW
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QyBkZWFsIHdpdGggdGhlIHJlcGx5IG1lc3NhZ2UuIFRoYW5rcyBhIGxvdCENCj4gICAgICAgICAg
ICAgICAgICAgICAgICAgICAgICAgICAgICBTaW1iYQ0KPiANCj4gMXLoiYpYWGkgeteuCG0/IDAg
J34gZmZYKSAoDQo=

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From megaco-admin@ietf.org  Thu Feb 12 13:45:39 2004
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From: "Kevin Boyle" <kboyle@nortelnetworks.com>
To: ??? <yxb@cpit.com.cn>, megaco@ietf.org
Subject: RE: [Megaco] question about disconnection message from MGW
Date: Thu, 12 Feb 2004 13:42:22 -0500
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I would like to point out that the callflows document is not a standard, and
only provides examples of one possible way to achieve certain functionality.
Your implementation may differ based upon the functionality it is trying to
achieve.  In fact, I believe the callflows document is expired.

The spec does not mandates audits or any particular handling of audit
responses.  That would be a detail to be resolved by your implementation.
If your implementation needs to perform audits, then that should be taken
into account during its design.

Kevin

-----Original Message-----
From: yxb@cpit.com.cn [mailto:yxb@cpit.com.cn] 
Sent: Wednesday, February 11, 2004 8:02 PM
To: Boyle, Kevin [NCRTP:3Z40:EXCH]; megaco@ietf.org
Subject: Re: [Megaco] question about disconnection message from MGW


Thank for your reply, but if MGW send Disconnection indication to MGC, which
means MGW disconnected from MGC just now, now MGW restores connection with
MGC, then maybe state of the MGW  is different from what MGC regarded , so
MGC need audit MGW to sychornize with it.  All above can be found in the
document: draft-ietf-megaco-callflows-02.txt,
which reads as below:

The MG issues the disconnection method of Service Change when it lost the
communication with MGC and later regains it. The MGC normally generates an
Audit message to assess the state of the terminations before and after the
disconnection. The Audit command enables MGC to synchronize its state with
the MG's state.


Though it is a draft, but I think it is reasonable. What about your opinion?
Thanks for your reply again!

-----原始邮件-----
发件人: Kevin Boyle [mailto:kboyle@nortelnetworks.com]
发送时间: 2004年2月12日 2:31
收件人: ÑîÏè²¨; megaco@ietf.org
Title: RE: [Megaco] question about disconnection message from MGW


This would all depend upon what the MGC is trying to accomplish.  How the
MGC would use an audit depends heavily upon what function it performs.

Note that there are no requirements as to when or how audits are performed.
Audits are a tool to be used as appropriate by an implementation.

Kevin
________________________________

	From: yxb@cpit.com.cn [mailto:yxb@cpit.com.cn] 
	Sent: Wednesday, February 11, 2004 3:28 AM
	To: megaco@ietf.org
	Subject: [Megaco] question about disconnection message from MGW
	
	
	Hi,all
	if MGC receives a message svc.req(ROOT,Method=Disconnection) ,
	I am not sure if MGC should sends audit command after svc.reply,
	and if MGC sends audit to MGW, how MGC should use audit.reply,
	that is what should MGC deal with the reply message. Thanks a lot!
	                                   Simba


_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco


From megaco-admin@ietf.org  Thu Feb 12 13:46:30 2004
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From: "Kevin Boyle" <kboyle@nortelnetworks.com>
To: Zhao Bo <zbo@huawei.com>, ??? <yxb@cpit.com.cn>
Cc: megaco@ietf.org
Subject: RE: [Megaco] question about disconnection message from MGW
Date: Thu, 12 Feb 2004 13:43:16 -0500
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Again, the MGC MAY wish to audit.  There is no requirement.  Whether the MGC
audits or not is determined by the implementation of the MGC.

Kevin 

-----Original Message-----
From: Zhao Bo [mailto:zbo@huawei.com] 
Sent: Wednesday, February 11, 2004 9:06 PM
To: ???
Cc: megaco@ietf.org
Subject: Re: [Megaco] question about disconnection message from MGW

Hi, please refer to section 7.28 of H.248.1, description of
ServiceChangeMethod "Disconnected":

Disconnected: always applied with the Root TerminationID, indicates that the
MG lost communication with the MGC, but it was subsequently restored to the
same MGC (possibly after trying other MGCs on a pre-provisioned list). Since
MG state may have changed, the MGC may wish to use the Audit command to
resynchronize its state with the MG's.

----- Original Message -----
From: "杨先波" <yxb@cpit.com.cn>
To: "Kevin Boyle" <kboyle@nortelnetworks.com>; <megaco@ietf.org>
Sent: Thursday, February 12, 2004 9:02 AM
Subject: Re: [Megaco] question about disconnection message from MGW


> 
> Thank for your reply, but if MGW send Disconnection indication to MGC,
which means
> MGW disconnected from MGC just now, now MGW restores connection with MGC,
then
> maybe state of the MGW  is different from what MGC regarded , so MGC need
audit MGW
> to sychornize with it.  All above can be found in the document:
draft-ietf-megaco-callflows-02.txt,
> which reads as below:
> 
> The MG issues the disconnection method of Service Change when it lost
> the communication with MGC and later regains it. The MGC normally
> generates an Audit message to assess the state of the terminations
> before and after the disconnection. The Audit command enables MGC to
> synchronize its state with the MG's state.
> 
> 
> Though it is a draft, but I think it is reasonable. What about your
opinion?
> Thanks for your reply again!
> 
> -----原始邮件-----
> 发件人: Kevin Boyle [mailto:kboyle@nortelnetworks.com]
> 发送时间: 2004年2月12日 2:31
> 收件人: ÑîÏè²¨; megaco@ietf.org
> Title: RE: [Megaco] question about disconnection message from MGW
> 
> 
> This would all depend upon what the MGC is trying to accomplish.  How the
> MGC would use an audit depends heavily upon what function it performs.
> 
> Note that there are no requirements as to when or how audits are
performed.
> Audits are a tool to be used as appropriate by an implementation.
> 
> Kevin 
> ________________________________
> 
> From: yxb@cpit.com.cn [mailto:yxb@cpit.com.cn] 
> Sent: Wednesday, February 11, 2004 3:28 AM
> To: megaco@ietf.org
> Subject: [Megaco] question about disconnection message from MGW
> 
> 
> Hi,all
> if MGC receives a message svc.req(ROOT,Method=Disconnection) ,
> I am not sure if MGC should sends audit command after svc.reply,
> and if MGC sends audit to MGW, how MGC should use audit.reply,
> that is what should MGC deal with the reply message. Thanks a lot!
>                                    Simba
> 
> 1r艊XXi z׮m? 0 '~ ffX) (1r剚XXǠi"z敃m젶?0Ā'~ffX)í¬€(

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From: "Kevin Boyle" <kboyle@nortelnetworks.com>
To: ??? <yxb@cpit.com.cn>, megaco@ietf.org
Subject: RE: [Megaco] question about disconnection message from MGW
Date: Thu, 12 Feb 2004 13:42:22 -0500
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I would like to point out that the callflows document is not a standard, and
only provides examples of one possible way to achieve certain functionality.
Your implementation may differ based upon the functionality it is trying to
achieve.  In fact, I believe the callflows document is expired.

The spec does not mandates audits or any particular handling of audit
responses.  That would be a detail to be resolved by your implementation.
If your implementation needs to perform audits, then that should be taken
into account during its design.

Kevin

-----Original Message-----
From: yxb@cpit.com.cn [mailto:yxb@cpit.com.cn] 
Sent: Wednesday, February 11, 2004 8:02 PM
To: Boyle, Kevin [NCRTP:3Z40:EXCH]; megaco@ietf.org
Subject: Re: [Megaco] question about disconnection message from MGW


Thank for your reply, but if MGW send Disconnection indication to MGC, which
means MGW disconnected from MGC just now, now MGW restores connection with
MGC, then maybe state of the MGW  is different from what MGC regarded , so
MGC need audit MGW to sychornize with it.  All above can be found in the
document: draft-ietf-megaco-callflows-02.txt,
which reads as below:

The MG issues the disconnection method of Service Change when it lost the
communication with MGC and later regains it. The MGC normally generates an
Audit message to assess the state of the terminations before and after the
disconnection. The Audit command enables MGC to synchronize its state with
the MG's state.


Though it is a draft, but I think it is reasonable. What about your opinion?
Thanks for your reply again!

-----原始邮件-----
发件人: Kevin Boyle [mailto:kboyle@nortelnetworks.com]
发送时间: 2004年2月12日 2:31
收件人: ÑîÏè²¨; megaco@ietf.org
Title: RE: [Megaco] question about disconnection message from MGW


This would all depend upon what the MGC is trying to accomplish.  How the
MGC would use an audit depends heavily upon what function it performs.

Note that there are no requirements as to when or how audits are performed.
Audits are a tool to be used as appropriate by an implementation.

Kevin
________________________________

	From: yxb@cpit.com.cn [mailto:yxb@cpit.com.cn] 
	Sent: Wednesday, February 11, 2004 3:28 AM
	To: megaco@ietf.org
	Subject: [Megaco] question about disconnection message from MGW
	
	
	Hi,all
	if MGC receives a message svc.req(ROOT,Method=Disconnection) ,
	I am not sure if MGC should sends audit command after svc.reply,
	and if MGC sends audit to MGW, how MGC should use audit.reply,
	that is what should MGC deal with the reply message. Thanks a lot!
	                                   Simba


_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco



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From: "Kevin Boyle" <kboyle@nortelnetworks.com>
To: Zhao Bo <zbo@huawei.com>, ??? <yxb@cpit.com.cn>
Cc: megaco@ietf.org
Subject: RE: [Megaco] question about disconnection message from MGW
Date: Thu, 12 Feb 2004 13:43:16 -0500
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Again, the MGC MAY wish to audit.  There is no requirement.  Whether the MGC
audits or not is determined by the implementation of the MGC.

Kevin 

-----Original Message-----
From: Zhao Bo [mailto:zbo@huawei.com] 
Sent: Wednesday, February 11, 2004 9:06 PM
To: ???
Cc: megaco@ietf.org
Subject: Re: [Megaco] question about disconnection message from MGW

Hi, please refer to section 7.28 of H.248.1, description of
ServiceChangeMethod "Disconnected":

Disconnected: always applied with the Root TerminationID, indicates that the
MG lost communication with the MGC, but it was subsequently restored to the
same MGC (possibly after trying other MGCs on a pre-provisioned list). Since
MG state may have changed, the MGC may wish to use the Audit command to
resynchronize its state with the MG's.

----- Original Message -----
From: "杨先波" <yxb@cpit.com.cn>
To: "Kevin Boyle" <kboyle@nortelnetworks.com>; <megaco@ietf.org>
Sent: Thursday, February 12, 2004 9:02 AM
Subject: Re: [Megaco] question about disconnection message from MGW


> 
> Thank for your reply, but if MGW send Disconnection indication to MGC,
which means
> MGW disconnected from MGC just now, now MGW restores connection with MGC,
then
> maybe state of the MGW  is different from what MGC regarded , so MGC need
audit MGW
> to sychornize with it.  All above can be found in the document:
draft-ietf-megaco-callflows-02.txt,
> which reads as below:
> 
> The MG issues the disconnection method of Service Change when it lost
> the communication with MGC and later regains it. The MGC normally
> generates an Audit message to assess the state of the terminations
> before and after the disconnection. The Audit command enables MGC to
> synchronize its state with the MG's state.
> 
> 
> Though it is a draft, but I think it is reasonable. What about your
opinion?
> Thanks for your reply again!
> 
> -----原始邮件-----
> 发件人: Kevin Boyle [mailto:kboyle@nortelnetworks.com]
> 发送时间: 2004年2月12日 2:31
> 收件人: ÑîÏè²¨; megaco@ietf.org
> Title: RE: [Megaco] question about disconnection message from MGW
> 
> 
> This would all depend upon what the MGC is trying to accomplish.  How the
> MGC would use an audit depends heavily upon what function it performs.
> 
> Note that there are no requirements as to when or how audits are
performed.
> Audits are a tool to be used as appropriate by an implementation.
> 
> Kevin 
> ________________________________
> 
> From: yxb@cpit.com.cn [mailto:yxb@cpit.com.cn] 
> Sent: Wednesday, February 11, 2004 3:28 AM
> To: megaco@ietf.org
> Subject: [Megaco] question about disconnection message from MGW
> 
> 
> Hi,all
> if MGC receives a message svc.req(ROOT,Method=Disconnection) ,
> I am not sure if MGC should sends audit command after svc.reply,
> and if MGC sends audit to MGW, how MGC should use audit.reply,
> that is what should MGC deal with the reply message. Thanks a lot!
>                                    Simba
> 
> 1r艊XXi z׮m? 0 '~ ffX) (1r剚XXǠi"z敃m젶?0Ā'~ffX)í¬€(

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From megaco-admin@ietf.org  Mon Feb 16 08:45:35 2004
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Question,

Will both of these packages co-exist?
If not what is the timeframe in which this issue will be resolved?

Thx,
Carl

Carl Rutter
Telica, Inc.
Building G, Suite 100
734 Forest Street
Marlboro, MA 01752
Email crutter@telica.com
Voice 508-480-0909 x8178
Fax 508-480-0922 
www.telica.com




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Question,

Will both of these packages co-exist?
If not what is the timeframe in which this issue will be resolved?

Thx,
Carl

Carl Rutter
Telica, Inc.
Building G, Suite 100
734 Forest Street
Marlboro, MA 01752
Email crutter@telica.com
Voice 508-480-0909 x8178
Fax 508-480-0922 
www.telica.com




_______________________________________________
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From megaco-admin@ietf.org  Mon Feb 16 10:43:30 2004
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I am wondering how I should implement three-people conference calls
when the people are located on different MGs.

If the communication between the MGs and the end-users don't cost
anything (a handset connected directly to the MG), it looks like it
makes sense to establish three bidirectional RTP streams to minimize
latency. However, if those communications cost money (outgoing POTS
communications), one of the MGs should be the one implementing the
conferencing service.

How do you typically do?

  Sam
-- 
Samuel Tardieu -- sam@rfc1149.net -- http://www.rfc1149.net/sam


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Subject: [Megaco] Conference call
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I am wondering how I should implement three-people conference calls
when the people are located on different MGs.

If the communication between the MGs and the end-users don't cost
anything (a handset connected directly to the MG), it looks like it
makes sense to establish three bidirectional RTP streams to minimize
latency. However, if those communications cost money (outgoing POTS
communications), one of the MGs should be the one implementing the
conferencing service.

How do you typically do?

  Sam
-- 
Samuel Tardieu -- sam@rfc1149.net -- http://www.rfc1149.net/sam


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<P>=0AHi All,<BR>=0A&nbsp;  I have few questions. While I was going through=
 Enhanced Alerting Package, I came accross the signal parameter Tone Direct=
ion. As per the document it indicates the direction the signal shall procee=
d w.r.t. to the center of the context. What does this context refer to ? Is=
 it the context created during the add command ? Can anyone explain me clea=
rly?<BR>=0A<BR>=0A&nbsp;  My other question is regarding BER encoding. In r=
fc3525 does not mention which Type class we need to use.I am using Context =
specific class. But some other implementors are using Universal type. Is my=
 decoder should able to decode&nbsp; both classes?<BR>=0A&nbsp; <BR>=0A&nbs=
p;  I saw the differences between rfc3015 and rfc3525. Some mandatory param=
eters in rfc3015 are made optional in 3525. Both are defined with version 1=
. How do they communicate each other as MG with 3015 expects some mandatory=
 parameter?<BR>=0A<BR>=0AThanks,<BR>=0AKumar=0A</P>=0A<br><br>=0A<A target=
=3D"_blank" HREF=3D"http://clients.rediff.com/signature/track_sig.asp"><IMG=
 SRC=3D"http://ads.rediff.com/RealMedia/ads/adstream_nx.cgi/www.rediffmail.=
com/inbox.htm@Bottom" BORDER=3D0 VSPACE=3D0 HSPACE=3D0 HEIGHT=3D74 WIDTH=3D=
496></a>=0A
--Next_1076990792---0-203.199.83.248-27572
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Hi All,=0A   I have few questions. While I was going through Enhanced Alert=
ing Package, I came accross the signal parameter Tone Direction. As per the=
 document it indicates the direction the signal shall proceed w.r.t. to the=
 center of the context. What does this context refer to ? Is it the context=
 created during the add command ? Can anyone explain me clearly?=0A=0A   My=
 other question is regarding BER encoding. In rfc3525 does not mention whic=
h Type class we need to use.I am using Context specific class. But some oth=
er implementors are using Universal type. Is my decoder should able to deco=
de  both classes?=0A  =0A   I saw the differences between rfc3015 and rfc35=
25. Some mandatory parameters in rfc3015 are made optional in 3525. Both ar=
e defined with version 1. How do they communicate each other as MG with 301=
5 expects some mandatory parameter?=0A=0AThanks,=0AKumar
--Next_1076990792---0-203.199.83.248-27572--


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<P>=0AHi All,<BR>=0A&nbsp;  I have few questions. While I was going through=
 Enhanced Alerting Package, I came accross the signal parameter Tone Direct=
ion. As per the document it indicates the direction the signal shall procee=
d w.r.t. to the center of the context. What does this context refer to ? Is=
 it the context created during the add command ? Can anyone explain me clea=
rly?<BR>=0A<BR>=0A&nbsp;  My other question is regarding BER encoding. In r=
fc3525 does not mention which Type class we need to use.I am using Context =
specific class. But some other implementors are using Universal type. Is my=
 decoder should able to decode&nbsp; both classes?<BR>=0A&nbsp; <BR>=0A&nbs=
p;  I saw the differences between rfc3015 and rfc3525. Some mandatory param=
eters in rfc3015 are made optional in 3525. Both are defined with version 1=
. How do they communicate each other as MG with 3015 expects some mandatory=
 parameter?<BR>=0A<BR>=0AThanks,<BR>=0AKumar=0A</P>=0A<br><br>=0A<A target=
=3D"_blank" HREF=3D"http://clients.rediff.com/signature/track_sig.asp"><IMG=
 SRC=3D"http://ads.rediff.com/RealMedia/ads/adstream_nx.cgi/www.rediffmail.=
com/inbox.htm@Bottom" BORDER=3D0 VSPACE=3D0 HSPACE=3D0 HEIGHT=3D74 WIDTH=3D=
496></a>=0A
--Next_1076990792---0-203.199.83.248-27572
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Hi All,=0A   I have few questions. While I was going through Enhanced Alert=
ing Package, I came accross the signal parameter Tone Direction. As per the=
 document it indicates the direction the signal shall proceed w.r.t. to the=
 center of the context. What does this context refer to ? Is it the context=
 created during the add command ? Can anyone explain me clearly?=0A=0A   My=
 other question is regarding BER encoding. In rfc3525 does not mention whic=
h Type class we need to use.I am using Context specific class. But some oth=
er implementors are using Universal type. Is my decoder should able to deco=
de  both classes?=0A  =0A   I saw the differences between rfc3015 and rfc35=
25. Some mandatory parameters in rfc3015 are made optional in 3525. Both ar=
e defined with version 1. How do they communicate each other as MG with 301=
5 expects some mandatory parameter?=0A=0AThanks,=0AKumar
--Next_1076990792---0-203.199.83.248-27572--


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From megaco-admin@ietf.org  Tue Feb 17 00:12:30 2004
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--------------E6EB7A775EF6179453036518
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hi,
I want to start implementing megaco for 3g MSC.
I've read basic megaco rfc 3525 & packages.
What other i need to study for implementing it?
What can be the implementation strategy?
Can u tell me the state machine (Identified states of mgc & mgw)?
Is here any implementation document on internet for it?
We want to develop it inhouse.

Thanks
Regards
Manish


--
Things work out best for those who make the best use of it.



--------------E6EB7A775EF6179453036518
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<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
hi,
<br>I want to start implementing megaco for 3g MSC.
<br>I've read basic megaco rfc 3525 &amp; packages.
<br>What other i need to study for implementing it?
<br>What can be the implementation strategy?
<br>Can u tell me the state machine (Identified states of mgc &amp; mgw)?
<br>Is here any implementation document on internet for it?
<br>We want to develop it inhouse.
<p>Thanks
<br>Regards
<br>Manish
<br>&nbsp;
<pre></pre>

<pre>--&nbsp;
Things work out best for those who make the best use of it.</pre>
&nbsp;</html>

--------------E6EB7A775EF6179453036518--



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From exim@www1.ietf.org  Tue Feb 17 00:14:17 2004
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From: manish rathi <rathi@cdotd.ernet.in>
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hi,
I want to start implementing megaco for 3g MSC.
I've read basic megaco rfc 3525 & packages.
What other i need to study for implementing it?
What can be the implementation strategy?
Can u tell me the state machine (Identified states of mgc & mgw)?
Is here any implementation document on internet for it?
We want to develop it inhouse.

Thanks
Regards
Manish


--
Things work out best for those who make the best use of it.



--------------E6EB7A775EF6179453036518
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<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
hi,
<br>I want to start implementing megaco for 3g MSC.
<br>I've read basic megaco rfc 3525 &amp; packages.
<br>What other i need to study for implementing it?
<br>What can be the implementation strategy?
<br>Can u tell me the state machine (Identified states of mgc &amp; mgw)?
<br>Is here any implementation document on internet for it?
<br>We want to develop it inhouse.
<p>Thanks
<br>Regards
<br>Manish
<br>&nbsp;
<pre></pre>

<pre>--&nbsp;
Things work out best for those who make the best use of it.</pre>
&nbsp;</html>

--------------E6EB7A775EF6179453036518--



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From megaco-admin@ietf.org  Tue Feb 17 09:11:34 2004
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From: Albrecht.Schwarz@alcatel.de
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Subject: Re: [Megaco] Compelled Signaling - ICASGEN vs ICASC
To: Carl Rutter <crutter@telica.com>
Cc: megaco@ietf.org
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Carl,

work is still in progress on that rather complex subject.
Next Q.3/16 meeting is scheduled in May 2004.

Regards,
Albrecht

ALCATEL



                                                                                                                                                    
                      Carl Rutter                                                                                                                   
                      <crutter@telica.         To:      megaco@ietf.org                                                                             
                      com>                     cc:                                                                                                  
                      Sent by:                 Subject: [Megaco] Compelled Signaling - ICASGEN vs ICASC                                             
                      megaco-admin@iet                                                                                                              
                      f.org                                                                                                                         
                                                                                                                                                    
                                                                                                                                                    
                      16.02.2004 14:42                                                                                                              
                                                                                                                                                    
                                                                                                                                                    




Question,

Will both of these packages co-exist?
If not what is the timeframe in which this issue will be resolved?

Thx,
Carl

Carl Rutter
Telica, Inc.
Building G, Suite 100
734 Forest Street
Marlboro, MA 01752
Email crutter@telica.com
Voice 508-480-0909 x8178
Fax 508-480-0922
www.telica.com




_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco






_______________________________________________
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From exim@www1.ietf.org  Tue Feb 17 09:13:36 2004
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Carl,

work is still in progress on that rather complex subject.
Next Q.3/16 meeting is scheduled in May 2004.

Regards,
Albrecht

ALCATEL



                                                                                                                                                    
                      Carl Rutter                                                                                                                   
                      <crutter@telica.         To:      megaco@ietf.org                                                                             
                      com>                     cc:                                                                                                  
                      Sent by:                 Subject: [Megaco] Compelled Signaling - ICASGEN vs ICASC                                             
                      megaco-admin@iet                                                                                                              
                      f.org                                                                                                                         
                                                                                                                                                    
                                                                                                                                                    
                      16.02.2004 14:42                                                                                                              
                                                                                                                                                    
                                                                                                                                                    




Question,

Will both of these packages co-exist?
If not what is the timeframe in which this issue will be resolved?

Thx,
Carl

Carl Rutter
Telica, Inc.
Building G, Suite 100
734 Forest Street
Marlboro, MA 01752
Email crutter@telica.com
Voice 508-480-0909 x8178
Fax 508-480-0922
www.telica.com




_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco






_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco



From megaco-admin@ietf.org  Tue Feb 17 10:45:33 2004
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Thread-Topic: MG reconfiguration
Thread-Index: AcP1bFOtcDRTyLkAQYKuY8SH7VUKoA==
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I am wondering whether there is common practice to notify the MGC about
MG configuration changes,

e.g. if several physical terminations are added/deleted on a MG by
Element Management is there a common way to notify the MGC about the
availability/removal of these terminations?

=20

Regards

B. Spielmann

=20

=20


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<p class=3DMsoNormal><i><font size=3D2 face=3DArial><span lang=3DEN-GB
style=3D'font-size:10.0pt;font-style:normal'>I am wondering whether =
there is common
practice to notify the MGC about MG configuration =
changes,</span></font></i></p>

<p class=3DMsoNormal><i><font size=3D2 face=3DArial><span lang=3DEN-GB
style=3D'font-size:10.0pt;font-style:normal'>e.g. if several physical =
terminations
are added/deleted on a MG by Element Management is there a common way to =
notify
the MGC about the availability/removal of these =
terminations?</span></font></i></p>

<p class=3DMsoNormal><i><font size=3D2 face=3DArial><span lang=3DEN-GB
style=3D'font-size:10.0pt;font-style:normal'>&nbsp;</span></font></i></p>=


<p class=3DMsoNormal><i><font size=3D2 face=3DArial><span lang=3DEN-GB
style=3D'font-size:10.0pt;font-style:normal'>Regards</span></font></i></p=
>

<p class=3DMsoNormal><i><font size=3D2 face=3DArial><span lang=3DEN-GB
style=3D'font-size:10.0pt;font-style:normal'>B. =
Spielmann</span></font></i></p>

<p class=3DMsoNormal><i><font size=3D2 face=3DArial><span lang=3DEN-GB
style=3D'font-size:10.0pt;font-style:normal'>&nbsp;</span></font></i></p>=


<p class=3DMsoAutoSig><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>&nbsp;</span></font></p>

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Thread-Topic: MG reconfiguration
Thread-Index: AcP1bFOtcDRTyLkAQYKuY8SH7VUKoA==
From: "Spielmann, Beat" <Beat.Spielmann@keymile.com>
To: <megaco@ietf.org>
Subject: [Megaco] MG reconfiguration
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I am wondering whether there is common practice to notify the MGC about
MG configuration changes,

e.g. if several physical terminations are added/deleted on a MG by
Element Management is there a common way to notify the MGC about the
availability/removal of these terminations?

=20

Regards

B. Spielmann

=20

=20


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<p class=3DMsoNormal><i><font size=3D2 face=3DArial><span lang=3DEN-GB
style=3D'font-size:10.0pt;font-style:normal'>I am wondering whether =
there is common
practice to notify the MGC about MG configuration =
changes,</span></font></i></p>

<p class=3DMsoNormal><i><font size=3D2 face=3DArial><span lang=3DEN-GB
style=3D'font-size:10.0pt;font-style:normal'>e.g. if several physical =
terminations
are added/deleted on a MG by Element Management is there a common way to =
notify
the MGC about the availability/removal of these =
terminations?</span></font></i></p>

<p class=3DMsoNormal><i><font size=3D2 face=3DArial><span lang=3DEN-GB
style=3D'font-size:10.0pt;font-style:normal'>&nbsp;</span></font></i></p>=


<p class=3DMsoNormal><i><font size=3D2 face=3DArial><span lang=3DEN-GB
style=3D'font-size:10.0pt;font-style:normal'>Regards</span></font></i></p=
>

<p class=3DMsoNormal><i><font size=3D2 face=3DArial><span lang=3DEN-GB
style=3D'font-size:10.0pt;font-style:normal'>B. =
Spielmann</span></font></i></p>

<p class=3DMsoNormal><i><font size=3D2 face=3DArial><span lang=3DEN-GB
style=3D'font-size:10.0pt;font-style:normal'>&nbsp;</span></font></i></p>=


<p class=3DMsoAutoSig><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>&nbsp;</span></font></p>

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From megaco-admin@ietf.org  Tue Feb 17 19:57:32 2004
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Subject: Re: [Megaco] MG reconfiguration
Date: Wed, 18 Feb 2004 08:56:18 +0800
Message-ID: <006A9E7E02D21C45AC3CB741AEBF844EAE5B1F@mail.putian.com>
Thread-Topic: Megaco digest, Vol 1 #1089 - 4 msgs
Thread-Index: AcP1d/Y7zMkxdOxUTrqtfOmd+RsdZgAQOTjw
From: "???" <yxb@cpit.com.cn>
To: <megaco@ietf.org>
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 MG will send SvcChg.req command to MGC indicating Service restore when =
terminations are added
and send SvcChg.req command to MGC indicating service cancel when =
terminations are removed.




Message: 4
Date: Tue, 17 Feb 2004 16:40:10 +0100
From: "Spielmann, Beat" <Beat.Spielmann@keymile.com>
To: <megaco@ietf.org>
Subject: [Megaco] MG reconfiguration

This is a multi-part message in MIME format.

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I am wondering whether there is common practice to notify the MGC about
MG configuration changes,

e.g. if several physical terminations are added/deleted on a MG by
Element Management is there a common way to notify the MGC about the
availability/removal of these terminations?

=3D20

Regards

B. Spielmann



_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco


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Subject: Re: [Megaco] MG reconfiguration
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 MG will send SvcChg.req command to MGC indicating Service restore when =
terminations are added
and send SvcChg.req command to MGC indicating service cancel when =
terminations are removed.




Message: 4
Date: Tue, 17 Feb 2004 16:40:10 +0100
From: "Spielmann, Beat" <Beat.Spielmann@keymile.com>
To: <megaco@ietf.org>
Subject: [Megaco] MG reconfiguration

This is a multi-part message in MIME format.

------_=3D_NextPart_001_01C3F56C.53B4CE38
Content-Type: text/plain;
	charset=3D"us-ascii"
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I am wondering whether there is common practice to notify the MGC about
MG configuration changes,

e.g. if several physical terminations are added/deleted on a MG by
Element Management is there a common way to notify the MGC about the
availability/removal of these terminations?

=3D20

Regards

B. Spielmann



_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco



From megaco-admin@ietf.org  Wed Feb 18 23:06:38 2004
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 Can anybody tell me how to use network failure Events (with Notify
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From megaco-admin@ietf.org  Mon Feb 23 04:09:45 2004
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Date: Mon, 23 Feb 2004 17:05:01 +0800
From: Zhao Bo <zbo@huawei.com>
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Subject: [Megaco] Questions about H.248.17 "line test packages"
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Could anyone kindly answer the following questions (I can't find the author's email address in H.248.17 text).

1. Section 1 "Scope" says:
"The detailing of results that are reported (e.g. events and statistics), as well as the timing and mechanisms used for
transmitting such records from the MG to the MGC"
Why? If a test is initiated by MGC, why not define a protocol to send the measuring result back to MGC?

2.If we have two switch connected with temination T1 and T2
    SW1--T1-------T2--SW2
Shall the H.248 signal be apllied to T1 and T2, or some extra termination, for example T3 or T4 in the following scenerio:
T3--SW1--T1-------T2--SW2--T4

3. Section 7.1.1 says:
"ITU-T Rec. O.11 describes test responder behaviour. For a description of this behaviour see
clause 9."
But either O.11 or H.247.17 text has a clause 9?

Best regards

Zhao Bo

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Could anyone kindly answer the following questions (I can't find the author's email address in H.248.17 text).

1. Section 1 "Scope" says:
"The detailing of results that are reported (e.g. events and statistics), as well as the timing and mechanisms used for
transmitting such records from the MG to the MGC"
Why? If a test is initiated by MGC, why not define a protocol to send the measuring result back to MGC?

2.If we have two switch connected with temination T1 and T2
    SW1--T1-------T2--SW2
Shall the H.248 signal be apllied to T1 and T2, or some extra termination, for example T3 or T4 in the following scenerio:
T3--SW1--T1-------T2--SW2--T4

3. Section 7.1.1 says:
"ITU-T Rec. O.11 describes test responder behaviour. For a description of this behaviour see
clause 9."
But either O.11 or H.247.17 text has a clause 9?

Best regards

Zhao Bo

*****************************************************************
This e-mail and its attachments contain confidential information from HUAWEI, which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction, or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender by phone or email immediately and delete it!
*****************************************************************

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From megaco-admin@ietf.org  Mon Feb 23 04:30:32 2004
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Subject: [Megaco] Questions about H.248.17 "line test packages"(upgrade,sorry,
 my poor English)
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Could anyone kindly answer the following questions (I can't find the author's email address in H.248.17 text).

1. Section 1 "Scope" says:
"The detailing of results that are reported (e.g. events and statistics), as well as the timing and mechanisms used for
transmitting such records from the MG to the MGC"
Why? If a test is initiated by MGC, why not define a protocol to send the measuring result back to MGC?

2.If we have two switch connected with temination T1 and T2
    SW1--T1-------T2--SW2
Shall the H.248 signal be apllied to T1 and T2, or some extra termination, for example T3 or T4 in the following scenerio:
T3--SW1--T1-------T2--SW2--T4

3. Section 7.1.1 says:
"ITU-T Rec. O.11 describes test responder behaviour. For a description of this behaviour see
clause 9."
But neither O.11 nor H.247.17 text has a clause 9?

Best regards

Zhao Bo


Zhao Bo

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From: Zhao Bo <zbo@huawei.com>
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Subject: [Megaco] Questions about H.248.17 "line test packages"(upgrade,sorry,
 my poor English)
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Could anyone kindly answer the following questions (I can't find the author's email address in H.248.17 text).

1. Section 1 "Scope" says:
"The detailing of results that are reported (e.g. events and statistics), as well as the timing and mechanisms used for
transmitting such records from the MG to the MGC"
Why? If a test is initiated by MGC, why not define a protocol to send the measuring result back to MGC?

2.If we have two switch connected with temination T1 and T2
    SW1--T1-------T2--SW2
Shall the H.248 signal be apllied to T1 and T2, or some extra termination, for example T3 or T4 in the following scenerio:
T3--SW1--T1-------T2--SW2--T4

3. Section 7.1.1 says:
"ITU-T Rec. O.11 describes test responder behaviour. For a description of this behaviour see
clause 9."
But neither O.11 nor H.247.17 text has a clause 9?

Best regards

Zhao Bo


Zhao Bo

*****************************************************************
This e-mail and its attachments contain confidential information from HUAWEI, which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction, or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender by phone or email immediately and delete it!
*****************************************************************

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From megaco-admin@ietf.org  Mon Feb 23 13:34:30 2004
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Hi All,
The present Protocol spec doesn't address the issue of mobility of users
connected to the residential gateways. Are there any proposals for
registration of endpoints when they change their physical location (Yet
retaining their domain name,etc).  Similar to the REGISTER message in SIP. 
 
Regards
Madhubabu

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<META content="MSHTML 6.00.2800.1400" name=GENERATOR></HEAD>
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<DIV><SPAN class=328332102-21022004><FONT face=Arial size=2>Hi 
All,</FONT></SPAN></DIV>
<DIV><SPAN class=328332102-21022004><FONT face=Arial size=2>The present Protocol 
spec doesn't address the issue of mobility of users connected to the residential 
gateways. Are there any proposals for registration of endpoints when they change 
their physical location (Yet retaining their domain name,etc).&nbsp; Similar to 
the REGISTER message in SIP. </FONT></SPAN></DIV>
<DIV><SPAN class=328332102-21022004><FONT face=Arial 
size=2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=328332102-21022004><FONT face=Arial 
size=2>Regards</FONT></SPAN></DIV>
<DIV><SPAN class=328332102-21022004><FONT face=Arial 
size=2>Madhubabu</FONT></SPAN></DIV></BODY></HTML>

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Hi All,
The present Protocol spec doesn't address the issue of mobility of users
connected to the residential gateways. Are there any proposals for
registration of endpoints when they change their physical location (Yet
retaining their domain name,etc).  Similar to the REGISTER message in SIP. 
 
Regards
Madhubabu

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<DIV><SPAN class=328332102-21022004><FONT face=Arial size=2>Hi 
All,</FONT></SPAN></DIV>
<DIV><SPAN class=328332102-21022004><FONT face=Arial size=2>The present Protocol 
spec doesn't address the issue of mobility of users connected to the residential 
gateways. Are there any proposals for registration of endpoints when they change 
their physical location (Yet retaining their domain name,etc).&nbsp; Similar to 
the REGISTER message in SIP. </FONT></SPAN></DIV>
<DIV><SPAN class=328332102-21022004><FONT face=Arial 
size=2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=328332102-21022004><FONT face=Arial 
size=2>Regards</FONT></SPAN></DIV>
<DIV><SPAN class=328332102-21022004><FONT face=Arial 
size=2>Madhubabu</FONT></SPAN></DIV></BODY></HTML>

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I would think this contrary to the spirit of Megaco, in that the awareness of 
services resides in the MGC alone and is not reflected in the protocol.

Madhubabu Brahmanapally wrote:

> Hi All,
> The present Protocol spec doesn't address the issue of mobility of users 
> connected to the residential gateways. Are there any proposals for 
> registration of endpoints when they change their physical location (Yet 
> retaining their domain name,etc).  Similar to the REGISTER message in SIP.
>  
> Regards
> Madhubabu

_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco


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I would think this contrary to the spirit of Megaco, in that the awareness of 
services resides in the MGC alone and is not reflected in the protocol.

Madhubabu Brahmanapally wrote:

> Hi All,
> The present Protocol spec doesn't address the issue of mobility of users 
> connected to the residential gateways. Are there any proposals for 
> registration of endpoints when they change their physical location (Yet 
> retaining their domain name,etc).  Similar to the REGISTER message in SIP.
>  
> Regards
> Madhubabu

_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco



From megaco-admin@ietf.org  Mon Feb 23 15:16:31 2004
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From: Madhubabu Brahmanapally <Madhubabu@veraznet.com>
To: "'Tom Taylor'" <taylor@nortelnetworks.com>
Cc: megaco@ietf.org
Subject: RE: [Megaco] Are Megaco subscribers immobile??
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Hi Tom,
Thanks for the reply.

If the protocol doesn't provide any mechanism...everything boils down to
provisioning which defeats the purpose of mobility...Of course the protocol
is not addressing the mobility issue..

But, If new terminations/cards are added...apart from pre-provisioning
shouldn't there be a way so that the GW can scale using the protocol
interface. rather than through proprietary means...


Even now when the serviceChange when generated with "restart", it is assumed
that the terminations are pre-provisioned at the MGC. Then, How does the MGs
scale dynamically. Of course scaling down is not a problem...as the group of
terminations are already known to both entities.


Regards
Madhubabu

-----Original Message-----
From: Tom Taylor [mailto:taylor@nortelnetworks.com]
Sent: Monday, February 23, 2004 10:50 AM
To: Madhubabu Brahmanapally
Cc: megaco@ietf.org
Subject: Re: [Megaco] Are Megaco subscribers immobile??


I would think this contrary to the spirit of Megaco, in that the awareness
of 
services resides in the MGC alone and is not reflected in the protocol.

Madhubabu Brahmanapally wrote:

> Hi All,
> The present Protocol spec doesn't address the issue of mobility of users 
> connected to the residential gateways. Are there any proposals for 
> registration of endpoints when they change their physical location (Yet 
> retaining their domain name,etc).  Similar to the REGISTER message in SIP.
>  
> Regards
> Madhubabu

------_=_NextPart_001_01C3FA49.C4497190
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charset=3Dus-ascii">
<META NAME=3D"Generator" CONTENT=3D"MS Exchange Server version =
5.5.2654.45">
<TITLE>RE: [Megaco] Are Megaco subscribers immobile??</TITLE>
</HEAD>
<BODY>

<P><FONT SIZE=3D2>Hi Tom,</FONT>
<BR><FONT SIZE=3D2>Thanks for the reply.</FONT>
</P>

<P><FONT SIZE=3D2>If the protocol doesn't provide any =
mechanism...everything boils down to provisioning which defeats the =
purpose of mobility...Of course the protocol is not addressing the =
mobility issue..</FONT></P>

<P><FONT SIZE=3D2>But, If new terminations/cards are added...apart from =
pre-provisioning shouldn't there be a way so that the GW can scale =
using the protocol interface. rather than through proprietary =
means...</FONT></P>
<BR>

<P><FONT SIZE=3D2>Even now when the serviceChange when generated with =
&quot;restart&quot;, it is assumed that the terminations are =
pre-provisioned at the MGC. Then, How does the MGs scale dynamically. =
Of course scaling down is not a problem...as the group of terminations =
are already known to both entities.</FONT></P>
<BR>

<P><FONT SIZE=3D2>Regards</FONT>
<BR><FONT SIZE=3D2>Madhubabu</FONT>
</P>

<P><FONT SIZE=3D2>-----Original Message-----</FONT>
<BR><FONT SIZE=3D2>From: Tom Taylor [<A =
HREF=3D"mailto:taylor@nortelnetworks.com">mailto:taylor@nortelnetworks.c=
om</A>]</FONT>
<BR><FONT SIZE=3D2>Sent: Monday, February 23, 2004 10:50 AM</FONT>
<BR><FONT SIZE=3D2>To: Madhubabu Brahmanapally</FONT>
<BR><FONT SIZE=3D2>Cc: megaco@ietf.org</FONT>
<BR><FONT SIZE=3D2>Subject: Re: [Megaco] Are Megaco subscribers =
immobile??</FONT>
</P>
<BR>

<P><FONT SIZE=3D2>I would think this contrary to the spirit of Megaco, =
in that the awareness of </FONT>
<BR><FONT SIZE=3D2>services resides in the MGC alone and is not =
reflected in the protocol.</FONT>
</P>

<P><FONT SIZE=3D2>Madhubabu Brahmanapally wrote:</FONT>
</P>

<P><FONT SIZE=3D2>&gt; Hi All,</FONT>
<BR><FONT SIZE=3D2>&gt; The present Protocol spec doesn't address the =
issue of mobility of users </FONT>
<BR><FONT SIZE=3D2>&gt; connected to the residential gateways. Are =
there any proposals for </FONT>
<BR><FONT SIZE=3D2>&gt; registration of endpoints when they change =
their physical location (Yet </FONT>
<BR><FONT SIZE=3D2>&gt; retaining their domain name,etc).&nbsp; Similar =
to the REGISTER message in SIP.</FONT>
<BR><FONT SIZE=3D2>&gt;&nbsp; </FONT>
<BR><FONT SIZE=3D2>&gt; Regards</FONT>
<BR><FONT SIZE=3D2>&gt; Madhubabu</FONT>
</P>

</BODY>
</HTML>
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From: Madhubabu Brahmanapally <Madhubabu@veraznet.com>
To: "'Tom Taylor'" <taylor@nortelnetworks.com>
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Subject: RE: [Megaco] Are Megaco subscribers immobile??
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Hi Tom,
Thanks for the reply.

If the protocol doesn't provide any mechanism...everything boils down to
provisioning which defeats the purpose of mobility...Of course the protocol
is not addressing the mobility issue..

But, If new terminations/cards are added...apart from pre-provisioning
shouldn't there be a way so that the GW can scale using the protocol
interface. rather than through proprietary means...


Even now when the serviceChange when generated with "restart", it is assumed
that the terminations are pre-provisioned at the MGC. Then, How does the MGs
scale dynamically. Of course scaling down is not a problem...as the group of
terminations are already known to both entities.


Regards
Madhubabu

-----Original Message-----
From: Tom Taylor [mailto:taylor@nortelnetworks.com]
Sent: Monday, February 23, 2004 10:50 AM
To: Madhubabu Brahmanapally
Cc: megaco@ietf.org
Subject: Re: [Megaco] Are Megaco subscribers immobile??


I would think this contrary to the spirit of Megaco, in that the awareness
of 
services resides in the MGC alone and is not reflected in the protocol.

Madhubabu Brahmanapally wrote:

> Hi All,
> The present Protocol spec doesn't address the issue of mobility of users 
> connected to the residential gateways. Are there any proposals for 
> registration of endpoints when they change their physical location (Yet 
> retaining their domain name,etc).  Similar to the REGISTER message in SIP.
>  
> Regards
> Madhubabu

------_=_NextPart_001_01C3FA49.C4497190
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charset=3Dus-ascii">
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5.5.2654.45">
<TITLE>RE: [Megaco] Are Megaco subscribers immobile??</TITLE>
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<BODY>

<P><FONT SIZE=3D2>Hi Tom,</FONT>
<BR><FONT SIZE=3D2>Thanks for the reply.</FONT>
</P>

<P><FONT SIZE=3D2>If the protocol doesn't provide any =
mechanism...everything boils down to provisioning which defeats the =
purpose of mobility...Of course the protocol is not addressing the =
mobility issue..</FONT></P>

<P><FONT SIZE=3D2>But, If new terminations/cards are added...apart from =
pre-provisioning shouldn't there be a way so that the GW can scale =
using the protocol interface. rather than through proprietary =
means...</FONT></P>
<BR>

<P><FONT SIZE=3D2>Even now when the serviceChange when generated with =
&quot;restart&quot;, it is assumed that the terminations are =
pre-provisioned at the MGC. Then, How does the MGs scale dynamically. =
Of course scaling down is not a problem...as the group of terminations =
are already known to both entities.</FONT></P>
<BR>

<P><FONT SIZE=3D2>Regards</FONT>
<BR><FONT SIZE=3D2>Madhubabu</FONT>
</P>

<P><FONT SIZE=3D2>-----Original Message-----</FONT>
<BR><FONT SIZE=3D2>From: Tom Taylor [<A =
HREF=3D"mailto:taylor@nortelnetworks.com">mailto:taylor@nortelnetworks.c=
om</A>]</FONT>
<BR><FONT SIZE=3D2>Sent: Monday, February 23, 2004 10:50 AM</FONT>
<BR><FONT SIZE=3D2>To: Madhubabu Brahmanapally</FONT>
<BR><FONT SIZE=3D2>Cc: megaco@ietf.org</FONT>
<BR><FONT SIZE=3D2>Subject: Re: [Megaco] Are Megaco subscribers =
immobile??</FONT>
</P>
<BR>

<P><FONT SIZE=3D2>I would think this contrary to the spirit of Megaco, =
in that the awareness of </FONT>
<BR><FONT SIZE=3D2>services resides in the MGC alone and is not =
reflected in the protocol.</FONT>
</P>

<P><FONT SIZE=3D2>Madhubabu Brahmanapally wrote:</FONT>
</P>

<P><FONT SIZE=3D2>&gt; Hi All,</FONT>
<BR><FONT SIZE=3D2>&gt; The present Protocol spec doesn't address the =
issue of mobility of users </FONT>
<BR><FONT SIZE=3D2>&gt; connected to the residential gateways. Are =
there any proposals for </FONT>
<BR><FONT SIZE=3D2>&gt; registration of endpoints when they change =
their physical location (Yet </FONT>
<BR><FONT SIZE=3D2>&gt; retaining their domain name,etc).&nbsp; Similar =
to the REGISTER message in SIP.</FONT>
<BR><FONT SIZE=3D2>&gt;&nbsp; </FONT>
<BR><FONT SIZE=3D2>&gt; Regards</FONT>
<BR><FONT SIZE=3D2>&gt; Madhubabu</FONT>
</P>

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Madhubabu,
=20
  Protocol might not directly address the dynamic scaling of MG's, but =
it is always possible that, service change with restart could be =
initiated, when MGC is made aware of the fact that, we are adding the =
new terminations and then trigger a service change with restart. This =
would indirectly amount to dynamic scaling of MG's with out any =
proprietary means.
=20
Thanks,
Shashi

-----Original Message-----
From: megaco-admin@ietf.org [mailto:megaco-admin@ietf.org]On Behalf Of =
Madhubabu Brahmanapally
Sent: Tuesday, February 24, 2004 1:45 AM
To: 'Tom Taylor'
Cc: megaco@ietf.org
Subject: RE: [Megaco] Are Megaco subscribers immobile??



Hi Tom,=20
Thanks for the reply.=20

If the protocol doesn't provide any mechanism...everything boils down to =
provisioning which defeats the purpose of mobility...Of course the =
protocol is not addressing the mobility issue..

But, If new terminations/cards are added...apart from pre-provisioning =
shouldn't there be a way so that the GW can scale using the protocol =
interface. rather than through proprietary means...


Even now when the serviceChange when generated with "restart", it is =
assumed that the terminations are pre-provisioned at the MGC. Then, How =
does the MGs scale dynamically. Of course scaling down is not a =
problem...as the group of terminations are already known to both =
entities.


Regards=20
Madhubabu=20

-----Original Message-----=20
From: Tom Taylor [ mailto:taylor@nortelnetworks.com]=20
Sent: Monday, February 23, 2004 10:50 AM=20
To: Madhubabu Brahmanapally=20
Cc: megaco@ietf.org=20
Subject: Re: [Megaco] Are Megaco subscribers immobile??=20


I would think this contrary to the spirit of Megaco, in that the =
awareness of=20
services resides in the MGC alone and is not reflected in the protocol.=20

Madhubabu Brahmanapally wrote:=20

> Hi All,=20
> The present Protocol spec doesn't address the issue of mobility of =
users=20
> connected to the residential gateways. Are there any proposals for=20
> registration of endpoints when they change their physical location =
(Yet=20
> retaining their domain name,etc).  Similar to the REGISTER message in =
SIP.=20
> =20
> Regards=20
> Madhubabu=20


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<HTML><HEAD>
<META HTTP-EQUIV=3D"Content-Type" CONTENT=3D"text/html; =
charset=3Diso-8859-1">
<TITLE>RE: [Megaco] Are Megaco subscribers immobile??</TITLE>

<META content=3D"MSHTML 5.50.4134.600" name=3DGENERATOR></HEAD>
<BODY>
<DIV>
<DIV><SPAN class=3D370321420-23022004><FONT face=3DArial color=3D#0000ff =

size=3D2>Madhubabu,</FONT></SPAN></DIV>
<DIV><SPAN class=3D370321420-23022004><FONT face=3DArial color=3D#0000ff =

size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D370321420-23022004><FONT face=3DArial color=3D#0000ff =
size=3D2>&nbsp;=20
Protocol might not directly address the dynamic scaling of MG's, =
but&nbsp;it is=20
always possible that, service change with restart could be initiated, =
when MGC=20
is made aware of the fact that, we are adding the new terminations and=20
then&nbsp;trigger a service change with restart. This would indirectly =
amount to=20
dynamic scaling of MG's with out any proprietary =
means.</FONT></SPAN></DIV>
<DIV><SPAN class=3D370321420-23022004><FONT face=3DArial color=3D#0000ff =

size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D370321420-23022004><FONT face=3DArial color=3D#0000ff =

size=3D2>Thanks,</FONT></SPAN></DIV>
<DIV><SPAN class=3D370321420-23022004><FONT face=3DArial color=3D#0000ff =

size=3D2>Shashi</FONT></SPAN></DIV></DIV>
<BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
  <DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
  size=3D2>-----Original Message-----<BR><B>From:</B> =
megaco-admin@ietf.org=20
  [mailto:megaco-admin@ietf.org]<B>On Behalf Of </B>Madhubabu=20
  Brahmanapally<BR><B>Sent:</B> Tuesday, February 24, 2004 1:45 =
AM<BR><B>To:</B>=20
  'Tom Taylor'<BR><B>Cc:</B> megaco@ietf.org<BR><B>Subject:</B> RE: =
[Megaco] Are=20
  Megaco subscribers immobile??<BR><BR></FONT></DIV>
  <P><FONT size=3D2>Hi Tom,</FONT> <BR><FONT size=3D2>Thanks for the =
reply.</FONT>=20
  </P>
  <P><FONT size=3D2>If the protocol doesn't provide any =
mechanism...everything=20
  boils down to provisioning which defeats the purpose of mobility...Of =
course=20
  the protocol is not addressing the mobility issue..</FONT></P>
  <P><FONT size=3D2>But, If new terminations/cards are added...apart =
from=20
  pre-provisioning shouldn't there be a way so that the GW can scale =
using the=20
  protocol interface. rather than through proprietary =
means...</FONT></P><BR>
  <P><FONT size=3D2>Even now when the serviceChange when generated with =
"restart",=20
  it is assumed that the terminations are pre-provisioned at the MGC. =
Then, How=20
  does the MGs scale dynamically. Of course scaling down is not a =
problem...as=20
  the group of terminations are already known to both =
entities.</FONT></P><BR>
  <P><FONT size=3D2>Regards</FONT> <BR><FONT size=3D2>Madhubabu</FONT> =
</P>
  <P><FONT size=3D2>-----Original Message-----</FONT> <BR><FONT =
size=3D2>From: Tom=20
  Taylor [<A=20
  =
href=3D"mailto:taylor@nortelnetworks.com">mailto:taylor@nortelnetworks.co=
m</A>]</FONT>=20
  <BR><FONT size=3D2>Sent: Monday, February 23, 2004 10:50 AM</FONT> =
<BR><FONT=20
  size=3D2>To: Madhubabu Brahmanapally</FONT> <BR><FONT size=3D2>Cc:=20
  megaco@ietf.org</FONT> <BR><FONT size=3D2>Subject: Re: [Megaco] Are =
Megaco=20
  subscribers immobile??</FONT> </P><BR>
  <P><FONT size=3D2>I would think this contrary to the spirit of Megaco, =
in that=20
  the awareness of </FONT><BR><FONT size=3D2>services resides in the MGC =
alone and=20
  is not reflected in the protocol.</FONT> </P>
  <P><FONT size=3D2>Madhubabu Brahmanapally wrote:</FONT> </P>
  <P><FONT size=3D2>&gt; Hi All,</FONT> <BR><FONT size=3D2>&gt; The =
present Protocol=20
  spec doesn't address the issue of mobility of users </FONT><BR><FONT=20
  size=3D2>&gt; connected to the residential gateways. Are there any =
proposals for=20
  </FONT><BR><FONT size=3D2>&gt; registration of endpoints when they =
change their=20
  physical location (Yet </FONT><BR><FONT size=3D2>&gt; retaining their =
domain=20
  name,etc).&nbsp; Similar to the REGISTER message in SIP.</FONT> =
<BR><FONT=20
  size=3D2>&gt;&nbsp; </FONT><BR><FONT size=3D2>&gt; Regards</FONT> =
<BR><FONT=20
  size=3D2>&gt; Madhubabu</FONT> </P></BLOCKQUOTE></BODY></HTML>

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Madhubabu,
=20
  Protocol might not directly address the dynamic scaling of MG's, but =
it is always possible that, service change with restart could be =
initiated, when MGC is made aware of the fact that, we are adding the =
new terminations and then trigger a service change with restart. This =
would indirectly amount to dynamic scaling of MG's with out any =
proprietary means.
=20
Thanks,
Shashi

-----Original Message-----
From: megaco-admin@ietf.org [mailto:megaco-admin@ietf.org]On Behalf Of =
Madhubabu Brahmanapally
Sent: Tuesday, February 24, 2004 1:45 AM
To: 'Tom Taylor'
Cc: megaco@ietf.org
Subject: RE: [Megaco] Are Megaco subscribers immobile??



Hi Tom,=20
Thanks for the reply.=20

If the protocol doesn't provide any mechanism...everything boils down to =
provisioning which defeats the purpose of mobility...Of course the =
protocol is not addressing the mobility issue..

But, If new terminations/cards are added...apart from pre-provisioning =
shouldn't there be a way so that the GW can scale using the protocol =
interface. rather than through proprietary means...


Even now when the serviceChange when generated with "restart", it is =
assumed that the terminations are pre-provisioned at the MGC. Then, How =
does the MGs scale dynamically. Of course scaling down is not a =
problem...as the group of terminations are already known to both =
entities.


Regards=20
Madhubabu=20

-----Original Message-----=20
From: Tom Taylor [ mailto:taylor@nortelnetworks.com]=20
Sent: Monday, February 23, 2004 10:50 AM=20
To: Madhubabu Brahmanapally=20
Cc: megaco@ietf.org=20
Subject: Re: [Megaco] Are Megaco subscribers immobile??=20


I would think this contrary to the spirit of Megaco, in that the =
awareness of=20
services resides in the MGC alone and is not reflected in the protocol.=20

Madhubabu Brahmanapally wrote:=20

> Hi All,=20
> The present Protocol spec doesn't address the issue of mobility of =
users=20
> connected to the residential gateways. Are there any proposals for=20
> registration of endpoints when they change their physical location =
(Yet=20
> retaining their domain name,etc).  Similar to the REGISTER message in =
SIP.=20
> =20
> Regards=20
> Madhubabu=20


------_=_NextPart_001_01C3FA4C.21349DDE
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	charset="iso-8859-1"
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META HTTP-EQUIV=3D"Content-Type" CONTENT=3D"text/html; =
charset=3Diso-8859-1">
<TITLE>RE: [Megaco] Are Megaco subscribers immobile??</TITLE>

<META content=3D"MSHTML 5.50.4134.600" name=3DGENERATOR></HEAD>
<BODY>
<DIV>
<DIV><SPAN class=3D370321420-23022004><FONT face=3DArial color=3D#0000ff =

size=3D2>Madhubabu,</FONT></SPAN></DIV>
<DIV><SPAN class=3D370321420-23022004><FONT face=3DArial color=3D#0000ff =

size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D370321420-23022004><FONT face=3DArial color=3D#0000ff =
size=3D2>&nbsp;=20
Protocol might not directly address the dynamic scaling of MG's, =
but&nbsp;it is=20
always possible that, service change with restart could be initiated, =
when MGC=20
is made aware of the fact that, we are adding the new terminations and=20
then&nbsp;trigger a service change with restart. This would indirectly =
amount to=20
dynamic scaling of MG's with out any proprietary =
means.</FONT></SPAN></DIV>
<DIV><SPAN class=3D370321420-23022004><FONT face=3DArial color=3D#0000ff =

size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D370321420-23022004><FONT face=3DArial color=3D#0000ff =

size=3D2>Thanks,</FONT></SPAN></DIV>
<DIV><SPAN class=3D370321420-23022004><FONT face=3DArial color=3D#0000ff =

size=3D2>Shashi</FONT></SPAN></DIV></DIV>
<BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
  <DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
  size=3D2>-----Original Message-----<BR><B>From:</B> =
megaco-admin@ietf.org=20
  [mailto:megaco-admin@ietf.org]<B>On Behalf Of </B>Madhubabu=20
  Brahmanapally<BR><B>Sent:</B> Tuesday, February 24, 2004 1:45 =
AM<BR><B>To:</B>=20
  'Tom Taylor'<BR><B>Cc:</B> megaco@ietf.org<BR><B>Subject:</B> RE: =
[Megaco] Are=20
  Megaco subscribers immobile??<BR><BR></FONT></DIV>
  <P><FONT size=3D2>Hi Tom,</FONT> <BR><FONT size=3D2>Thanks for the =
reply.</FONT>=20
  </P>
  <P><FONT size=3D2>If the protocol doesn't provide any =
mechanism...everything=20
  boils down to provisioning which defeats the purpose of mobility...Of =
course=20
  the protocol is not addressing the mobility issue..</FONT></P>
  <P><FONT size=3D2>But, If new terminations/cards are added...apart =
from=20
  pre-provisioning shouldn't there be a way so that the GW can scale =
using the=20
  protocol interface. rather than through proprietary =
means...</FONT></P><BR>
  <P><FONT size=3D2>Even now when the serviceChange when generated with =
"restart",=20
  it is assumed that the terminations are pre-provisioned at the MGC. =
Then, How=20
  does the MGs scale dynamically. Of course scaling down is not a =
problem...as=20
  the group of terminations are already known to both =
entities.</FONT></P><BR>
  <P><FONT size=3D2>Regards</FONT> <BR><FONT size=3D2>Madhubabu</FONT> =
</P>
  <P><FONT size=3D2>-----Original Message-----</FONT> <BR><FONT =
size=3D2>From: Tom=20
  Taylor [<A=20
  =
href=3D"mailto:taylor@nortelnetworks.com">mailto:taylor@nortelnetworks.co=
m</A>]</FONT>=20
  <BR><FONT size=3D2>Sent: Monday, February 23, 2004 10:50 AM</FONT> =
<BR><FONT=20
  size=3D2>To: Madhubabu Brahmanapally</FONT> <BR><FONT size=3D2>Cc:=20
  megaco@ietf.org</FONT> <BR><FONT size=3D2>Subject: Re: [Megaco] Are =
Megaco=20
  subscribers immobile??</FONT> </P><BR>
  <P><FONT size=3D2>I would think this contrary to the spirit of Megaco, =
in that=20
  the awareness of </FONT><BR><FONT size=3D2>services resides in the MGC =
alone and=20
  is not reflected in the protocol.</FONT> </P>
  <P><FONT size=3D2>Madhubabu Brahmanapally wrote:</FONT> </P>
  <P><FONT size=3D2>&gt; Hi All,</FONT> <BR><FONT size=3D2>&gt; The =
present Protocol=20
  spec doesn't address the issue of mobility of users </FONT><BR><FONT=20
  size=3D2>&gt; connected to the residential gateways. Are there any =
proposals for=20
  </FONT><BR><FONT size=3D2>&gt; registration of endpoints when they =
change their=20
  physical location (Yet </FONT><BR><FONT size=3D2>&gt; retaining their =
domain=20
  name,etc).&nbsp; Similar to the REGISTER message in SIP.</FONT> =
<BR><FONT=20
  size=3D2>&gt;&nbsp; </FONT><BR><FONT size=3D2>&gt; Regards</FONT> =
<BR><FONT=20
  size=3D2>&gt; Madhubabu</FONT> </P></BLOCKQUOTE></BODY></HTML>

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To: Madhubabu Brahmanapally <Madhubabu@veraznet.com>
CC: megaco@ietf.org
Subject: Re: [Megaco] Are Megaco subscribers immobile??
References: <9E388C880C1ED411AFE1009027E787250526F146@mail.veraznet.com>
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The key point is that only the MGC is aware of the telephone number associated 
with a particular termination.  The telephone number and what it implies in terms 
of services are outside the scope of Megaco, which deals only with media 
processing, events, and signals.  You can indicate through ServiceChange that 
physical terminations have been added to the MG, but you need some other protocol 
(e.g. SNMP) to indicate (either directly from the telephone set or on behalf of 
the set) information not related to media.

Madhubabu Brahmanapally wrote:

> Hi Tom,
> Thanks for the reply.
> 
> If the protocol doesn't provide any mechanism...everything boils down to 
> provisioning which defeats the purpose of mobility...Of course the 
> protocol is not addressing the mobility issue..
> 
> But, If new terminations/cards are added...apart from pre-provisioning 
> shouldn't there be a way so that the GW can scale using the protocol 
> interface. rather than through proprietary means...
> 
> 
> Even now when the serviceChange when generated with "restart", it is 
> assumed that the terminations are pre-provisioned at the MGC. Then, How 
> does the MGs scale dynamically. Of course scaling down is not a 
> problem...as the group of terminations are already known to both entities.
> 
> 
> Regards
> Madhubabu
> 
> -----Original Message-----
> From: Tom Taylor [mailto:taylor@nortelnetworks.com]
> Sent: Monday, February 23, 2004 10:50 AM
> To: Madhubabu Brahmanapally
> Cc: megaco@ietf.org
> Subject: Re: [Megaco] Are Megaco subscribers immobile??
> 
> 
> I would think this contrary to the spirit of Megaco, in that the 
> awareness of
> services resides in the MGC alone and is not reflected in the protocol.
> 
> Madhubabu Brahmanapally wrote:
> 
>  > Hi All,
>  > The present Protocol spec doesn't address the issue of mobility of users
>  > connected to the residential gateways. Are there any proposals for
>  > registration of endpoints when they change their physical location (Yet
>  > retaining their domain name,etc).  Similar to the REGISTER message in 
> SIP.
>  > 
>  > Regards
>  > Madhubabu
> 

_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco


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To: Madhubabu Brahmanapally <Madhubabu@veraznet.com>
CC: megaco@ietf.org
Subject: Re: [Megaco] Are Megaco subscribers immobile??
References: <9E388C880C1ED411AFE1009027E787250526F146@mail.veraznet.com>
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The key point is that only the MGC is aware of the telephone number associated 
with a particular termination.  The telephone number and what it implies in terms 
of services are outside the scope of Megaco, which deals only with media 
processing, events, and signals.  You can indicate through ServiceChange that 
physical terminations have been added to the MG, but you need some other protocol 
(e.g. SNMP) to indicate (either directly from the telephone set or on behalf of 
the set) information not related to media.

Madhubabu Brahmanapally wrote:

> Hi Tom,
> Thanks for the reply.
> 
> If the protocol doesn't provide any mechanism...everything boils down to 
> provisioning which defeats the purpose of mobility...Of course the 
> protocol is not addressing the mobility issue..
> 
> But, If new terminations/cards are added...apart from pre-provisioning 
> shouldn't there be a way so that the GW can scale using the protocol 
> interface. rather than through proprietary means...
> 
> 
> Even now when the serviceChange when generated with "restart", it is 
> assumed that the terminations are pre-provisioned at the MGC. Then, How 
> does the MGs scale dynamically. Of course scaling down is not a 
> problem...as the group of terminations are already known to both entities.
> 
> 
> Regards
> Madhubabu
> 
> -----Original Message-----
> From: Tom Taylor [mailto:taylor@nortelnetworks.com]
> Sent: Monday, February 23, 2004 10:50 AM
> To: Madhubabu Brahmanapally
> Cc: megaco@ietf.org
> Subject: Re: [Megaco] Are Megaco subscribers immobile??
> 
> 
> I would think this contrary to the spirit of Megaco, in that the 
> awareness of
> services resides in the MGC alone and is not reflected in the protocol.
> 
> Madhubabu Brahmanapally wrote:
> 
>  > Hi All,
>  > The present Protocol spec doesn't address the issue of mobility of users
>  > connected to the residential gateways. Are there any proposals for
>  > registration of endpoints when they change their physical location (Yet
>  > retaining their domain name,etc).  Similar to the REGISTER message in 
> SIP.
>  > 
>  > Regards
>  > Madhubabu
> 

_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco



From megaco-admin@ietf.org  Mon Feb 23 17:18:33 2004
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Hi Shashi,
ServiceChange can be sent from MG to those terminations that MGC is already
in aware of (and not for those which were never provisioned at the MGC).
Tom's reply seems more logical as the protocol only deals with the
Mediaprocessing, events and signals. Its not within the scope of the
protocol.
 
Regards
Madhubabu

-----Original Message-----
From: shashi.kumar@wipro.com [mailto:shashi.kumar@wipro.com]
Sent: Monday, February 23, 2004 12:32 PM
To: Madhubabu Brahmanapally; taylor@nortelnetworks.com
Cc: megaco@ietf.org
Subject: RE: [Megaco] Are Megaco subscribers immobile??


Madhubabu,
 
  Protocol might not directly address the dynamic scaling of MG's, but it is
always possible that, service change with restart could be initiated, when
MGC is made aware of the fact that, we are adding the new terminations and
then trigger a service change with restart. This would indirectly amount to
dynamic scaling of MG's with out any proprietary means.
 
Thanks,
Shashi

-----Original Message-----
From: megaco-admin@ietf.org [mailto:megaco-admin@ietf.org]On Behalf Of
Madhubabu Brahmanapally
Sent: Tuesday, February 24, 2004 1:45 AM
To: 'Tom Taylor'
Cc: megaco@ietf.org
Subject: RE: [Megaco] Are Megaco subscribers immobile??



Hi Tom, 
Thanks for the reply. 

If the protocol doesn't provide any mechanism...everything boils down to
provisioning which defeats the purpose of mobility...Of course the protocol
is not addressing the mobility issue..

But, If new terminations/cards are added...apart from pre-provisioning
shouldn't there be a way so that the GW can scale using the protocol
interface. rather than through proprietary means...


Even now when the serviceChange when generated with "restart", it is assumed
that the terminations are pre-provisioned at the MGC. Then, How does the MGs
scale dynamically. Of course scaling down is not a problem...as the group of
terminations are already known to both entities.


Regards 
Madhubabu 

-----Original Message----- 
From: Tom Taylor [ mailto:taylor@nortelnetworks.com
<mailto:taylor@nortelnetworks.com> ] 
Sent: Monday, February 23, 2004 10:50 AM 
To: Madhubabu Brahmanapally 
Cc: megaco@ietf.org 
Subject: Re: [Megaco] Are Megaco subscribers immobile?? 


I would think this contrary to the spirit of Megaco, in that the awareness
of 
services resides in the MGC alone and is not reflected in the protocol. 

Madhubabu Brahmanapally wrote: 

> Hi All, 
> The present Protocol spec doesn't address the issue of mobility of users 
> connected to the residential gateways. Are there any proposals for 
> registration of endpoints when they change their physical location (Yet 
> retaining their domain name,etc).  Similar to the REGISTER message in SIP.

>  
> Regards 
> Madhubabu 


Confidentiality Notice





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this message are intended

for the exclusive use of the addressee(s) and may contain confidential or
privileged information. If

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Mailadmin@wipro.com immediately

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<HTML><HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<TITLE>RE: [Megaco] Are Megaco subscribers immobile??</TITLE>

<META content="MSHTML 6.00.2800.1400" name=GENERATOR></HEAD>
<BODY>
<DIV><SPAN class=599240922-23022004><FONT face=Arial color=#0000ff size=2>Hi 
Shashi,</FONT></SPAN></DIV>
<DIV><SPAN class=599240922-23022004><FONT face=Arial color=#0000ff 
size=2>ServiceChange can be sent from MG to those terminations that MGC is 
already in aware of (and not for those which were never provisioned at the MGC). 
Tom's reply seems more logical as the protocol only deals with the 
Mediaprocessing, events and signals. Its not within the scope of the 
protocol.</FONT></SPAN></DIV>
<DIV><SPAN class=599240922-23022004><FONT face=Arial color=#0000ff 
size=2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=599240922-23022004><FONT face=Arial color=#0000ff 
size=2>Regards</FONT></SPAN></DIV>
<DIV><SPAN class=599240922-23022004><FONT face=Arial color=#0000ff 
size=2>Madhubabu</FONT></SPAN></DIV>
<BLOCKQUOTE>
  <DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma 
  size=2>-----Original Message-----<BR><B>From:</B> shashi.kumar@wipro.com 
  [mailto:shashi.kumar@wipro.com]<BR><B>Sent:</B> Monday, February 23, 2004 
  12:32 PM<BR><B>To:</B> Madhubabu Brahmanapally; 
  taylor@nortelnetworks.com<BR><B>Cc:</B> megaco@ietf.org<BR><B>Subject:</B> RE: 
  [Megaco] Are Megaco subscribers immobile??<BR><BR></FONT></DIV>
  <DIV>
  <DIV><SPAN class=370321420-23022004><FONT face=Arial color=#0000ff 
  size=2>Madhubabu,</FONT></SPAN></DIV>
  <DIV><SPAN class=370321420-23022004><FONT face=Arial color=#0000ff 
  size=2></FONT></SPAN>&nbsp;</DIV>
  <DIV><SPAN class=370321420-23022004><FONT face=Arial color=#0000ff 
  size=2>&nbsp; Protocol might not directly address the dynamic scaling of MG's, 
  but&nbsp;it is always possible that, service change with restart could be 
  initiated, when MGC is made aware of the fact that, we are adding the new 
  terminations and then&nbsp;trigger a service change with restart. This would 
  indirectly amount to dynamic scaling of MG's with out any proprietary 
  means.</FONT></SPAN></DIV>
  <DIV><SPAN class=370321420-23022004><FONT face=Arial color=#0000ff 
  size=2></FONT></SPAN>&nbsp;</DIV>
  <DIV><SPAN class=370321420-23022004><FONT face=Arial color=#0000ff 
  size=2>Thanks,</FONT></SPAN></DIV>
  <DIV><SPAN class=370321420-23022004><FONT face=Arial color=#0000ff 
  size=2>Shashi</FONT></SPAN></DIV></DIV>
  <BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
    <DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma 
    size=2>-----Original Message-----<BR><B>From:</B> megaco-admin@ietf.org 
    [mailto:megaco-admin@ietf.org]<B>On Behalf Of </B>Madhubabu 
    Brahmanapally<BR><B>Sent:</B> Tuesday, February 24, 2004 1:45 
    AM<BR><B>To:</B> 'Tom Taylor'<BR><B>Cc:</B> 
    megaco@ietf.org<BR><B>Subject:</B> RE: [Megaco] Are Megaco subscribers 
    immobile??<BR><BR></FONT></DIV>
    <P><FONT size=2>Hi Tom,</FONT> <BR><FONT size=2>Thanks for the reply.</FONT> 
    </P>
    <P><FONT size=2>If the protocol doesn't provide any mechanism...everything 
    boils down to provisioning which defeats the purpose of mobility...Of course 
    the protocol is not addressing the mobility issue..</FONT></P>
    <P><FONT size=2>But, If new terminations/cards are added...apart from 
    pre-provisioning shouldn't there be a way so that the GW can scale using the 
    protocol interface. rather than through proprietary means...</FONT></P><BR>
    <P><FONT size=2>Even now when the serviceChange when generated with 
    "restart", it is assumed that the terminations are pre-provisioned at the 
    MGC. Then, How does the MGs scale dynamically. Of course scaling down is not 
    a problem...as the group of terminations are already known to both 
    entities.</FONT></P><BR>
    <P><FONT size=2>Regards</FONT> <BR><FONT size=2>Madhubabu</FONT> </P>
    <P><FONT size=2>-----Original Message-----</FONT> <BR><FONT size=2>From: Tom 
    Taylor [<A 
    href="mailto:taylor@nortelnetworks.com">mailto:taylor@nortelnetworks.com</A>]</FONT> 
    <BR><FONT size=2>Sent: Monday, February 23, 2004 10:50 AM</FONT> <BR><FONT 
    size=2>To: Madhubabu Brahmanapally</FONT> <BR><FONT size=2>Cc: 
    megaco@ietf.org</FONT> <BR><FONT size=2>Subject: Re: [Megaco] Are Megaco 
    subscribers immobile??</FONT> </P><BR>
    <P><FONT size=2>I would think this contrary to the spirit of Megaco, in that 
    the awareness of </FONT><BR><FONT size=2>services resides in the MGC alone 
    and is not reflected in the protocol.</FONT> </P>
    <P><FONT size=2>Madhubabu Brahmanapally wrote:</FONT> </P>
    <P><FONT size=2>&gt; Hi All,</FONT> <BR><FONT size=2>&gt; The present 
    Protocol spec doesn't address the issue of mobility of users 
    </FONT><BR><FONT size=2>&gt; connected to the residential gateways. Are 
    there any proposals for </FONT><BR><FONT size=2>&gt; registration of 
    endpoints when they change their physical location (Yet </FONT><BR><FONT 
    size=2>&gt; retaining their domain name,etc).&nbsp; Similar to the REGISTER 
    message in SIP.</FONT> <BR><FONT size=2>&gt;&nbsp; </FONT><BR><FONT 
    size=2>&gt; Regards</FONT> <BR><FONT size=2>&gt; Madhubabu</FONT> 
  </P></BLOCKQUOTE>
  <TABLE>
    <TBODY>
    <TR>
      <TD bgColor=#ffffff><FONT color=#000000><PRE>Confidentiality Notice


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Hi Shashi,
ServiceChange can be sent from MG to those terminations that MGC is already
in aware of (and not for those which were never provisioned at the MGC).
Tom's reply seems more logical as the protocol only deals with the
Mediaprocessing, events and signals. Its not within the scope of the
protocol.
 
Regards
Madhubabu

-----Original Message-----
From: shashi.kumar@wipro.com [mailto:shashi.kumar@wipro.com]
Sent: Monday, February 23, 2004 12:32 PM
To: Madhubabu Brahmanapally; taylor@nortelnetworks.com
Cc: megaco@ietf.org
Subject: RE: [Megaco] Are Megaco subscribers immobile??


Madhubabu,
 
  Protocol might not directly address the dynamic scaling of MG's, but it is
always possible that, service change with restart could be initiated, when
MGC is made aware of the fact that, we are adding the new terminations and
then trigger a service change with restart. This would indirectly amount to
dynamic scaling of MG's with out any proprietary means.
 
Thanks,
Shashi

-----Original Message-----
From: megaco-admin@ietf.org [mailto:megaco-admin@ietf.org]On Behalf Of
Madhubabu Brahmanapally
Sent: Tuesday, February 24, 2004 1:45 AM
To: 'Tom Taylor'
Cc: megaco@ietf.org
Subject: RE: [Megaco] Are Megaco subscribers immobile??



Hi Tom, 
Thanks for the reply. 

If the protocol doesn't provide any mechanism...everything boils down to
provisioning which defeats the purpose of mobility...Of course the protocol
is not addressing the mobility issue..

But, If new terminations/cards are added...apart from pre-provisioning
shouldn't there be a way so that the GW can scale using the protocol
interface. rather than through proprietary means...


Even now when the serviceChange when generated with "restart", it is assumed
that the terminations are pre-provisioned at the MGC. Then, How does the MGs
scale dynamically. Of course scaling down is not a problem...as the group of
terminations are already known to both entities.


Regards 
Madhubabu 

-----Original Message----- 
From: Tom Taylor [ mailto:taylor@nortelnetworks.com
<mailto:taylor@nortelnetworks.com> ] 
Sent: Monday, February 23, 2004 10:50 AM 
To: Madhubabu Brahmanapally 
Cc: megaco@ietf.org 
Subject: Re: [Megaco] Are Megaco subscribers immobile?? 


I would think this contrary to the spirit of Megaco, in that the awareness
of 
services resides in the MGC alone and is not reflected in the protocol. 

Madhubabu Brahmanapally wrote: 

> Hi All, 
> The present Protocol spec doesn't address the issue of mobility of users 
> connected to the residential gateways. Are there any proposals for 
> registration of endpoints when they change their physical location (Yet 
> retaining their domain name,etc).  Similar to the REGISTER message in SIP.

>  
> Regards 
> Madhubabu 


Confidentiality Notice





The information contained in this electronic message and any attachments to
this message are intended

for the exclusive use of the addressee(s) and may contain confidential or
privileged information. If

you are not the intended recipient, please notify the sender at Wipro or
Mailadmin@wipro.com immediately

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<TITLE>RE: [Megaco] Are Megaco subscribers immobile??</TITLE>

<META content="MSHTML 6.00.2800.1400" name=GENERATOR></HEAD>
<BODY>
<DIV><SPAN class=599240922-23022004><FONT face=Arial color=#0000ff size=2>Hi 
Shashi,</FONT></SPAN></DIV>
<DIV><SPAN class=599240922-23022004><FONT face=Arial color=#0000ff 
size=2>ServiceChange can be sent from MG to those terminations that MGC is 
already in aware of (and not for those which were never provisioned at the MGC). 
Tom's reply seems more logical as the protocol only deals with the 
Mediaprocessing, events and signals. Its not within the scope of the 
protocol.</FONT></SPAN></DIV>
<DIV><SPAN class=599240922-23022004><FONT face=Arial color=#0000ff 
size=2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=599240922-23022004><FONT face=Arial color=#0000ff 
size=2>Regards</FONT></SPAN></DIV>
<DIV><SPAN class=599240922-23022004><FONT face=Arial color=#0000ff 
size=2>Madhubabu</FONT></SPAN></DIV>
<BLOCKQUOTE>
  <DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma 
  size=2>-----Original Message-----<BR><B>From:</B> shashi.kumar@wipro.com 
  [mailto:shashi.kumar@wipro.com]<BR><B>Sent:</B> Monday, February 23, 2004 
  12:32 PM<BR><B>To:</B> Madhubabu Brahmanapally; 
  taylor@nortelnetworks.com<BR><B>Cc:</B> megaco@ietf.org<BR><B>Subject:</B> RE: 
  [Megaco] Are Megaco subscribers immobile??<BR><BR></FONT></DIV>
  <DIV>
  <DIV><SPAN class=370321420-23022004><FONT face=Arial color=#0000ff 
  size=2>Madhubabu,</FONT></SPAN></DIV>
  <DIV><SPAN class=370321420-23022004><FONT face=Arial color=#0000ff 
  size=2></FONT></SPAN>&nbsp;</DIV>
  <DIV><SPAN class=370321420-23022004><FONT face=Arial color=#0000ff 
  size=2>&nbsp; Protocol might not directly address the dynamic scaling of MG's, 
  but&nbsp;it is always possible that, service change with restart could be 
  initiated, when MGC is made aware of the fact that, we are adding the new 
  terminations and then&nbsp;trigger a service change with restart. This would 
  indirectly amount to dynamic scaling of MG's with out any proprietary 
  means.</FONT></SPAN></DIV>
  <DIV><SPAN class=370321420-23022004><FONT face=Arial color=#0000ff 
  size=2></FONT></SPAN>&nbsp;</DIV>
  <DIV><SPAN class=370321420-23022004><FONT face=Arial color=#0000ff 
  size=2>Thanks,</FONT></SPAN></DIV>
  <DIV><SPAN class=370321420-23022004><FONT face=Arial color=#0000ff 
  size=2>Shashi</FONT></SPAN></DIV></DIV>
  <BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
    <DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma 
    size=2>-----Original Message-----<BR><B>From:</B> megaco-admin@ietf.org 
    [mailto:megaco-admin@ietf.org]<B>On Behalf Of </B>Madhubabu 
    Brahmanapally<BR><B>Sent:</B> Tuesday, February 24, 2004 1:45 
    AM<BR><B>To:</B> 'Tom Taylor'<BR><B>Cc:</B> 
    megaco@ietf.org<BR><B>Subject:</B> RE: [Megaco] Are Megaco subscribers 
    immobile??<BR><BR></FONT></DIV>
    <P><FONT size=2>Hi Tom,</FONT> <BR><FONT size=2>Thanks for the reply.</FONT> 
    </P>
    <P><FONT size=2>If the protocol doesn't provide any mechanism...everything 
    boils down to provisioning which defeats the purpose of mobility...Of course 
    the protocol is not addressing the mobility issue..</FONT></P>
    <P><FONT size=2>But, If new terminations/cards are added...apart from 
    pre-provisioning shouldn't there be a way so that the GW can scale using the 
    protocol interface. rather than through proprietary means...</FONT></P><BR>
    <P><FONT size=2>Even now when the serviceChange when generated with 
    "restart", it is assumed that the terminations are pre-provisioned at the 
    MGC. Then, How does the MGs scale dynamically. Of course scaling down is not 
    a problem...as the group of terminations are already known to both 
    entities.</FONT></P><BR>
    <P><FONT size=2>Regards</FONT> <BR><FONT size=2>Madhubabu</FONT> </P>
    <P><FONT size=2>-----Original Message-----</FONT> <BR><FONT size=2>From: Tom 
    Taylor [<A 
    href="mailto:taylor@nortelnetworks.com">mailto:taylor@nortelnetworks.com</A>]</FONT> 
    <BR><FONT size=2>Sent: Monday, February 23, 2004 10:50 AM</FONT> <BR><FONT 
    size=2>To: Madhubabu Brahmanapally</FONT> <BR><FONT size=2>Cc: 
    megaco@ietf.org</FONT> <BR><FONT size=2>Subject: Re: [Megaco] Are Megaco 
    subscribers immobile??</FONT> </P><BR>
    <P><FONT size=2>I would think this contrary to the spirit of Megaco, in that 
    the awareness of </FONT><BR><FONT size=2>services resides in the MGC alone 
    and is not reflected in the protocol.</FONT> </P>
    <P><FONT size=2>Madhubabu Brahmanapally wrote:</FONT> </P>
    <P><FONT size=2>&gt; Hi All,</FONT> <BR><FONT size=2>&gt; The present 
    Protocol spec doesn't address the issue of mobility of users 
    </FONT><BR><FONT size=2>&gt; connected to the residential gateways. Are 
    there any proposals for </FONT><BR><FONT size=2>&gt; registration of 
    endpoints when they change their physical location (Yet </FONT><BR><FONT 
    size=2>&gt; retaining their domain name,etc).&nbsp; Similar to the REGISTER 
    message in SIP.</FONT> <BR><FONT size=2>&gt;&nbsp; </FONT><BR><FONT 
    size=2>&gt; Regards</FONT> <BR><FONT size=2>&gt; Madhubabu</FONT> 
  </P></BLOCKQUOTE>
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Subject: Re: [Megaco] Questions about H.248.17 "line test packages"(upgrade,sorry,
 my poor English)
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Hello Zhao,

I'm the editor of H.248.17. Please see my replies below marked [CHG].

Regards, Christian

Zhao Bo wrote:

> Could anyone kindly answer the following questions (I can't find the author's email address in H.248.17 text).
> 
> 1. Section 1 "Scope" says:
> "The detailing of results that are reported (e.g. events and statistics), as well as the timing and mechanisms used for
> transmitting such records from the MG to the MGC"
> Why? If a test is initiated by MGC, why not define a protocol to send the measuring result back to MGC?

[CHG] As the results are related to the physical characteristics of the bearer 
and not usually interesting to a MGC it was seen that a protocol other than 
H.248 (or even internal O&M of the MG) was more suitable for this information.

> 
> 2.If we have two switch connected with temination T1 and T2
>     SW1--T1-------T2--SW2
> Shall the H.248 signal be apllied to T1 and T2, or some extra termination, for example T3 or T4 in the following scenerio:
> T3--SW1--T1-------T2--SW2--T4

[CHG] Depends on what you want to test. If all you want to test is the link 
between T1 and T2 then you only apply signals between T1 & T2.

> 
> 3. Section 7.1.1 says:
> "ITU-T Rec. O.11 describes test responder behaviour. For a description of this behaviour see
> clause 9."
> But neither O.11 nor H.247.17 text has a clause 9?

[CHG] Please see the latest implementors guide for the correction.

> 
> Best regards
> 
> Zhao Bo
> 
> 
> Zhao Bo
> 
> *****************************************************************
> This e-mail and its attachments contain confidential information from HUAWEI, which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction, or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender by phone or email immediately and delete it!
> *****************************************************************
> 
> _______________________________________________
> Megaco mailing list
> Megaco@ietf.org
> https://www1.ietf.org/mailman/listinfo/megaco
> 


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 my poor English)
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Hello Zhao,

I'm the editor of H.248.17. Please see my replies below marked [CHG].

Regards, Christian

Zhao Bo wrote:

> Could anyone kindly answer the following questions (I can't find the author's email address in H.248.17 text).
> 
> 1. Section 1 "Scope" says:
> "The detailing of results that are reported (e.g. events and statistics), as well as the timing and mechanisms used for
> transmitting such records from the MG to the MGC"
> Why? If a test is initiated by MGC, why not define a protocol to send the measuring result back to MGC?

[CHG] As the results are related to the physical characteristics of the bearer 
and not usually interesting to a MGC it was seen that a protocol other than 
H.248 (or even internal O&M of the MG) was more suitable for this information.

> 
> 2.If we have two switch connected with temination T1 and T2
>     SW1--T1-------T2--SW2
> Shall the H.248 signal be apllied to T1 and T2, or some extra termination, for example T3 or T4 in the following scenerio:
> T3--SW1--T1-------T2--SW2--T4

[CHG] Depends on what you want to test. If all you want to test is the link 
between T1 and T2 then you only apply signals between T1 & T2.

> 
> 3. Section 7.1.1 says:
> "ITU-T Rec. O.11 describes test responder behaviour. For a description of this behaviour see
> clause 9."
> But neither O.11 nor H.247.17 text has a clause 9?

[CHG] Please see the latest implementors guide for the correction.

> 
> Best regards
> 
> Zhao Bo
> 
> 
> Zhao Bo
> 
> *****************************************************************
> This e-mail and its attachments contain confidential information from HUAWEI, which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction, or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender by phone or email immediately and delete it!
> *****************************************************************
> 
> _______________________________________________
> Megaco mailing list
> Megaco@ietf.org
> https://www1.ietf.org/mailman/listinfo/megaco
> 


This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you.

E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof.


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From megaco-admin@ietf.org  Wed Feb 25 02:14:32 2004
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In this case, the A/u law format of a TDM ciruit can be provisioned,  but the MG doesn't know the service type of a call, thus 
has no way to know if a conversion is needed. For speech service conversion may be needed; for data service like isdn UDI, conversion is not permitted.
Is there any method to solve this problem?

Zhao Bo

*****************************************************************
This e-mail and its attachments contain confidential information from HUAWEI, which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction, or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender by phone or email immediately and delete it!
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Date: Wed, 25 Feb 2004 15:11:00 +0800
From: Zhao Bo <zbo@huawei.com>
To: megaco@ietf.org
Message-id: <000701c3fb6e$8665d1e0$f8486e0a@HUAWEI.COM>
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In this case, the A/u law format of a TDM ciruit can be provisioned,  but the MG doesn't know the service type of a call, thus 
has no way to know if a conversion is needed. For speech service conversion may be needed; for data service like isdn UDI, conversion is not permitted.
Is there any method to solve this problem?

Zhao Bo

*****************************************************************
This e-mail and its attachments contain confidential information from HUAWEI, which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction, or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender by phone or email immediately and delete it!
*****************************************************************

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From megaco-admin@ietf.org  Wed Feb 25 09:27:30 2004
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	Wed, 25 Feb 2004 14:24:40 GMT
Subject: TDM Hairpinning; Re: [Megaco] Hairpin case A/u Law conversion
To: Zhao Bo <zbo@huawei.com>
Cc: megaco@ietf.org, megaco-admin@ietf.org
X-Mailer: Lotus Notes Release 5.0.8  June 18, 2001
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Date: Wed, 25 Feb 2004 15:24:39 +0100
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Dear Zhao Bo,

because there isn't any "hairpinning" definition in MEGACOP/H.248 stand=
ards
("please correct if I'm wrong"), I'd like to use the following one for
responding your questions:

***********************************************************************=
************
Definition:
TDM Hairpinning
? is a scenario whereby a call is being made between two TDM endpoints =
on a
    single media gateway. The media comes in on one TDM channel and goe=
s
    out on another TDM channel through the use of an internal loop in t=
he
    media gateway.

Note 1: due to the fact that there are local call types at local exchan=
ges
(CLASS5), and transit exchanges (CLASS4) in legacy TDM networks (PSTN,
NISDN, etc), there is a variety of TDM-to-TDM connection types behind t=
he
general "TDM hairpinning" capability (dependent on required type of IWF=
,
etc.) in corresponding H.248 MG types

Note 2: H.248/MEGCOP perspective
TDM Hairpinning =3D Single H.248 Context with 2 H.248 TDM Terminations
***********************************************************************=
*************

Based on this hairpinning understanding, my answers are:

(1) Speech telephony service: G.711 companding formats are a property o=
f
the corresponding H.248 TDM termination

[Note: dependent on MG architecture and implementation, property might =
be
signalled or preprovisioned. Of course, G.711 companding law is an inhe=
rent
property of your DS0 channel at your PDH/SDH/SONET framer; the way, how=

this DS0 property is associated with the corresponding H.248 TDM
Termination property may only realized MG-internally for very specific =
MG
architectures. Generally it is up to the MGC, particularly if some (or =
all)
DS0's are ISDN B channels.]

(2) Voiceband Data services: same as in (1)

[Note: VBD according new ITU-T V.152 -> "... For purposes of
interoperability, a V.152 compliant implementation shall support at lea=
st
both G.711 A-law and G.711 =EC-law codecs as VBD codecs. "]

(3) ISDN UDI =3D all ISDN Teleservices with ISDN I.231. bearer service
requirement
=3D> H.248 TDM Termination property must be signalled by MGC, if not, M=
G may
not guarantee UDI capability (i.e., fully transparent 64-kbit/s bearer
channel) in TDM hairpinning scenarios ...


Conclusion:
IF your MG is supporting
PSTN lines (=3D H.248 ALN Termination),
PSTN trunks (=3D H.248 TDM Termination), and
ISDN B channels (=3D H.248 TDM Termination)

AND IF you've such services and interworking requirements

THEN you should generally signal the corresponding properties ...

... in case of
TDM hairpinning,
ALN hairpinning, or
ALN-to-TDM connection types.

Regards,
Albrecht

ALCATEL




                                                                       =
                                                                       =
     =20
                      Zhao Bo                                          =
                                                                       =
     =20
                      <zbo@huawei.com>         To:      megaco@ietf.org=
                                                                       =
     =20
                      Sent by:                 cc:                     =
                                                                       =
     =20
                      megaco-admin@iet         Subject: [Megaco] Hairpi=
n case A/u Law conversion                                              =
     =20
                      f.org                                            =
                                                                       =
     =20
                                                                       =
                                                                       =
     =20
                                                                       =
                                                                       =
     =20
                      25.02.2004 08:11                                 =
                                                                       =
     =20
                                                                       =
                                                                       =
     =20
                                                                       =
                                                                       =
     =20




In this case, the A/u law format of a TDM ciruit can be provisioned,  b=
ut
the MG doesn't know the service type of a call, thus
has no way to know if a conversion is needed. For speech service conver=
sion
may be needed; for data service like isdn UDI, conversion is not permit=
ted.
Is there any method to solve this problem?

Zhao Bo

*****************************************************************
This e-mail and its attachments contain confidential information from
HUAWEI, which is intended only for the person or entity whose address i=
s
listed above. Any use of the information contained herein in any way
(including, but not limited to, total or partial disclosure, reproducti=
on,
or dissemination) by persons other than the intended recipient(s) is
prohibited. If you receive this e-mail in error, please notify the send=
er
by phone or email immediately and delete it!
*****************************************************************

_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco



=



_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco


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	Wed, 25 Feb 2004 14:24:40 GMT
Subject: TDM Hairpinning; Re: [Megaco] Hairpin case A/u Law conversion
To: Zhao Bo <zbo@huawei.com>
Cc: megaco@ietf.org, megaco-admin@ietf.org
X-Mailer: Lotus Notes Release 5.0.8  June 18, 2001
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Dear Zhao Bo,

because there isn't any "hairpinning" definition in MEGACOP/H.248 stand=
ards
("please correct if I'm wrong"), I'd like to use the following one for
responding your questions:

***********************************************************************=
************
Definition:
TDM Hairpinning
? is a scenario whereby a call is being made between two TDM endpoints =
on a
    single media gateway. The media comes in on one TDM channel and goe=
s
    out on another TDM channel through the use of an internal loop in t=
he
    media gateway.

Note 1: due to the fact that there are local call types at local exchan=
ges
(CLASS5), and transit exchanges (CLASS4) in legacy TDM networks (PSTN,
NISDN, etc), there is a variety of TDM-to-TDM connection types behind t=
he
general "TDM hairpinning" capability (dependent on required type of IWF=
,
etc.) in corresponding H.248 MG types

Note 2: H.248/MEGCOP perspective
TDM Hairpinning =3D Single H.248 Context with 2 H.248 TDM Terminations
***********************************************************************=
*************

Based on this hairpinning understanding, my answers are:

(1) Speech telephony service: G.711 companding formats are a property o=
f
the corresponding H.248 TDM termination

[Note: dependent on MG architecture and implementation, property might =
be
signalled or preprovisioned. Of course, G.711 companding law is an inhe=
rent
property of your DS0 channel at your PDH/SDH/SONET framer; the way, how=

this DS0 property is associated with the corresponding H.248 TDM
Termination property may only realized MG-internally for very specific =
MG
architectures. Generally it is up to the MGC, particularly if some (or =
all)
DS0's are ISDN B channels.]

(2) Voiceband Data services: same as in (1)

[Note: VBD according new ITU-T V.152 -> "... For purposes of
interoperability, a V.152 compliant implementation shall support at lea=
st
both G.711 A-law and G.711 =EC-law codecs as VBD codecs. "]

(3) ISDN UDI =3D all ISDN Teleservices with ISDN I.231. bearer service
requirement
=3D> H.248 TDM Termination property must be signalled by MGC, if not, M=
G may
not guarantee UDI capability (i.e., fully transparent 64-kbit/s bearer
channel) in TDM hairpinning scenarios ...


Conclusion:
IF your MG is supporting
PSTN lines (=3D H.248 ALN Termination),
PSTN trunks (=3D H.248 TDM Termination), and
ISDN B channels (=3D H.248 TDM Termination)

AND IF you've such services and interworking requirements

THEN you should generally signal the corresponding properties ...

... in case of
TDM hairpinning,
ALN hairpinning, or
ALN-to-TDM connection types.

Regards,
Albrecht

ALCATEL




                                                                       =
                                                                       =
     =20
                      Zhao Bo                                          =
                                                                       =
     =20
                      <zbo@huawei.com>         To:      megaco@ietf.org=
                                                                       =
     =20
                      Sent by:                 cc:                     =
                                                                       =
     =20
                      megaco-admin@iet         Subject: [Megaco] Hairpi=
n case A/u Law conversion                                              =
     =20
                      f.org                                            =
                                                                       =
     =20
                                                                       =
                                                                       =
     =20
                                                                       =
                                                                       =
     =20
                      25.02.2004 08:11                                 =
                                                                       =
     =20
                                                                       =
                                                                       =
     =20
                                                                       =
                                                                       =
     =20




In this case, the A/u law format of a TDM ciruit can be provisioned,  b=
ut
the MG doesn't know the service type of a call, thus
has no way to know if a conversion is needed. For speech service conver=
sion
may be needed; for data service like isdn UDI, conversion is not permit=
ted.
Is there any method to solve this problem?

Zhao Bo

*****************************************************************
This e-mail and its attachments contain confidential information from
HUAWEI, which is intended only for the person or entity whose address i=
s
listed above. Any use of the information contained herein in any way
(including, but not limited to, total or partial disclosure, reproducti=
on,
or dissemination) by persons other than the intended recipient(s) is
prohibited. If you receive this e-mail in error, please notify the send=
er
by phone or email immediately and delete it!
*****************************************************************

_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco



=



_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco



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Date: Thu, 26 Feb 2004 16:34:53 +0800
From: Zhao Bo <zbo@huawei.com>
Subject: Re: TDM Hairpinning; Re: [Megaco] Hairpin case A/u Law conversion
To: Albrecht.Schwarz@alcatel.de
Cc: megaco@ietf.org
Message-id: <000401c3fc43$68abbe00$f8486e0a@HUAWEI.COM>
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Date: Thu, 26 Feb 2004 16:34:53 +0800
From: Zhao Bo <zbo@huawei.com>
Subject: Re: TDM Hairpinning; Re: [Megaco] Hairpin case A/u Law conversion
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From megaco-admin@ietf.org  Thu Feb 26 08:08:32 2004
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Date: Thu, 26 Feb 2004 08:05:01 -0500
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From: Tom Taylor <taylor@nortelnetworks.com>
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To: Zhao Bo <zbo@huawei.com>
CC: Albrecht.Schwarz@alcatel.de, megaco@ietf.org
Subject: Re: TDM Hairpinning; Re: [Megaco] Hairpin case A/u Law conversion
References: <OF05CA6B89.916CDD49-ONC1256E45.004B81A2@netfr.alcatel.fr> <000401c3fc43$68abbe00$f8486e0a@HUAWEI.COM>
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I think you would do it by specifying the CLEARMODE codec in the Local an=
d Remote=20
descriptors.  Unfortunately, CLEARMODE is still under consideration by th=
e IESG=20
and hasn't reached RFC status.

Zhao Bo wrote:
> Dear Albrecht:
>     Is there any H.248 package defined to signal the UDI transparency p=
roperties in TDM hairping case? =20
>     Best regards
>=20
> ----- Original Message -----=20
> From: <Albrecht.Schwarz@alcatel.de>
> To: "Zhao Bo" <zbo@huawei.com>
> Cc: <megaco@ietf.org>; <megaco-admin@ietf.org>
> Sent: Wednesday, February 25, 2004 10:24 PM
> Subject: TDM Hairpinning; Re: [Megaco] Hairpin case A/u Law conversion
>=20
>=20
>=20
> Dear Zhao Bo,
>=20
> because there isn't any "hairpinning" definition in MEGACOP/H.248 stand=
ards
> ("please correct if I'm wrong"), I'd like to use the following one for
> responding your questions:
>=20
> ***********************************************************************=
************
> Definition:
> TDM Hairpinning
> ? is a scenario whereby a call is being made between two TDM endpoints =
on a
>     single media gateway. The media comes in on one TDM channel and goe=
s
>     out on another TDM channel through the use of an internal loop in t=
he
>     media gateway.
>=20
> Note 1: due to the fact that there are local call types at local exchan=
ges
> (CLASS5), and transit exchanges (CLASS4) in legacy TDM networks (PSTN,
> NISDN, etc), there is a variety of TDM-to-TDM connection types behind t=
he
> general "TDM hairpinning" capability (dependent on required type of IWF=
,
> etc.) in corresponding H.248 MG types
>=20
> Note 2: H.248/MEGCOP perspective
> TDM Hairpinning =3D Single H.248 Context with 2 H.248 TDM Terminations
> ***********************************************************************=
*************
>=20
> Based on this hairpinning understanding, my answers are:
>=20
> (1) Speech telephony service: G.711 companding formats are a property o=
f
> the corresponding H.248 TDM termination
>=20
> [Note: dependent on MG architecture and implementation, property might =
be
> signalled or preprovisioned. Of course, G.711 companding law is an inhe=
rent
> property of your DS0 channel at your PDH/SDH/SONET framer; the way, how
> this DS0 property is associated with the corresponding H.248 TDM
> Termination property may only realized MG-internally for very specific =
MG
> architectures. Generally it is up to the MGC, particularly if some (or =
all)
> DS0's are ISDN B channels.]
>=20
> (2) Voiceband Data services: same as in (1)
>=20
> [Note: VBD according new ITU-T V.152 -> "... For purposes of
> interoperability, a V.152 compliant implementation shall support at lea=
st
> both G.711 A-law and G.711 =EC-law codecs as VBD codecs. "]
>=20
> (3) ISDN UDI =3D all ISDN Teleservices with ISDN I.231. bearer service
> requirement
> =3D> H.248 TDM Termination property must be signalled by MGC, if not, M=
G may
> not guarantee UDI capability (i.e., fully transparent 64-kbit/s bearer
> channel) in TDM hairpinning scenarios ...
>=20
>=20
> Conclusion:
> IF your MG is supporting
> PSTN lines (=3D H.248 ALN Termination),
> PSTN trunks (=3D H.248 TDM Termination), and
> ISDN B channels (=3D H.248 TDM Termination)
>=20
> AND IF you've such services and interworking requirements
>=20
> THEN you should generally signal the corresponding properties ...
>=20
> ... in case of
> TDM hairpinning,
> ALN hairpinning, or
> ALN-to-TDM connection types.
>=20
> Regards,
> Albrecht
>=20
> ALCATEL
>=20
>=20
>=20
>=20
>                                                                        =
                                                                         =
   =20
>                       Zhao Bo                                          =
                                                                         =
   =20
>                       <zbo@huawei.com>         To:      megaco@ietf.org=
                                                                         =
   =20
>                       Sent by:                 cc:                     =
                                                                         =
   =20
>                       megaco-admin@iet         Subject: [Megaco] Hairpi=
n case A/u Law conversion                                                =
   =20
>                       f.org                                            =
                                                                         =
   =20
>                                                                        =
                                                                         =
   =20
>                                                                        =
                                                                         =
   =20
>                       25.02.2004 08:11                                 =
                                                                         =
   =20
>                                                                        =
                                                                         =
   =20
>                                                                        =
                                                                         =
   =20
>=20
>=20
>=20
>=20
> In this case, the A/u law format of a TDM ciruit can be provisioned,  b=
ut
> the MG doesn't know the service type of a call, thus
> has no way to know if a conversion is needed. For speech service conver=
sion
> may be needed; for data service like isdn UDI, conversion is not permit=
ted.
> Is there any method to solve this problem?
>=20
> Zhao Bo
>=20
> *****************************************************************
> This e-mail and its attachments contain confidential information from
> HUAWEI, which is intended only for the person or entity whose address i=
s
> listed above. Any use of the information contained herein in any way
> (including, but not limited to, total or partial disclosure, reproducti=
on,
> or dissemination) by persons other than the intended recipient(s) is
> prohibited. If you receive this e-mail in error, please notify the send=
er
> by phone or email immediately and delete it!
> *****************************************************************
>=20
> _______________________________________________
> Megaco mailing list
> Megaco@ietf.org
> https://www1.ietf.org/mailman/listinfo/megaco
>=20
>=20
>=20
>=20
>=20
>=20
> _______________________________________________
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> Megaco@ietf.org
> https://www1.ietf.org/mailman/listinfo/megaco
> 1=E8=1Ar=89=9A=8AX=A7=82X=AC=B4=C7 i=CA"z=D7=E8=AE=08m=B6=9B?=FF=0C0=D6=
'=AD~=8A=E0=FEf=A2=96f=A7=FEX=AC=B6)=DF=A3=F9=9E=81=A7(

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Date: Thu, 26 Feb 2004 08:05:01 -0500
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From: Tom Taylor <taylor@nortelnetworks.com>
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To: Zhao Bo <zbo@huawei.com>
CC: Albrecht.Schwarz@alcatel.de, megaco@ietf.org
Subject: Re: TDM Hairpinning; Re: [Megaco] Hairpin case A/u Law conversion
References: <OF05CA6B89.916CDD49-ONC1256E45.004B81A2@netfr.alcatel.fr> <000401c3fc43$68abbe00$f8486e0a@HUAWEI.COM>
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I think you would do it by specifying the CLEARMODE codec in the Local an=
d Remote=20
descriptors.  Unfortunately, CLEARMODE is still under consideration by th=
e IESG=20
and hasn't reached RFC status.

Zhao Bo wrote:
> Dear Albrecht:
>     Is there any H.248 package defined to signal the UDI transparency p=
roperties in TDM hairping case? =20
>     Best regards
>=20
> ----- Original Message -----=20
> From: <Albrecht.Schwarz@alcatel.de>
> To: "Zhao Bo" <zbo@huawei.com>
> Cc: <megaco@ietf.org>; <megaco-admin@ietf.org>
> Sent: Wednesday, February 25, 2004 10:24 PM
> Subject: TDM Hairpinning; Re: [Megaco] Hairpin case A/u Law conversion
>=20
>=20
>=20
> Dear Zhao Bo,
>=20
> because there isn't any "hairpinning" definition in MEGACOP/H.248 stand=
ards
> ("please correct if I'm wrong"), I'd like to use the following one for
> responding your questions:
>=20
> ***********************************************************************=
************
> Definition:
> TDM Hairpinning
> ? is a scenario whereby a call is being made between two TDM endpoints =
on a
>     single media gateway. The media comes in on one TDM channel and goe=
s
>     out on another TDM channel through the use of an internal loop in t=
he
>     media gateway.
>=20
> Note 1: due to the fact that there are local call types at local exchan=
ges
> (CLASS5), and transit exchanges (CLASS4) in legacy TDM networks (PSTN,
> NISDN, etc), there is a variety of TDM-to-TDM connection types behind t=
he
> general "TDM hairpinning" capability (dependent on required type of IWF=
,
> etc.) in corresponding H.248 MG types
>=20
> Note 2: H.248/MEGCOP perspective
> TDM Hairpinning =3D Single H.248 Context with 2 H.248 TDM Terminations
> ***********************************************************************=
*************
>=20
> Based on this hairpinning understanding, my answers are:
>=20
> (1) Speech telephony service: G.711 companding formats are a property o=
f
> the corresponding H.248 TDM termination
>=20
> [Note: dependent on MG architecture and implementation, property might =
be
> signalled or preprovisioned. Of course, G.711 companding law is an inhe=
rent
> property of your DS0 channel at your PDH/SDH/SONET framer; the way, how
> this DS0 property is associated with the corresponding H.248 TDM
> Termination property may only realized MG-internally for very specific =
MG
> architectures. Generally it is up to the MGC, particularly if some (or =
all)
> DS0's are ISDN B channels.]
>=20
> (2) Voiceband Data services: same as in (1)
>=20
> [Note: VBD according new ITU-T V.152 -> "... For purposes of
> interoperability, a V.152 compliant implementation shall support at lea=
st
> both G.711 A-law and G.711 =EC-law codecs as VBD codecs. "]
>=20
> (3) ISDN UDI =3D all ISDN Teleservices with ISDN I.231. bearer service
> requirement
> =3D> H.248 TDM Termination property must be signalled by MGC, if not, M=
G may
> not guarantee UDI capability (i.e., fully transparent 64-kbit/s bearer
> channel) in TDM hairpinning scenarios ...
>=20
>=20
> Conclusion:
> IF your MG is supporting
> PSTN lines (=3D H.248 ALN Termination),
> PSTN trunks (=3D H.248 TDM Termination), and
> ISDN B channels (=3D H.248 TDM Termination)
>=20
> AND IF you've such services and interworking requirements
>=20
> THEN you should generally signal the corresponding properties ...
>=20
> ... in case of
> TDM hairpinning,
> ALN hairpinning, or
> ALN-to-TDM connection types.
>=20
> Regards,
> Albrecht
>=20
> ALCATEL
>=20
>=20
>=20
>=20
>                                                                        =
                                                                         =
   =20
>                       Zhao Bo                                          =
                                                                         =
   =20
>                       <zbo@huawei.com>         To:      megaco@ietf.org=
                                                                         =
   =20
>                       Sent by:                 cc:                     =
                                                                         =
   =20
>                       megaco-admin@iet         Subject: [Megaco] Hairpi=
n case A/u Law conversion                                                =
   =20
>                       f.org                                            =
                                                                         =
   =20
>                                                                        =
                                                                         =
   =20
>                                                                        =
                                                                         =
   =20
>                       25.02.2004 08:11                                 =
                                                                         =
   =20
>                                                                        =
                                                                         =
   =20
>                                                                        =
                                                                         =
   =20
>=20
>=20
>=20
>=20
> In this case, the A/u law format of a TDM ciruit can be provisioned,  b=
ut
> the MG doesn't know the service type of a call, thus
> has no way to know if a conversion is needed. For speech service conver=
sion
> may be needed; for data service like isdn UDI, conversion is not permit=
ted.
> Is there any method to solve this problem?
>=20
> Zhao Bo
>=20
> *****************************************************************
> This e-mail and its attachments contain confidential information from
> HUAWEI, which is intended only for the person or entity whose address i=
s
> listed above. Any use of the information contained herein in any way
> (including, but not limited to, total or partial disclosure, reproducti=
on,
> or dissemination) by persons other than the intended recipient(s) is
> prohibited. If you receive this e-mail in error, please notify the send=
er
> by phone or email immediately and delete it!
> *****************************************************************
>=20
> _______________________________________________
> Megaco mailing list
> Megaco@ietf.org
> https://www1.ietf.org/mailman/listinfo/megaco
>=20
>=20
>=20
>=20
>=20
>=20
> _______________________________________________
> Megaco mailing list
> Megaco@ietf.org
> https://www1.ietf.org/mailman/listinfo/megaco
> 1=E8=1Ar=89=9A=8AX=A7=82X=AC=B4=C7 i=CA"z=D7=E8=AE=08m=B6=9B?=FF=0C0=D6=
'=AD~=8A=E0=FEf=A2=96f=A7=FEX=AC=B6)=DF=A3=F9=9E=81=A7(

_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco



From megaco-admin@ietf.org  Thu Feb 26 10:08:32 2004
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Subject: Signaling of UDI rsp Clearmode Bearer Service; Re: TDM Hairpinning; Re: [Megaco] Hairpin
 case A/u Law conversion
To: Zhao Bo <zbo@huawei.com>, Tom Taylor <taylor@nortelnetworks.com>
Cc: megaco@ietf.org
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Subject: [Megaco] SIP MEGACO interworking
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I have a question about dealing with differences between SIP and MEGACO
SDP formats.  I noticed there was a similar thread about this not too long
ago.
http://www.ietf.org/mail-archive/working-groups/megaco/current/msg04724.html
I believe it ended with the point that the MGC needed to do some massaging.

My specific issue is with T.38.   The "SIP Support for real-time Fax"
document
has 1 session with multiple media session-levels.  The T.38 document p34
indicates the 
media lines MUST be separated by a version descriptor.  Given the
incompatible
formats I believe the MGC must do some massaging.  
Is this correct?
Should the MG just handle both cases?
Is there a SIP/MEGACO interworking document?

Thanks,
Carl

Carl Rutter
Telica, Inc.
Building G, Suite 100
734 Forest Street
Marlboro, MA 01752
Email crutter@telica.com
Voice 508-480-0909 x8178
Fax 508-480-0922 
www.telica.com




_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco


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From: Carl Rutter <crutter@telica.com>
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Subject: [Megaco] SIP MEGACO interworking
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I have a question about dealing with differences between SIP and MEGACO
SDP formats.  I noticed there was a similar thread about this not too long
ago.
http://www.ietf.org/mail-archive/working-groups/megaco/current/msg04724.html
I believe it ended with the point that the MGC needed to do some massaging.

My specific issue is with T.38.   The "SIP Support for real-time Fax"
document
has 1 session with multiple media session-levels.  The T.38 document p34
indicates the 
media lines MUST be separated by a version descriptor.  Given the
incompatible
formats I believe the MGC must do some massaging.  
Is this correct?
Should the MG just handle both cases?
Is there a SIP/MEGACO interworking document?

Thanks,
Carl

Carl Rutter
Telica, Inc.
Building G, Suite 100
734 Forest Street
Marlboro, MA 01752
Email crutter@telica.com
Voice 508-480-0909 x8178
Fax 508-480-0922 
www.telica.com




_______________________________________________
Megaco mailing list
Megaco@ietf.org
https://www1.ietf.org/mailman/listinfo/megaco



From megaco-admin@ietf.org  Thu Feb 26 11:00:37 2004
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From: Tom Taylor <taylor@nortelnetworks.com>
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To: Albrecht.Schwarz@alcatel.de
CC: Zhao Bo <zbo@huawei.com>, megaco@ietf.org
Subject: Re: Signaling of UDI rsp Clearmode Bearer Service; Re: TDM Hairpinning;
 Re: [Megaco] Hairpin case A/u Law conversion
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I intended a reference to draft-ietf-avt-rtp-clearmode-04.txt in my inter=
vention.=20
  My old draft has been allowed to expire because it did not seem to be o=
f much=20
interest to the community.

You are right: the draft just referred to doesn't apply to TDM, only to t=
he packet=20
side.  I wasn't thinking.  I agree that in the absence of the attributes =
provided=20
in my old draft, TDM bearer characteristics are assumed rather than signa=
lled=20
explicitly.

Albrecht.Schwarz@alcatel.de wrote:

> I think that the question is, whether this specific TDM bearer capabili=
ty
> should be (1) explicitly signalled, or whether (2) implicit assumption =
is
> already sufficient.
>=20
> With regard to (1), Tom, I guess that your refer to
>=20
> * RTP/CLEARMODE
>   RTP payload format for a 64 kbit/s transparent call
>   http://www.ietf.org/internet-drafts/draft-ietf-avt-rtp-clearmode-04.t=
xt
>=20
> But, this coming RFC may not be directly applied, e.g., packetization t=
ime
> parameter isn't applicable IMHO. Pls correct me if wrong.
>=20
> Or do you refer to your proposals in your expired draft wrt
> * TDM/CLEARMODE
>   Conventions for the use of the Session Description Protocol (SDP)
>   for Digital Circuit Connections
>   http://www.watersprings.org/pub/id/draft-taylor-mmusic-sdp-tdm-01.txt
>=20
> My conclusion is, that an explicit signalling method doesn't exist toda=
y
> ("exception might be Q.1950").
> Even though, an explicit TDM Media Descriptor for I.231.1  might be hel=
pful
> for unambigously specification in certain MG implementations.
>=20
>=20
> With regard to (2):
> Implicit signaling is in my understanding the situation of today. In ca=
se
> of, (a) missing TDM Media Descriptors, or (b) "identical TDM Media
> Descriptors with transparent channel indications", when a transparent
> 64-kbit/s bearer connection may be established.
> Sometimes this is also called "native TDM switching", or "native TDM
> hairpinning", but technically it is exactly representing an ISDN B chan=
nel
> with I.231.1 bearer service. [=3D> the channel may bypass the DSP, but =
in
> case that a DSP is looped-in, then must be the DSP channel operation mo=
de
> configured for 'Clearmode']
>=20
> Last comment:
> Such kind of implicit signalling mechanism is often assumed in telco
> industry, because this is the legacy signaling mechanism within a TDM
> switch ("if there aren't any signaled bearer capabilities then transpar=
ent
> channel; any needed bearer capability in addition must be explicitly
> signalled, like signal processing network equipment functions, e.g., EC=
").
>=20
> TDM hairpinning means, an "H.248-controlled TDM switching function" fro=
m
> H.248 Media Gateway perspective. Hence, this implicit signalling assump=
tion
> may be still valid, or do you see any needs for explicit signaling
> codepoints in case of TDM-to-TDM ISDN I.231.1 calls?
>=20
> Regards
>=20
> Albrecht
>=20
>=20
>=20
>=20
>=20
>=20
>                                                                        =
                                                                         =
   =20
>                       Tom Taylor                                       =
                                                                         =
   =20
>                       <taylor@nortelne         To:      Zhao Bo <zbo@hu=
awei.com>                                                                =
   =20
>                       tworks.com>              cc:      Albrecht SCHWAR=
Z/DE/ALCATEL@ALCATEL, megaco@ietf.org                                    =
   =20
>                                                Subject: Re: TDM Hairpin=
ning; Re: [Megaco] Hairpin case A/u Law conversion                       =
   =20
>                       26.02.2004 14:05                                 =
                                                                         =
   =20
>                                                                        =
                                                                         =
   =20
>                                                                        =
                                                                         =
   =20
>=20
>=20
>=20
>=20
> I think you would do it by specifying the CLEARMODE codec in the Local =
and
> Remote
> descriptors.  Unfortunately, CLEARMODE is still under consideration by =
the
> IESG
> and hasn't reached RFC status.
>=20
> Zhao Bo wrote:
>=20
>>Dear Albrecht:
>>    Is there any H.248 package defined to signal the UDI transparency
>=20
> properties in TDM hairping case?
>=20
>>    Best regards
>>
>>----- Original Message -----
>>From: <Albrecht.Schwarz@alcatel.de>
>>To: "Zhao Bo" <zbo@huawei.com>
>>Cc: <megaco@ietf.org>; <megaco-admin@ietf.org>
>>Sent: Wednesday, February 25, 2004 10:24 PM
>>Subject: TDM Hairpinning; Re: [Megaco] Hairpin case A/u Law conversion
>>
>>
>>
>>Dear Zhao Bo,
>>
>>because there isn't any "hairpinning" definition in MEGACOP/H.248
>=20
> standards
>=20
>>("please correct if I'm wrong"), I'd like to use the following one for
>>responding your questions:
>>
>>
>=20
> ***********************************************************************=
************
>=20
>=20
>>Definition:
>>TDM Hairpinning
>>? is a scenario whereby a call is being made between two TDM endpoints =
on
>=20
> a
>=20
>>    single media gateway. The media comes in on one TDM channel and goe=
s
>>    out on another TDM channel through the use of an internal loop in t=
he
>>    media gateway.
>>
>>Note 1: due to the fact that there are local call types at local
>=20
> exchanges
>=20
>>(CLASS5), and transit exchanges (CLASS4) in legacy TDM networks (PSTN,
>>NISDN, etc), there is a variety of TDM-to-TDM connection types behind t=
he
>>general "TDM hairpinning" capability (dependent on required type of IWF=
,
>>etc.) in corresponding H.248 MG types
>>
>>Note 2: H.248/MEGCOP perspective
>>TDM Hairpinning =3D Single H.248 Context with 2 H.248 TDM Terminations
>>
>=20
> ***********************************************************************=
*************
>=20
>=20
>>Based on this hairpinning understanding, my answers are:
>>
>>(1) Speech telephony service: G.711 companding formats are a property o=
f
>>the corresponding H.248 TDM termination
>>
>>[Note: dependent on MG architecture and implementation, property might =
be
>>signalled or preprovisioned. Of course, G.711 companding law is an
>=20
> inherent
>=20
>>property of your DS0 channel at your PDH/SDH/SONET framer; the way, how
>>this DS0 property is associated with the corresponding H.248 TDM
>>Termination property may only realized MG-internally for very specific =
MG
>>architectures. Generally it is up to the MGC, particularly if some (or
>=20
> all)
>=20
>>DS0's are ISDN B channels.]
>>
>>(2) Voiceband Data services: same as in (1)
>>
>>[Note: VBD according new ITU-T V.152 -> "... For purposes of
>>interoperability, a V.152 compliant implementation shall support at lea=
st
>>both G.711 A-law and G.711 =C3=AC-law codecs as VBD codecs. "]
>>
>>(3) ISDN UDI =3D all ISDN Teleservices with ISDN I.231. bearer service
>>requirement
>>=3D> H.248 TDM Termination property must be signalled by MGC, if not, M=
G
>=20
> may
>=20
>>not guarantee UDI capability (i.e., fully transparent 64-kbit/s bearer
>>channel) in TDM hairpinning scenarios ...
>>
>>
>>Conclusion:
>>IF your MG is supporting
>>PSTN lines (=3D H.248 ALN Termination),
>>PSTN trunks (=3D H.248 TDM Termination), and
>>ISDN B channels (=3D H.248 TDM Termination)
>>
>>AND IF you've such services and interworking requirements
>>
>>THEN you should generally signal the corresponding properties ...
>>
>>... in case of
>>TDM hairpinning,
>>ALN hairpinning, or
>>ALN-to-TDM connection types.
>>
>>Regards,
>>Albrecht
>>
>>ALCATEL
>>
>>
>>
>>
>>
>=20
>=20
>>                      Zhao Bo
>=20
>=20
>>                      <zbo@huawei.com>         To:      megaco@ietf.org
>=20
>=20
>>                      Sent by:                 cc:
>=20
>=20
>>                      megaco-admin@iet         Subject: [Megaco] Hairpi=
n
>=20
> case A/u Law conversion
>=20
>>                      f.org
>=20
>=20
>=20
>=20
>>                      25.02.2004 08:11
>=20
>=20
>=20
>=20
>>
>>
>>
>>In this case, the A/u law format of a TDM ciruit can be provisioned,  b=
ut
>>the MG doesn't know the service type of a call, thus
>>has no way to know if a conversion is needed. For speech service
>=20
> conversion
>=20
>>may be needed; for data service like isdn UDI, conversion is not
>=20
> permitted.
>=20
>>Is there any method to solve this problem?
>>
>>Zhao Bo
>>
>>*****************************************************************
>>This e-mail and its attachments contain confidential information from
>>HUAWEI, which is intended only for the person or entity whose address i=
s
>>listed above. Any use of the information contained herein in any way
>>(including, but not limited to, total or partial disclosure,
>=20
> reproduction,
>=20
>>or dissemination) by persons other than the intended recipient(s) is
>>prohibited. If you receive this e-mail in error, please notify the send=
er
>>by phone or email immediately and delete it!
>>*****************************************************************
>>
>>_______________________________________________
>>Megaco mailing list
>>Megaco@ietf.org
>>https://www1.ietf.org/mailman/listinfo/megaco
>>
>>
>>
>>
>>
>>
>>_______________________________________________
>>Megaco mailing list
>>Megaco@ietf.org
>>https://www1.ietf.org/mailman/listinfo/megaco
>>1=C3=A8=1Ar=E2=80=B0=C5=A1=C5=A0X=C2=A7=E2=80=9AX=C2=AC=C2=B4=C3=87 i=C3=
=8A"z=C3=97=C3=A8=C2=AE=08m=C2=B6=E2=80=BA?=C3=BF=0C0=C3=96'=C2=AD~=C5=A0=
=C3=A0=C3=BEf=C2=A2=E2=80=93f=C2=A7=C3=BEX=C2=AC=C2=B6)=C3=9F=C2=A3=C3=B9=
=C5=BE=EF=A2=9D=C2=A7(
>=20
>=20
>=20
>=20

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From: Tom Taylor <taylor@nortelnetworks.com>
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To: Albrecht.Schwarz@alcatel.de
CC: Zhao Bo <zbo@huawei.com>, megaco@ietf.org
Subject: Re: Signaling of UDI rsp Clearmode Bearer Service; Re: TDM Hairpinning;
 Re: [Megaco] Hairpin case A/u Law conversion
References: <OFED8FE275.8B32B6FF-ONC1256E46.004AAB4D@netfr.alcatel.fr>
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I intended a reference to draft-ietf-avt-rtp-clearmode-04.txt in my inter=
vention.=20
  My old draft has been allowed to expire because it did not seem to be o=
f much=20
interest to the community.

You are right: the draft just referred to doesn't apply to TDM, only to t=
he packet=20
side.  I wasn't thinking.  I agree that in the absence of the attributes =
provided=20
in my old draft, TDM bearer characteristics are assumed rather than signa=
lled=20
explicitly.

Albrecht.Schwarz@alcatel.de wrote:

> I think that the question is, whether this specific TDM bearer capabili=
ty
> should be (1) explicitly signalled, or whether (2) implicit assumption =
is
> already sufficient.
>=20
> With regard to (1), Tom, I guess that your refer to
>=20
> * RTP/CLEARMODE
>   RTP payload format for a 64 kbit/s transparent call
>   http://www.ietf.org/internet-drafts/draft-ietf-avt-rtp-clearmode-04.t=
xt
>=20
> But, this coming RFC may not be directly applied, e.g., packetization t=
ime
> parameter isn't applicable IMHO. Pls correct me if wrong.
>=20
> Or do you refer to your proposals in your expired draft wrt
> * TDM/CLEARMODE
>   Conventions for the use of the Session Description Protocol (SDP)
>   for Digital Circuit Connections
>   http://www.watersprings.org/pub/id/draft-taylor-mmusic-sdp-tdm-01.txt
>=20
> My conclusion is, that an explicit signalling method doesn't exist toda=
y
> ("exception might be Q.1950").
> Even though, an explicit TDM Media Descriptor for I.231.1  might be hel=
pful
> for unambigously specification in certain MG implementations.
>=20
>=20
> With regard to (2):
> Implicit signaling is in my understanding the situation of today. In ca=
se
> of, (a) missing TDM Media Descriptors, or (b) "identical TDM Media
> Descriptors with transparent channel indications", when a transparent
> 64-kbit/s bearer connection may be established.
> Sometimes this is also called "native TDM switching", or "native TDM
> hairpinning", but technically it is exactly representing an ISDN B chan=
nel
> with I.231.1 bearer service. [=3D> the channel may bypass the DSP, but =
in
> case that a DSP is looped-in, then must be the DSP channel operation mo=
de
> configured for 'Clearmode']
>=20
> Last comment:
> Such kind of implicit signalling mechanism is often assumed in telco
> industry, because this is the legacy signaling mechanism within a TDM
> switch ("if there aren't any signaled bearer capabilities then transpar=
ent
> channel; any needed bearer capability in addition must be explicitly
> signalled, like signal processing network equipment functions, e.g., EC=
").
>=20
> TDM hairpinning means, an "H.248-controlled TDM switching function" fro=
m
> H.248 Media Gateway perspective. Hence, this implicit signalling assump=
tion
> may be still valid, or do you see any needs for explicit signaling
> codepoints in case of TDM-to-TDM ISDN I.231.1 calls?
>=20
> Regards
>=20
> Albrecht
>=20
>=20
>=20
>=20
>=20
>=20
>                                                                        =
                                                                         =
   =20
>                       Tom Taylor                                       =
                                                                         =
   =20
>                       <taylor@nortelne         To:      Zhao Bo <zbo@hu=
awei.com>                                                                =
   =20
>                       tworks.com>              cc:      Albrecht SCHWAR=
Z/DE/ALCATEL@ALCATEL, megaco@ietf.org                                    =
   =20
>                                                Subject: Re: TDM Hairpin=
ning; Re: [Megaco] Hairpin case A/u Law conversion                       =
   =20
>                       26.02.2004 14:05                                 =
                                                                         =
   =20
>                                                                        =
                                                                         =
   =20
>                                                                        =
                                                                         =
   =20
>=20
>=20
>=20
>=20
> I think you would do it by specifying the CLEARMODE codec in the Local =
and
> Remote
> descriptors.  Unfortunately, CLEARMODE is still under consideration by =
the
> IESG
> and hasn't reached RFC status.
>=20
> Zhao Bo wrote:
>=20
>>Dear Albrecht:
>>    Is there any H.248 package defined to signal the UDI transparency
>=20
> properties in TDM hairping case?
>=20
>>    Best regards
>>
>>----- Original Message -----
>>From: <Albrecht.Schwarz@alcatel.de>
>>To: "Zhao Bo" <zbo@huawei.com>
>>Cc: <megaco@ietf.org>; <megaco-admin@ietf.org>
>>Sent: Wednesday, February 25, 2004 10:24 PM
>>Subject: TDM Hairpinning; Re: [Megaco] Hairpin case A/u Law conversion
>>
>>
>>
>>Dear Zhao Bo,
>>
>>because there isn't any "hairpinning" definition in MEGACOP/H.248
>=20
> standards
>=20
>>("please correct if I'm wrong"), I'd like to use the following one for
>>responding your questions:
>>
>>
>=20
> ***********************************************************************=
************
>=20
>=20
>>Definition:
>>TDM Hairpinning
>>? is a scenario whereby a call is being made between two TDM endpoints =
on
>=20
> a
>=20
>>    single media gateway. The media comes in on one TDM channel and goe=
s
>>    out on another TDM channel through the use of an internal loop in t=
he
>>    media gateway.
>>
>>Note 1: due to the fact that there are local call types at local
>=20
> exchanges
>=20
>>(CLASS5), and transit exchanges (CLASS4) in legacy TDM networks (PSTN,
>>NISDN, etc), there is a variety of TDM-to-TDM connection types behind t=
he
>>general "TDM hairpinning" capability (dependent on required type of IWF=
,
>>etc.) in corresponding H.248 MG types
>>
>>Note 2: H.248/MEGCOP perspective
>>TDM Hairpinning =3D Single H.248 Context with 2 H.248 TDM Terminations
>>
>=20
> ***********************************************************************=
*************
>=20
>=20
>>Based on this hairpinning understanding, my answers are:
>>
>>(1) Speech telephony service: G.711 companding formats are a property o=
f
>>the corresponding H.248 TDM termination
>>
>>[Note: dependent on MG architecture and implementation, property might =
be
>>signalled or preprovisioned. Of course, G.711 companding law is an
>=20
> inherent
>=20
>>property of your DS0 channel at your PDH/SDH/SONET framer; the way, how
>>this DS0 property is associated with the corresponding H.248 TDM
>>Termination property may only realized MG-internally for very specific =
MG
>>architectures. Generally it is up to the MGC, particularly if some (or
>=20
> all)
>=20
>>DS0's are ISDN B channels.]
>>
>>(2) Voiceband Data services: same as in (1)
>>
>>[Note: VBD according new ITU-T V.152 -> "... For purposes of
>>interoperability, a V.152 compliant implementation shall support at lea=
st
>>both G.711 A-law and G.711 =C3=AC-law codecs as VBD codecs. "]
>>
>>(3) ISDN UDI =3D all ISDN Teleservices with ISDN I.231. bearer service
>>requirement
>>=3D> H.248 TDM Termination property must be signalled by MGC, if not, M=
G
>=20
> may
>=20
>>not guarantee UDI capability (i.e., fully transparent 64-kbit/s bearer
>>channel) in TDM hairpinning scenarios ...
>>
>>
>>Conclusion:
>>IF your MG is supporting
>>PSTN lines (=3D H.248 ALN Termination),
>>PSTN trunks (=3D H.248 TDM Termination), and
>>ISDN B channels (=3D H.248 TDM Termination)
>>
>>AND IF you've such services and interworking requirements
>>
>>THEN you should generally signal the corresponding properties ...
>>
>>... in case of
>>TDM hairpinning,
>>ALN hairpinning, or
>>ALN-to-TDM connection types.
>>
>>Regards,
>>Albrecht
>>
>>ALCATEL
>>
>>
>>
>>
>>
>=20
>=20
>>                      Zhao Bo
>=20
>=20
>>                      <zbo@huawei.com>         To:      megaco@ietf.org
>=20
>=20
>>                      Sent by:                 cc:
>=20
>=20
>>                      megaco-admin@iet         Subject: [Megaco] Hairpi=
n
>=20
> case A/u Law conversion
>=20
>>                      f.org
>=20
>=20
>=20
>=20
>>                      25.02.2004 08:11
>=20
>=20
>=20
>=20
>>
>>
>>
>>In this case, the A/u law format of a TDM ciruit can be provisioned,  b=
ut
>>the MG doesn't know the service type of a call, thus
>>has no way to know if a conversion is needed. For speech service
>=20
> conversion
>=20
>>may be needed; for data service like isdn UDI, conversion is not
>=20
> permitted.
>=20
>>Is there any method to solve this problem?
>>
>>Zhao Bo
>>
>>*****************************************************************
>>This e-mail and its attachments contain confidential information from
>>HUAWEI, which is intended only for the person or entity whose address i=
s
>>listed above. Any use of the information contained herein in any way
>>(including, but not limited to, total or partial disclosure,
>=20
> reproduction,
>=20
>>or dissemination) by persons other than the intended recipient(s) is
>>prohibited. If you receive this e-mail in error, please notify the send=
er
>>by phone or email immediately and delete it!
>>*****************************************************************
>>
>>_______________________________________________
>>Megaco mailing list
>>Megaco@ietf.org
>>https://www1.ietf.org/mailman/listinfo/megaco
>>
>>
>>
>>
>>
>>
>>_______________________________________________
>>Megaco mailing list
>>Megaco@ietf.org
>>https://www1.ietf.org/mailman/listinfo/megaco
>>1=C3=A8=1Ar=E2=80=B0=C5=A1=C5=A0X=C2=A7=E2=80=9AX=C2=AC=C2=B4=C3=87 i=C3=
=8A"z=C3=97=C3=A8=C2=AE=08m=C2=B6=E2=80=BA?=C3=BF=0C0=C3=96'=C2=AD~=C5=A0=
=C3=A0=C3=BEf=C2=A2=E2=80=93f=C2=A7=C3=BEX=C2=AC=C2=B6)=C3=9F=C2=A3=C3=B9=
=C5=BE=EF=A2=9D=C2=A7(
>=20
>=20
>=20
>=20

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From megaco-admin@ietf.org  Thu Feb 26 11:37:29 2004
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Date: Thu, 26 Feb 2004 11:34:27 -0500
From: Troy Cauble <troy@bell-labs.com>
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To: Carl Rutter <crutter@telica.com>
Original-CC: megaco@ietf.org
Subject: Re: [Megaco] SIP MEGACO interworking
References: <C9AFC8E904D49C4593EB077A2E8402BA03506448@wench.telica.com>
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Carl Rutter wrote:
> I have a question about dealing with differences between SIP and MEGACO
> SDP formats.  I noticed there was a similar thread about this not too long
> ago.
> http://www.ietf.org/mail-archive/working-groups/megaco/current/msg04724.html
> I believe it ended with the point that the MGC needed to do some massaging.
> 
> My specific issue is with T.38.   The "SIP Support for real-time Fax"
> document
> has 1 session with multiple media session-levels.  The T.38 document p34
> indicates the 
> media lines MUST be separated by a version descriptor.  Given the
> incompatible
> formats I believe the MGC must do some massaging.  
> Is this correct?
> Should the MG just handle both cases?
> Is there a SIP/MEGACO interworking document?
> 
> Thanks,
> Carl

I don't know about the T.38 question.  But I suspect that if you look 
very closely at the semantics of SDP usage in MEGACO and SIP, you'll 
find more basic reasons for an interworking MGC to massage the SDP. 
Sure, they both borrowed the SDP *syntax*... (Actually, MEGACO twists 
*that* pretty hard...)

I may be wrong.  I may be mixing in some MGCP interworking issues.  But 
I would look closely at.

Does the sending port have to be the receiving port?
Is the m=line a preference ordered list?
Am I expressing the list of codecs I'm willing to receive, or
willing to send and receive?
Must the payload types be the same in both directions?
Are the return SDP ("answer") codecs a subset of the initial SDP ("offer")?
How do you express putting a stream "on hold"?
How are multiple media streams an multiple sessions handled?
Do you have a=rtpmap lines for static payload types?

Doesn't MEGACO allow you to leave out whole lines that are required
in the SDP RFC and in SIP?



-troy

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Subject: Re: [Megaco] SIP MEGACO interworking
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Carl Rutter wrote:
> I have a question about dealing with differences between SIP and MEGACO
> SDP formats.  I noticed there was a similar thread about this not too long
> ago.
> http://www.ietf.org/mail-archive/working-groups/megaco/current/msg04724.html
> I believe it ended with the point that the MGC needed to do some massaging.
> 
> My specific issue is with T.38.   The "SIP Support for real-time Fax"
> document
> has 1 session with multiple media session-levels.  The T.38 document p34
> indicates the 
> media lines MUST be separated by a version descriptor.  Given the
> incompatible
> formats I believe the MGC must do some massaging.  
> Is this correct?
> Should the MG just handle both cases?
> Is there a SIP/MEGACO interworking document?
> 
> Thanks,
> Carl

I don't know about the T.38 question.  But I suspect that if you look 
very closely at the semantics of SDP usage in MEGACO and SIP, you'll 
find more basic reasons for an interworking MGC to massage the SDP. 
Sure, they both borrowed the SDP *syntax*... (Actually, MEGACO twists 
*that* pretty hard...)

I may be wrong.  I may be mixing in some MGCP interworking issues.  But 
I would look closely at.

Does the sending port have to be the receiving port?
Is the m=line a preference ordered list?
Am I expressing the list of codecs I'm willing to receive, or
willing to send and receive?
Must the payload types be the same in both directions?
Are the return SDP ("answer") codecs a subset of the initial SDP ("offer")?
How do you express putting a stream "on hold"?
How are multiple media streams an multiple sessions handled?
Do you have a=rtpmap lines for static payload types?

Doesn't MEGACO allow you to leave out whole lines that are required
in the SDP RFC and in SIP?



-troy

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To: "'Troy Cauble'" <troy@bell-labs.com>, Carl Rutter <crutter@telica.com>
Cc: megaco@ietf.org
Subject: RE: [Megaco] SIP MEGACO interworking
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Hi,

Comments inline ([CHH])

>Carl Rutter wrote:
>>I have a question about dealing with differences between 
>>SIP and MEGACO SDP formats.  I noticed there was a similar thread about 
>>this not too long ago.
>> 
>>http://www.ietf.org/mail-archive/working-groups/megaco/currentmsg04724.html
>>I believe it ended with the point that the MGC needed to do 
>>some massaging.
>> 
>>My specific issue is with T.38.   The "SIP Support for 
>>real-time Fax" document has 1 session with multiple media session-levels.  The T.38 
>>document p34 indicates the media lines MUST be separated by a version descriptor.  Given the
>>incompatible formats I believe the MGC must do some massaging.  
>>Is this correct?
>>Should the MG just handle both cases?
>>Is there a SIP/MEGACO interworking document?
>I don't know about the T.38 question.  But I suspect that if you look 
>very closely at the semantics of SDP usage in MEGACO and SIP, you'll 
>find more basic reasons for an interworking MGC to massage the SDP. 
>Sure, they both borrowed the SDP *syntax*... (Actually, MEGACO twists 
>*that* pretty hard...)

[CHH] In H.248 you must, as you said, separate the m= lines (one for audio, one for t38 fax) with v= lines. In SIP you don't have to do that (you can have multiple m= lines under a single v= line) so your controller will have to do some SDP "restructuring".

[CHH] Having said that, the H.248 spec actually at one point does say that a node shall be able to handle a RFC2327 compliant SDP (which could mean multiple m= lines), which I think is a little confusing. However, we shall remember that this is not the only way where H.248 diverts from the SDP standard, and the H.248 does specify those things. There has been discussions if/how things related to the H.248 SDP handling could be clarified, though.
 
>Does the sending port have to be the receiving port?

[CHH] I don't think that the H.248 spec (nor the SDP spec) specifies that. I know that many nodes do, and eg the G.799.1 media gateway spec requires it.

>Is the m=line a preference ordered list?
>Am I expressing the list of codecs I'm willing to receive, or
>willing to send and receive?

[CHH] In H.248 I believe you are specifying the codecs you want to "reserve resources" for, and the mode property then indicates the media direction. In SDP you indicate which codecs you are able to receive (which, in practic, mostly also means the codecs you are able to send). Please note that H.248 uses SDP for "controlling" another node, and not only for offer/answer two-party negotiation.

>Must the payload types be the same in both directions?

[CHH] This issue came up at a SIPit interop event once, and the answer was no.

>Are the return SDP ("answer") codecs a subset of the initial 
>SDP ("offer")?

[CHH] Yes, and you use the ReserveValue property to indicate if you want to use one or as-many-as-possible of the given codecs.

>How do you express putting a stream "on hold"?

[CHH] That depends on where you are situated in the network, I think. "On hold" is pretty much a signalling thing, and if a node receives a "hold" indicator, and is required to eg do something specific with the media, it may use H.248 to do whatever it has to do. I see no reason to define specific H.248 "hold behaviour".

>How are multiple media streams an multiple sessions handled?

[CHH] Could you please clarify? :)

>Do you have a=rtpmap lines for static payload types?

[CHH] You can have, but you're not required to. That is basic SDP, and H.248 doesn't change that behaviour.

>Doesn't MEGACO allow you to leave out whole lines that are required in the SDP RFC and in SIP?

[CHH] Yes, and that is defined in the spec.

[CHH] The SDP issue has been discussed on the list, and at meetings, and as I said earlier, people are looking into if/how things could be clarified, including the SDP "interworking" between protocols like H.248 and SIP.

Regards,

Christer Holmberg
Ericsson Finland



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From: "Christer Holmberg (JO/LMF)" <christer.holmberg@ericsson.com>
To: "'Troy Cauble'" <troy@bell-labs.com>, Carl Rutter <crutter@telica.com>
Cc: megaco@ietf.org
Subject: RE: [Megaco] SIP MEGACO interworking
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Hi,

Comments inline ([CHH])

>Carl Rutter wrote:
>>I have a question about dealing with differences between 
>>SIP and MEGACO SDP formats.  I noticed there was a similar thread about 
>>this not too long ago.
>> 
>>http://www.ietf.org/mail-archive/working-groups/megaco/currentmsg04724.html
>>I believe it ended with the point that the MGC needed to do 
>>some massaging.
>> 
>>My specific issue is with T.38.   The "SIP Support for 
>>real-time Fax" document has 1 session with multiple media session-levels.  The T.38 
>>document p34 indicates the media lines MUST be separated by a version descriptor.  Given the
>>incompatible formats I believe the MGC must do some massaging.  
>>Is this correct?
>>Should the MG just handle both cases?
>>Is there a SIP/MEGACO interworking document?
>I don't know about the T.38 question.  But I suspect that if you look 
>very closely at the semantics of SDP usage in MEGACO and SIP, you'll 
>find more basic reasons for an interworking MGC to massage the SDP. 
>Sure, they both borrowed the SDP *syntax*... (Actually, MEGACO twists 
>*that* pretty hard...)

[CHH] In H.248 you must, as you said, separate the m= lines (one for audio, one for t38 fax) with v= lines. In SIP you don't have to do that (you can have multiple m= lines under a single v= line) so your controller will have to do some SDP "restructuring".

[CHH] Having said that, the H.248 spec actually at one point does say that a node shall be able to handle a RFC2327 compliant SDP (which could mean multiple m= lines), which I think is a little confusing. However, we shall remember that this is not the only way where H.248 diverts from the SDP standard, and the H.248 does specify those things. There has been discussions if/how things related to the H.248 SDP handling could be clarified, though.
 
>Does the sending port have to be the receiving port?

[CHH] I don't think that the H.248 spec (nor the SDP spec) specifies that. I know that many nodes do, and eg the G.799.1 media gateway spec requires it.

>Is the m=line a preference ordered list?
>Am I expressing the list of codecs I'm willing to receive, or
>willing to send and receive?

[CHH] In H.248 I believe you are specifying the codecs you want to "reserve resources" for, and the mode property then indicates the media direction. In SDP you indicate which codecs you are able to receive (which, in practic, mostly also means the codecs you are able to send). Please note that H.248 uses SDP for "controlling" another node, and not only for offer/answer two-party negotiation.

>Must the payload types be the same in both directions?

[CHH] This issue came up at a SIPit interop event once, and the answer was no.

>Are the return SDP ("answer") codecs a subset of the initial 
>SDP ("offer")?

[CHH] Yes, and you use the ReserveValue property to indicate if you want to use one or as-many-as-possible of the given codecs.

>How do you express putting a stream "on hold"?

[CHH] That depends on where you are situated in the network, I think. "On hold" is pretty much a signalling thing, and if a node receives a "hold" indicator, and is required to eg do something specific with the media, it may use H.248 to do whatever it has to do. I see no reason to define specific H.248 "hold behaviour".

>How are multiple media streams an multiple sessions handled?

[CHH] Could you please clarify? :)

>Do you have a=rtpmap lines for static payload types?

[CHH] You can have, but you're not required to. That is basic SDP, and H.248 doesn't change that behaviour.

>Doesn't MEGACO allow you to leave out whole lines that are required in the SDP RFC and in SIP?

[CHH] Yes, and that is defined in the spec.

[CHH] The SDP issue has been discussed on the list, and at meetings, and as I said earlier, people are looking into if/how things could be clarified, including the SDP "interworking" between protocols like H.248 and SIP.

Regards,

Christer Holmberg
Ericsson Finland



This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you.

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From: Zhao Bo <zbo@huawei.com>
Subject: Re: [Megaco] Questions about H.248.17
 "line test packages"(upgrade,sorry, my poor English)
To: Christian Groves <Christian.Groves@ericsson.com>
Cc: megaco@ietf.org
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Hi Chrisitan:
    I studied a simple procedure as follow:

    (1)Testee MG is set to  loopback;
    (2)Tester sends a 1020Hz tone to  testee;
    (3)Tester receive the loopbacked tone, analyze the quality of tone and output a report.

    Suppose the Tester is embeded in MGW. In H.248.17 structure,  the procedure will be.
    (1)Testee MGC set the Testee MGW to loopback.
    (2)Tester MGC signals the Tester to send  1020Hz tone;
    (3)Someone ask Tester MGW to receive loopback tone and make analysis.
    (4)MGW output a report to this "someone".

    Maybe you think O&M should be that "Someone"?  If my understanding is right--in same procedure O&M and  MGC will operate same termination, I think that's quite strange:-)
    
    Best regards
    

----- Original Message ----- 
From: "Christian Groves" <Christian.Groves@ericsson.com>
To: "Zhao Bo" <zbo@huawei.com>
Cc: <megaco@ietf.org>
Sent: Tuesday, February 24, 2004 7:05 AM
Subject: Re: [Megaco] Questions about H.248.17 "line test packages"(upgrade,sorry, my poor English)


> Hello Zhao,
> 
> I'm the editor of H.248.17. Please see my replies below marked [CHG].
> 
> Regards, Christian
> 
> Zhao Bo wrote:
> 
> > Could anyone kindly answer the following questions (I can't find the author's email address in H.248.17 text).
> > 
> > 1. Section 1 "Scope" says:
> > "The detailing of results that are reported (e.g. events and statistics), as well as the timing and mechanisms used for
> > transmitting such records from the MG to the MGC"
> > Why? If a test is initiated by MGC, why not define a protocol to send the measuring result back to MGC?
> 
> [CHG] As the results are related to the physical characteristics of the bearer 
> and not usually interesting to a MGC it was seen that a protocol other than 
> H.248 (or even internal O&M of the MG) was more suitable for this information.
> 
> > 
> > 2.If we have two switch connected with temination T1 and T2
> >     SW1--T1-------T2--SW2
> > Shall the H.248 signal be apllied to T1 and T2, or some extra termination, for example T3 or T4 in the following scenerio:
> > T3--SW1--T1-------T2--SW2--T4
> 
> [CHG] Depends on what you want to test. If all you want to test is the link 
> between T1 and T2 then you only apply signals between T1 & T2.
> 
> > 
> > 3. Section 7.1.1 says:
> > "ITU-T Rec. O.11 describes test responder behaviour. For a description of this behaviour see
> > clause 9."
> > But neither O.11 nor H.247.17 text has a clause 9?
> 
> [CHG] Please see the latest implementors guide for the correction.
> 
> > 
> > Best regards
> > 
> > Zhao Bo
> > 
> > 
> > Zhao Bo
> > 
> > *****************************************************************
> > This e-mail and its attachments contain confidential information from HUAWEI, which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction, or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender by phone or email immediately and delete it!
> > *****************************************************************
> > 
> > _______________________________________________
> > Megaco mailing list
> > Megaco@ietf.org
> > https://www1.ietf.org/mailman/listinfo/megaco
> > 
> 
> 
> This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you.
> 
> E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof.
> 
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Date: Fri, 27 Feb 2004 20:44:45 +0800
From: Zhao Bo <zbo@huawei.com>
Subject: Re: [Megaco] Questions about H.248.17
 "line test packages"(upgrade,sorry, my poor English)
To: Christian Groves <Christian.Groves@ericsson.com>
Cc: megaco@ietf.org
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Hi Chrisitan:
    I studied a simple procedure as follow:

    (1)Testee MG is set to  loopback;
    (2)Tester sends a 1020Hz tone to  testee;
    (3)Tester receive the loopbacked tone, analyze the quality of tone and output a report.

    Suppose the Tester is embeded in MGW. In H.248.17 structure,  the procedure will be.
    (1)Testee MGC set the Testee MGW to loopback.
    (2)Tester MGC signals the Tester to send  1020Hz tone;
    (3)Someone ask Tester MGW to receive loopback tone and make analysis.
    (4)MGW output a report to this "someone".

    Maybe you think O&M should be that "Someone"?  If my understanding is right--in same procedure O&M and  MGC will operate same termination, I think that's quite strange:-)
    
    Best regards
    

----- Original Message ----- 
From: "Christian Groves" <Christian.Groves@ericsson.com>
To: "Zhao Bo" <zbo@huawei.com>
Cc: <megaco@ietf.org>
Sent: Tuesday, February 24, 2004 7:05 AM
Subject: Re: [Megaco] Questions about H.248.17 "line test packages"(upgrade,sorry, my poor English)


> Hello Zhao,
> 
> I'm the editor of H.248.17. Please see my replies below marked [CHG].
> 
> Regards, Christian
> 
> Zhao Bo wrote:
> 
> > Could anyone kindly answer the following questions (I can't find the author's email address in H.248.17 text).
> > 
> > 1. Section 1 "Scope" says:
> > "The detailing of results that are reported (e.g. events and statistics), as well as the timing and mechanisms used for
> > transmitting such records from the MG to the MGC"
> > Why? If a test is initiated by MGC, why not define a protocol to send the measuring result back to MGC?
> 
> [CHG] As the results are related to the physical characteristics of the bearer 
> and not usually interesting to a MGC it was seen that a protocol other than 
> H.248 (or even internal O&M of the MG) was more suitable for this information.
> 
> > 
> > 2.If we have two switch connected with temination T1 and T2
> >     SW1--T1-------T2--SW2
> > Shall the H.248 signal be apllied to T1 and T2, or some extra termination, for example T3 or T4 in the following scenerio:
> > T3--SW1--T1-------T2--SW2--T4
> 
> [CHG] Depends on what you want to test. If all you want to test is the link 
> between T1 and T2 then you only apply signals between T1 & T2.
> 
> > 
> > 3. Section 7.1.1 says:
> > "ITU-T Rec. O.11 describes test responder behaviour. For a description of this behaviour see
> > clause 9."
> > But neither O.11 nor H.247.17 text has a clause 9?
> 
> [CHG] Please see the latest implementors guide for the correction.
> 
> > 
> > Best regards
> > 
> > Zhao Bo
> > 
> > 
> > Zhao Bo
> > 
> > *****************************************************************
> > This e-mail and its attachments contain confidential information from HUAWEI, which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction, or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender by phone or email immediately and delete it!
> > *****************************************************************
> > 
> > _______________________________________________
> > Megaco mailing list
> > Megaco@ietf.org
> > https://www1.ietf.org/mailman/listinfo/megaco
> > 
> 
> 
> This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you.
> 
> E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof.
> 
> 
> _______________________________________________
> Megaco mailing list
> Megaco@ietf.org
> https://www1.ietf.org/mailman/listinfo/megaco

_______________________________________________
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To: Tom Taylor <taylor@nortelnetworks.com>
CC: Albrecht.Schwarz@alcatel.de, Zhao Bo <zbo@huawei.com>, megaco@ietf.org
Subject: Re: Signaling of UDI rsp Clearmode Bearer Service; Re: TDM Hairpinning;
 Re: [Megaco] Hairpin case A/u Law conversion
References: <OFED8FE275.8B32B6FF-ONC1256E46.004AAB4D@netfr.alcatel.fr> <403E1760.2010903@nortelnetworks.com>
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Hello Tom and Albrecht,

What peice of information do you want to signal explicitely? Doesn't TMR =
allow=20
you to specify 64Kbit UDI? If so then its supported by H.248.1 Annex C.9.=
 For=20
H.248 text users this (or any element in Annex C) can be tranferred via=20
H.248.15. Alternatively Q.1950 sect 5.7.1.2 specifies an equivalent encod=
ing.

Regards, Christian

Tom Taylor wrote:

> I intended a reference to draft-ietf-avt-rtp-clearmode-04.txt in my=20
> intervention.  My old draft has been allowed to expire because it did=20
> not seem to be of much interest to the community.
>=20
> You are right: the draft just referred to doesn't apply to TDM, only to=
=20
> the packet side.  I wasn't thinking.  I agree that in the absence of th=
e=20
> attributes provided in my old draft, TDM bearer characteristics are=20
> assumed rather than signalled explicitly.
>=20
> Albrecht.Schwarz@alcatel.de wrote:
>=20
>> I think that the question is, whether this specific TDM bearer capabil=
ity
>> should be (1) explicitly signalled, or whether (2) implicit assumption=
 is
>> already sufficient.
>>
>> With regard to (1), Tom, I guess that your refer to
>>
>> * RTP/CLEARMODE
>>   RTP payload format for a 64 kbit/s transparent call
>>   http://www.ietf.org/internet-drafts/draft-ietf-avt-rtp-clearmode-04.=
txt
>>
>> But, this coming RFC may not be directly applied, e.g., packetization=20
>> time
>> parameter isn't applicable IMHO. Pls correct me if wrong.
>>
>> Or do you refer to your proposals in your expired draft wrt
>> * TDM/CLEARMODE
>>   Conventions for the use of the Session Description Protocol (SDP)
>>   for Digital Circuit Connections
>>   http://www.watersprings.org/pub/id/draft-taylor-mmusic-sdp-tdm-01.tx=
t
>>
>> My conclusion is, that an explicit signalling method doesn't exist tod=
ay
>> ("exception might be Q.1950").
>> Even though, an explicit TDM Media Descriptor for I.231.1  might be=20
>> helpful
>> for unambigously specification in certain MG implementations.
>>
>>
>> With regard to (2):
>> Implicit signaling is in my understanding the situation of today. In c=
ase
>> of, (a) missing TDM Media Descriptors, or (b) "identical TDM Media
>> Descriptors with transparent channel indications", when a transparent
>> 64-kbit/s bearer connection may be established.
>> Sometimes this is also called "native TDM switching", or "native TDM
>> hairpinning", but technically it is exactly representing an ISDN B=20
>> channel
>> with I.231.1 bearer service. [=3D> the channel may bypass the DSP, but=
 in
>> case that a DSP is looped-in, then must be the DSP channel operation m=
ode
>> configured for 'Clearmode']
>>
>> Last comment:
>> Such kind of implicit signalling mechanism is often assumed in telco
>> industry, because this is the legacy signaling mechanism within a TDM
>> switch ("if there aren't any signaled bearer capabilities then=20
>> transparent
>> channel; any needed bearer capability in addition must be explicitly
>> signalled, like signal processing network equipment functions, e.g.,=20
>> EC").
>>
>> TDM hairpinning means, an "H.248-controlled TDM switching function" fr=
om
>> H.248 Media Gateway perspective. Hence, this implicit signalling=20
>> assumption
>> may be still valid, or do you see any needs for explicit signaling
>> codepoints in case of TDM-to-TDM ISDN I.231.1 calls?
>>
>> Regards
>>
>> Albrecht
>>
>>
>>
>>
>>
>>
>>                                                                       =
                                                                         =
    =20
>>                       Tom=20
>> Taylor                                                                =
                                                   =20
>>                       <taylor@nortelne         To:      Zhao Bo=20
>> <zbo@huawei.com>                                                      =
             =20
>>                       tworks.com>              cc:      Albrecht=20
>> SCHWARZ/DE/ALCATEL@ALCATEL,=20
>> megaco@ietf.org                                       =20
>>                                                Subject: Re: TDM=20
>> Hairpinning; Re: [Megaco] Hairpin case A/u Law=20
>> conversion                                                 26.02.2004=20
>> 14:05                                                                 =
                                            =20
>>                                                                       =
                                                                         =
    =20
>>                                                                       =
                                                                         =
    =20
>>
>>
>>
>>
>> I think you would do it by specifying the CLEARMODE codec in the Local=
=20
>> and
>> Remote
>> descriptors.  Unfortunately, CLEARMODE is still under consideration by=
=20
>> the
>> IESG
>> and hasn't reached RFC status.
>>
>> Zhao Bo wrote:
>>
>>> Dear Albrecht:
>>>    Is there any H.248 package defined to signal the UDI transparency
>>
>>
>> properties in TDM hairping case?
>>
>>>    Best regards
>>>
>>> ----- Original Message -----
>>> From: <Albrecht.Schwarz@alcatel.de>
>>> To: "Zhao Bo" <zbo@huawei.com>
>>> Cc: <megaco@ietf.org>; <megaco-admin@ietf.org>
>>> Sent: Wednesday, February 25, 2004 10:24 PM
>>> Subject: TDM Hairpinning; Re: [Megaco] Hairpin case A/u Law conversio=
n
>>>
>>>
>>>
>>> Dear Zhao Bo,
>>>
>>> because there isn't any "hairpinning" definition in MEGACOP/H.248
>>
>>
>> standards
>>
>>> ("please correct if I'm wrong"), I'd like to use the following one fo=
r
>>> responding your questions:
>>>
>>>
>>
>> **********************************************************************=
*************=20
>>
>>
>>
>>> Definition:
>>> TDM Hairpinning
>>> ? is a scenario whereby a call is being made between two TDM=20
>>> endpoints on
>>
>>
>> a
>>
>>>    single media gateway. The media comes in on one TDM channel and go=
es
>>>    out on another TDM channel through the use of an internal loop in =
the
>>>    media gateway.
>>>
>>> Note 1: due to the fact that there are local call types at local
>>
>>
>> exchanges
>>
>>> (CLASS5), and transit exchanges (CLASS4) in legacy TDM networks (PSTN=
,
>>> NISDN, etc), there is a variety of TDM-to-TDM connection types behind=
=20
>>> the
>>> general "TDM hairpinning" capability (dependent on required type of I=
WF,
>>> etc.) in corresponding H.248 MG types
>>>
>>> Note 2: H.248/MEGCOP perspective
>>> TDM Hairpinning =3D Single H.248 Context with 2 H.248 TDM Termination=
s
>>>
>>
>> **********************************************************************=
**************=20
>>
>>
>>
>>> Based on this hairpinning understanding, my answers are:
>>>
>>> (1) Speech telephony service: G.711 companding formats are a property=
 of
>>> the corresponding H.248 TDM termination
>>>
>>> [Note: dependent on MG architecture and implementation, property=20
>>> might be
>>> signalled or preprovisioned. Of course, G.711 companding law is an
>>
>>
>> inherent
>>
>>> property of your DS0 channel at your PDH/SDH/SONET framer; the way, h=
ow
>>> this DS0 property is associated with the corresponding H.248 TDM
>>> Termination property may only realized MG-internally for very=20
>>> specific MG
>>> architectures. Generally it is up to the MGC, particularly if some (o=
r
>>
>>
>> all)
>>
>>> DS0's are ISDN B channels.]
>>>
>>> (2) Voiceband Data services: same as in (1)
>>>
>>> [Note: VBD according new ITU-T V.152 -> "... For purposes of
>>> interoperability, a V.152 compliant implementation shall support at=20
>>> least
>>> both G.711 A-law and G.711 =C3=AC-law codecs as VBD codecs. "]
>>>
>>> (3) ISDN UDI =3D all ISDN Teleservices with ISDN I.231. bearer servic=
e
>>> requirement
>>> =3D> H.248 TDM Termination property must be signalled by MGC, if not,=
 MG
>>
>>
>> may
>>
>>> not guarantee UDI capability (i.e., fully transparent 64-kbit/s beare=
r
>>> channel) in TDM hairpinning scenarios ...
>>>
>>>
>>> Conclusion:
>>> IF your MG is supporting
>>> PSTN lines (=3D H.248 ALN Termination),
>>> PSTN trunks (=3D H.248 TDM Termination), and
>>> ISDN B channels (=3D H.248 TDM Termination)
>>>
>>> AND IF you've such services and interworking requirements
>>>
>>> THEN you should generally signal the corresponding properties ...
>>>
>>> ... in case of
>>> TDM hairpinning,
>>> ALN hairpinning, or
>>> ALN-to-TDM connection types.
>>>
>>> Regards,
>>> Albrecht
>>>
>>> ALCATEL
>>>
>>>
>>>
>>>
>>>
>>
>>
>>>                      Zhao Bo
>>
>>
>>
>>>                      <zbo@huawei.com>         To:      megaco@ietf.or=
g
>>
>>
>>
>>>                      Sent by:                 cc:
>>
>>
>>
>>>                      megaco-admin@iet         Subject: [Megaco] Hairp=
in
>>
>>
>> case A/u Law conversion
>>
>>>                      f.org
>>
>>
>>
>>
>>
>>>                      25.02.2004 08:11
>>
>>
>>
>>
>>
>>>
>>>
>>>
>>> In this case, the A/u law format of a TDM ciruit can be provisioned, =
=20
>>> but
>>> the MG doesn't know the service type of a call, thus
>>> has no way to know if a conversion is needed. For speech service
>>
>>
>> conversion
>>
>>> may be needed; for data service like isdn UDI, conversion is not
>>
>>
>> permitted.
>>
>>> Is there any method to solve this problem?
>>>
>>> Zhao Bo
>>>
>>> *****************************************************************
>>> This e-mail and its attachments contain confidential information from
>>> HUAWEI, which is intended only for the person or entity whose address=
 is
>>> listed above. Any use of the information contained herein in any way
>>> (including, but not limited to, total or partial disclosure,
>>
>>
>> reproduction,
>>
>>> or dissemination) by persons other than the intended recipient(s) is
>>> prohibited. If you receive this e-mail in error, please notify the=20
>>> sender
>>> by phone or email immediately and delete it!
>>> *****************************************************************
>>>
>>> _______________________________________________
>>> Megaco mailing list
>>> Megaco@ietf.org
>>> https://www1.ietf.org/mailman/listinfo/megaco
>>>
>>>
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> Megaco mailing list
>>> Megaco@ietf.org
>>> https://www1.ietf.org/mailman/listinfo/megaco
>>> 1=C3=A8=1Ar=E2=80=B0=C5=A1=C5=A0X=C2=A7=E2=80=9AX=C2=AC=C2=B4=C3=87 i=
=C3=8A"z=C3=97=C3=A8=C2=AE=08m=C2=B6=E2=80=BA?=C3=BF=0C0=C3=96'=C2=AD~=C5=
=A0=C3=A0=C3=BEf=C2=A2=E2=80=93f=C2=A7=C3=BEX=C2=AC=C2=B6)=C3=9F=C2=A3=C3=
=B9=C5=BE=EF=A2=9D=C2=A7(
>>
>>
>>
>>
>>
>=20
> _______________________________________________
> Megaco mailing list
> Megaco@ietf.org
> https://www1.ietf.org/mailman/listinfo/megaco
>=20


This communication is confidential and intended solely for the addressee(=
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To: Tom Taylor <taylor@nortelnetworks.com>
CC: Albrecht.Schwarz@alcatel.de, Zhao Bo <zbo@huawei.com>, megaco@ietf.org
Subject: Re: Signaling of UDI rsp Clearmode Bearer Service; Re: TDM Hairpinning;
 Re: [Megaco] Hairpin case A/u Law conversion
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Hello Tom and Albrecht,

What peice of information do you want to signal explicitely? Doesn't TMR =
allow=20
you to specify 64Kbit UDI? If so then its supported by H.248.1 Annex C.9.=
 For=20
H.248 text users this (or any element in Annex C) can be tranferred via=20
H.248.15. Alternatively Q.1950 sect 5.7.1.2 specifies an equivalent encod=
ing.

Regards, Christian

Tom Taylor wrote:

> I intended a reference to draft-ietf-avt-rtp-clearmode-04.txt in my=20
> intervention.  My old draft has been allowed to expire because it did=20
> not seem to be of much interest to the community.
>=20
> You are right: the draft just referred to doesn't apply to TDM, only to=
=20
> the packet side.  I wasn't thinking.  I agree that in the absence of th=
e=20
> attributes provided in my old draft, TDM bearer characteristics are=20
> assumed rather than signalled explicitly.
>=20
> Albrecht.Schwarz@alcatel.de wrote:
>=20
>> I think that the question is, whether this specific TDM bearer capabil=
ity
>> should be (1) explicitly signalled, or whether (2) implicit assumption=
 is
>> already sufficient.
>>
>> With regard to (1), Tom, I guess that your refer to
>>
>> * RTP/CLEARMODE
>>   RTP payload format for a 64 kbit/s transparent call
>>   http://www.ietf.org/internet-drafts/draft-ietf-avt-rtp-clearmode-04.=
txt
>>
>> But, this coming RFC may not be directly applied, e.g., packetization=20
>> time
>> parameter isn't applicable IMHO. Pls correct me if wrong.
>>
>> Or do you refer to your proposals in your expired draft wrt
>> * TDM/CLEARMODE
>>   Conventions for the use of the Session Description Protocol (SDP)
>>   for Digital Circuit Connections
>>   http://www.watersprings.org/pub/id/draft-taylor-mmusic-sdp-tdm-01.tx=
t
>>
>> My conclusion is, that an explicit signalling method doesn't exist tod=
ay
>> ("exception might be Q.1950").
>> Even though, an explicit TDM Media Descriptor for I.231.1  might be=20
>> helpful
>> for unambigously specification in certain MG implementations.
>>
>>
>> With regard to (2):
>> Implicit signaling is in my understanding the situation of today. In c=
ase
>> of, (a) missing TDM Media Descriptors, or (b) "identical TDM Media
>> Descriptors with transparent channel indications", when a transparent
>> 64-kbit/s bearer connection may be established.
>> Sometimes this is also called "native TDM switching", or "native TDM
>> hairpinning", but technically it is exactly representing an ISDN B=20
>> channel
>> with I.231.1 bearer service. [=3D> the channel may bypass the DSP, but=
 in
>> case that a DSP is looped-in, then must be the DSP channel operation m=
ode
>> configured for 'Clearmode']
>>
>> Last comment:
>> Such kind of implicit signalling mechanism is often assumed in telco
>> industry, because this is the legacy signaling mechanism within a TDM
>> switch ("if there aren't any signaled bearer capabilities then=20
>> transparent
>> channel; any needed bearer capability in addition must be explicitly
>> signalled, like signal processing network equipment functions, e.g.,=20
>> EC").
>>
>> TDM hairpinning means, an "H.248-controlled TDM switching function" fr=
om
>> H.248 Media Gateway perspective. Hence, this implicit signalling=20
>> assumption
>> may be still valid, or do you see any needs for explicit signaling
>> codepoints in case of TDM-to-TDM ISDN I.231.1 calls?
>>
>> Regards
>>
>> Albrecht
>>
>>
>>
>>
>>
>>
>>                                                                       =
                                                                         =
    =20
>>                       Tom=20
>> Taylor                                                                =
                                                   =20
>>                       <taylor@nortelne         To:      Zhao Bo=20
>> <zbo@huawei.com>                                                      =
             =20
>>                       tworks.com>              cc:      Albrecht=20
>> SCHWARZ/DE/ALCATEL@ALCATEL,=20
>> megaco@ietf.org                                       =20
>>                                                Subject: Re: TDM=20
>> Hairpinning; Re: [Megaco] Hairpin case A/u Law=20
>> conversion                                                 26.02.2004=20
>> 14:05                                                                 =
                                            =20
>>                                                                       =
                                                                         =
    =20
>>                                                                       =
                                                                         =
    =20
>>
>>
>>
>>
>> I think you would do it by specifying the CLEARMODE codec in the Local=
=20
>> and
>> Remote
>> descriptors.  Unfortunately, CLEARMODE is still under consideration by=
=20
>> the
>> IESG
>> and hasn't reached RFC status.
>>
>> Zhao Bo wrote:
>>
>>> Dear Albrecht:
>>>    Is there any H.248 package defined to signal the UDI transparency
>>
>>
>> properties in TDM hairping case?
>>
>>>    Best regards
>>>
>>> ----- Original Message -----
>>> From: <Albrecht.Schwarz@alcatel.de>
>>> To: "Zhao Bo" <zbo@huawei.com>
>>> Cc: <megaco@ietf.org>; <megaco-admin@ietf.org>
>>> Sent: Wednesday, February 25, 2004 10:24 PM
>>> Subject: TDM Hairpinning; Re: [Megaco] Hairpin case A/u Law conversio=
n
>>>
>>>
>>>
>>> Dear Zhao Bo,
>>>
>>> because there isn't any "hairpinning" definition in MEGACOP/H.248
>>
>>
>> standards
>>
>>> ("please correct if I'm wrong"), I'd like to use the following one fo=
r
>>> responding your questions:
>>>
>>>
>>
>> **********************************************************************=
*************=20
>>
>>
>>
>>> Definition:
>>> TDM Hairpinning
>>> ? is a scenario whereby a call is being made between two TDM=20
>>> endpoints on
>>
>>
>> a
>>
>>>    single media gateway. The media comes in on one TDM channel and go=
es
>>>    out on another TDM channel through the use of an internal loop in =
the
>>>    media gateway.
>>>
>>> Note 1: due to the fact that there are local call types at local
>>
>>
>> exchanges
>>
>>> (CLASS5), and transit exchanges (CLASS4) in legacy TDM networks (PSTN=
,
>>> NISDN, etc), there is a variety of TDM-to-TDM connection types behind=
=20
>>> the
>>> general "TDM hairpinning" capability (dependent on required type of I=
WF,
>>> etc.) in corresponding H.248 MG types
>>>
>>> Note 2: H.248/MEGCOP perspective
>>> TDM Hairpinning =3D Single H.248 Context with 2 H.248 TDM Termination=
s
>>>
>>
>> **********************************************************************=
**************=20
>>
>>
>>
>>> Based on this hairpinning understanding, my answers are:
>>>
>>> (1) Speech telephony service: G.711 companding formats are a property=
 of
>>> the corresponding H.248 TDM termination
>>>
>>> [Note: dependent on MG architecture and implementation, property=20
>>> might be
>>> signalled or preprovisioned. Of course, G.711 companding law is an
>>
>>
>> inherent
>>
>>> property of your DS0 channel at your PDH/SDH/SONET framer; the way, h=
ow
>>> this DS0 property is associated with the corresponding H.248 TDM
>>> Termination property may only realized MG-internally for very=20
>>> specific MG
>>> architectures. Generally it is up to the MGC, particularly if some (o=
r
>>
>>
>> all)
>>
>>> DS0's are ISDN B channels.]
>>>
>>> (2) Voiceband Data services: same as in (1)
>>>
>>> [Note: VBD according new ITU-T V.152 -> "... For purposes of
>>> interoperability, a V.152 compliant implementation shall support at=20
>>> least
>>> both G.711 A-law and G.711 =C3=AC-law codecs as VBD codecs. "]
>>>
>>> (3) ISDN UDI =3D all ISDN Teleservices with ISDN I.231. bearer servic=
e
>>> requirement
>>> =3D> H.248 TDM Termination property must be signalled by MGC, if not,=
 MG
>>
>>
>> may
>>
>>> not guarantee UDI capability (i.e., fully transparent 64-kbit/s beare=
r
>>> channel) in TDM hairpinning scenarios ...
>>>
>>>
>>> Conclusion:
>>> IF your MG is supporting
>>> PSTN lines (=3D H.248 ALN Termination),
>>> PSTN trunks (=3D H.248 TDM Termination), and
>>> ISDN B channels (=3D H.248 TDM Termination)
>>>
>>> AND IF you've such services and interworking requirements
>>>
>>> THEN you should generally signal the corresponding properties ...
>>>
>>> ... in case of
>>> TDM hairpinning,
>>> ALN hairpinning, or
>>> ALN-to-TDM connection types.
>>>
>>> Regards,
>>> Albrecht
>>>
>>> ALCATEL
>>>
>>>
>>>
>>>
>>>
>>
>>
>>>                      Zhao Bo
>>
>>
>>
>>>                      <zbo@huawei.com>         To:      megaco@ietf.or=
g
>>
>>
>>
>>>                      Sent by:                 cc:
>>
>>
>>
>>>                      megaco-admin@iet         Subject: [Megaco] Hairp=
in
>>
>>
>> case A/u Law conversion
>>
>>>                      f.org
>>
>>
>>
>>
>>
>>>                      25.02.2004 08:11
>>
>>
>>
>>
>>
>>>
>>>
>>>
>>> In this case, the A/u law format of a TDM ciruit can be provisioned, =
=20
>>> but
>>> the MG doesn't know the service type of a call, thus
>>> has no way to know if a conversion is needed. For speech service
>>
>>
>> conversion
>>
>>> may be needed; for data service like isdn UDI, conversion is not
>>
>>
>> permitted.
>>
>>> Is there any method to solve this problem?
>>>
>>> Zhao Bo
>>>
>>> *****************************************************************
>>> This e-mail and its attachments contain confidential information from
>>> HUAWEI, which is intended only for the person or entity whose address=
 is
>>> listed above. Any use of the information contained herein in any way
>>> (including, but not limited to, total or partial disclosure,
>>
>>
>> reproduction,
>>
>>> or dissemination) by persons other than the intended recipient(s) is
>>> prohibited. If you receive this e-mail in error, please notify the=20
>>> sender
>>> by phone or email immediately and delete it!
>>> *****************************************************************
>>>
>>> _______________________________________________
>>> Megaco mailing list
>>> Megaco@ietf.org
>>> https://www1.ietf.org/mailman/listinfo/megaco
>>>
>>>
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> Megaco mailing list
>>> Megaco@ietf.org
>>> https://www1.ietf.org/mailman/listinfo/megaco
>>> 1=C3=A8=1Ar=E2=80=B0=C5=A1=C5=A0X=C2=A7=E2=80=9AX=C2=AC=C2=B4=C3=87 i=
=C3=8A"z=C3=97=C3=A8=C2=AE=08m=C2=B6=E2=80=BA?=C3=BF=0C0=C3=96'=C2=AD~=C5=
=A0=C3=A0=C3=BEf=C2=A2=E2=80=93f=C2=A7=C3=BEX=C2=AC=C2=B6)=C3=9F=C2=A3=C3=
=B9=C5=BE=EF=A2=9D=C2=A7(
>>
>>
>>
>>
>>
>=20
> _______________________________________________
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To: Zhao Bo <zbo@huawei.com>
CC: megaco@ietf.org
Subject: Re: [Megaco] Questions about H.248.17 "line test packages"(upgrade,sorry,
 my poor English)
References: <000b01c3f9ee$ea987ae0$f8486e0a@HUAWEI.COM> <403A8743.6000402@ericsson.com> <000401c3fd2f$7b2023e0$f8486e0a@HUAWEI.COM>
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Hello Zhao Bo,

I don't know why you think it is quite strange? MGC/MGs are full of O&M systems 
which supervise the performance of their internals. If there's a problem or a 
performance metric this is output to somebody, which may be another off-line system.

Christian

Zhao Bo wrote:

> Hi Chrisitan:
>     I studied a simple procedure as follow:
> 
>     (1)Testee MG is set to  loopback;
>     (2)Tester sends a 1020Hz tone to  testee;
>     (3)Tester receive the loopbacked tone, analyze the quality of tone and output a report.
> 
>     Suppose the Tester is embeded in MGW. In H.248.17 structure,  the procedure will be.
>     (1)Testee MGC set the Testee MGW to loopback.
>     (2)Tester MGC signals the Tester to send  1020Hz tone;
>     (3)Someone ask Tester MGW to receive loopback tone and make analysis.
>     (4)MGW output a report to this "someone".
> 
>     Maybe you think O&M should be that "Someone"?  If my understanding is right--in same procedure O&M and  MGC will operate same termination, I think that's quite strange:-)
>     
>     Best regards
>     
> 
> ----- Original Message ----- 
> From: "Christian Groves" <Christian.Groves@ericsson.com>
> To: "Zhao Bo" <zbo@huawei.com>
> Cc: <megaco@ietf.org>
> Sent: Tuesday, February 24, 2004 7:05 AM
> Subject: Re: [Megaco] Questions about H.248.17 "line test packages"(upgrade,sorry, my poor English)
> 
> 
> 
>>Hello Zhao,
>>
>>I'm the editor of H.248.17. Please see my replies below marked [CHG].
>>
>>Regards, Christian
>>
>>Zhao Bo wrote:
>>
>>
>>>Could anyone kindly answer the following questions (I can't find the author's email address in H.248.17 text).
>>>
>>>1. Section 1 "Scope" says:
>>>"The detailing of results that are reported (e.g. events and statistics), as well as the timing and mechanisms used for
>>>transmitting such records from the MG to the MGC"
>>>Why? If a test is initiated by MGC, why not define a protocol to send the measuring result back to MGC?
>>
>>[CHG] As the results are related to the physical characteristics of the bearer 
>>and not usually interesting to a MGC it was seen that a protocol other than 
>>H.248 (or even internal O&M of the MG) was more suitable for this information.
>>
>>
>>>2.If we have two switch connected with temination T1 and T2
>>>    SW1--T1-------T2--SW2
>>>Shall the H.248 signal be apllied to T1 and T2, or some extra termination, for example T3 or T4 in the following scenerio:
>>>T3--SW1--T1-------T2--SW2--T4
>>
>>[CHG] Depends on what you want to test. If all you want to test is the link 
>>between T1 and T2 then you only apply signals between T1 & T2.
>>
>>
>>>3. Section 7.1.1 says:
>>>"ITU-T Rec. O.11 describes test responder behaviour. For a description of this behaviour see
>>>clause 9."
>>>But neither O.11 nor H.247.17 text has a clause 9?
>>
>>[CHG] Please see the latest implementors guide for the correction.
>>
>>
>>>Best regards
>>>
>>>Zhao Bo
>>>
>>>
>>>Zhao Bo
>>>
>>>*****************************************************************
>>>This e-mail and its attachments contain confidential information from HUAWEI, which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction, or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender by phone or email immediately and delete it!
>>>*****************************************************************
>>>
>>>_______________________________________________
>>>Megaco mailing list
>>>Megaco@ietf.org
>>>https://www1.ietf.org/mailman/listinfo/megaco
>>>
>>
>>
>>This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you.
>>
>>E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof.
>>
>>
>>_______________________________________________
>>Megaco mailing list
>>Megaco@ietf.org
>>https://www1.ietf.org/mailman/listinfo/megaco
> 
> 


This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you.

E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof.


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 my poor English)
References: <000b01c3f9ee$ea987ae0$f8486e0a@HUAWEI.COM> <403A8743.6000402@ericsson.com> <000401c3fd2f$7b2023e0$f8486e0a@HUAWEI.COM>
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Hello Zhao Bo,

I don't know why you think it is quite strange? MGC/MGs are full of O&M systems 
which supervise the performance of their internals. If there's a problem or a 
performance metric this is output to somebody, which may be another off-line system.

Christian

Zhao Bo wrote:

> Hi Chrisitan:
>     I studied a simple procedure as follow:
> 
>     (1)Testee MG is set to  loopback;
>     (2)Tester sends a 1020Hz tone to  testee;
>     (3)Tester receive the loopbacked tone, analyze the quality of tone and output a report.
> 
>     Suppose the Tester is embeded in MGW. In H.248.17 structure,  the procedure will be.
>     (1)Testee MGC set the Testee MGW to loopback.
>     (2)Tester MGC signals the Tester to send  1020Hz tone;
>     (3)Someone ask Tester MGW to receive loopback tone and make analysis.
>     (4)MGW output a report to this "someone".
> 
>     Maybe you think O&M should be that "Someone"?  If my understanding is right--in same procedure O&M and  MGC will operate same termination, I think that's quite strange:-)
>     
>     Best regards
>     
> 
> ----- Original Message ----- 
> From: "Christian Groves" <Christian.Groves@ericsson.com>
> To: "Zhao Bo" <zbo@huawei.com>
> Cc: <megaco@ietf.org>
> Sent: Tuesday, February 24, 2004 7:05 AM
> Subject: Re: [Megaco] Questions about H.248.17 "line test packages"(upgrade,sorry, my poor English)
> 
> 
> 
>>Hello Zhao,
>>
>>I'm the editor of H.248.17. Please see my replies below marked [CHG].
>>
>>Regards, Christian
>>
>>Zhao Bo wrote:
>>
>>
>>>Could anyone kindly answer the following questions (I can't find the author's email address in H.248.17 text).
>>>
>>>1. Section 1 "Scope" says:
>>>"The detailing of results that are reported (e.g. events and statistics), as well as the timing and mechanisms used for
>>>transmitting such records from the MG to the MGC"
>>>Why? If a test is initiated by MGC, why not define a protocol to send the measuring result back to MGC?
>>
>>[CHG] As the results are related to the physical characteristics of the bearer 
>>and not usually interesting to a MGC it was seen that a protocol other than 
>>H.248 (or even internal O&M of the MG) was more suitable for this information.
>>
>>
>>>2.If we have two switch connected with temination T1 and T2
>>>    SW1--T1-------T2--SW2
>>>Shall the H.248 signal be apllied to T1 and T2, or some extra termination, for example T3 or T4 in the following scenerio:
>>>T3--SW1--T1-------T2--SW2--T4
>>
>>[CHG] Depends on what you want to test. If all you want to test is the link 
>>between T1 and T2 then you only apply signals between T1 & T2.
>>
>>
>>>3. Section 7.1.1 says:
>>>"ITU-T Rec. O.11 describes test responder behaviour. For a description of this behaviour see
>>>clause 9."
>>>But neither O.11 nor H.247.17 text has a clause 9?
>>
>>[CHG] Please see the latest implementors guide for the correction.
>>
>>
>>>Best regards
>>>
>>>Zhao Bo
>>>
>>>
>>>Zhao Bo
>>>
>>>*****************************************************************
>>>This e-mail and its attachments contain confidential information from HUAWEI, which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction, or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender by phone or email immediately and delete it!
>>>*****************************************************************
>>>
>>>_______________________________________________
>>>Megaco mailing list
>>>Megaco@ietf.org
>>>https://www1.ietf.org/mailman/listinfo/megaco
>>>
>>
>>
>>This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you.
>>
>>E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof.
>>
>>
>>_______________________________________________
>>Megaco mailing list
>>Megaco@ietf.org
>>https://www1.ietf.org/mailman/listinfo/megaco
> 
> 


This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you.

E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof.


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Date: Mon, 01 Mar 2004 09:57:26 +0800
From: Zhao Bo <zbo@huawei.com>
Subject: Re: [Megaco] Questions about H.248.17
 "line test packages"(upgrade,sorry, my poor English)
To: Christian Groves <Christian.Groves@ericsson.com>
Cc: megaco@ietf.org
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Hi Christian:
    I think as a common rule, if a termination is in a call (being operated by MGC), O&M should not operate it, because the O&M operation may affect the call quality. 
    Best regards.

----- Original Message ----- 
From: "Christian Groves" <Christian.Groves@ericsson.com>
To: "Zhao Bo" <zbo@huawei.com>
Cc: <megaco@ietf.org>
Sent: Monday, March 01, 2004 8:28 AM
Subject: Re: [Megaco] Questions about H.248.17 "line test packages"(upgrade,sorry, my poor English)


> Hello Zhao Bo,
> 
> I don't know why you think it is quite strange? MGC/MGs are full of O&M systems 
> which supervise the performance of their internals. If there's a problem or a 
> performance metric this is output to somebody, which may be another off-line system.
> 
> Christian
> 
> Zhao Bo wrote:
> 
> > Hi Chrisitan:
> >     I studied a simple procedure as follow:
> > 
> >     (1)Testee MG is set to  loopback;
> >     (2)Tester sends a 1020Hz tone to  testee;
> >     (3)Tester receive the loopbacked tone, analyze the quality of tone and output a report.
> > 
> >     Suppose the Tester is embeded in MGW. In H.248.17 structure,  the procedure will be.
> >     (1)Testee MGC set the Testee MGW to loopback.
> >     (2)Tester MGC signals the Tester to send  1020Hz tone;
> >     (3)Someone ask Tester MGW to receive loopback tone and make analysis.
> >     (4)MGW output a report to this "someone".
> > 
> >     Maybe you think O&M should be that "Someone"?  If my understanding is right--in same procedure O&M and  MGC will operate same termination, I think that's quite strange:-)
> >     
> >     Best regards
> >     
> > 
> > ----- Original Message ----- 
> > From: "Christian Groves" <Christian.Groves@ericsson.com>
> > To: "Zhao Bo" <zbo@huawei.com>
> > Cc: <megaco@ietf.org>
> > Sent: Tuesday, February 24, 2004 7:05 AM
> > Subject: Re: [Megaco] Questions about H.248.17 "line test packages"(upgrade,sorry, my poor English)
> > 
> > 
> > 
> >>Hello Zhao,
> >>
> >>I'm the editor of H.248.17. Please see my replies below marked [CHG].
> >>
> >>Regards, Christian
> >>
> >>Zhao Bo wrote:
> >>
> >>
> >>>Could anyone kindly answer the following questions (I can't find the author's email address in H.248.17 text).
> >>>
> >>>1. Section 1 "Scope" says:
> >>>"The detailing of results that are reported (e.g. events and statistics), as well as the timing and mechanisms used for
> >>>transmitting such records from the MG to the MGC"
> >>>Why? If a test is initiated by MGC, why not define a protocol to send the measuring result back to MGC?
> >>
> >>[CHG] As the results are related to the physical characteristics of the bearer 
> >>and not usually interesting to a MGC it was seen that a protocol other than 
> >>H.248 (or even internal O&M of the MG) was more suitable for this information.
> >>
> >>
> >>>2.If we have two switch connected with temination T1 and T2
> >>>    SW1--T1-------T2--SW2
> >>>Shall the H.248 signal be apllied to T1 and T2, or some extra termination, for example T3 or T4 in the following scenerio:
> >>>T3--SW1--T1-------T2--SW2--T4
> >>
> >>[CHG] Depends on what you want to test. If all you want to test is the link 
> >>between T1 and T2 then you only apply signals between T1 & T2.
> >>
> >>
> >>>3. Section 7.1.1 says:
> >>>"ITU-T Rec. O.11 describes test responder behaviour. For a description of this behaviour see
> >>>clause 9."
> >>>But neither O.11 nor H.247.17 text has a clause 9?
> >>
> >>[CHG] Please see the latest implementors guide for the correction.
> >>
> >>
> >>>Best regards
> >>>
> >>>Zhao Bo
> >>>
> >>>
> >>>Zhao Bo
> >>>
> >>>*****************************************************************
> >>>This e-mail and its attachments contain confidential information from HUAWEI, which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction, or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender by phone or email immediately and delete it!
> >>>*****************************************************************
> >>>
> >>>_______________________________________________
> >>>Megaco mailing list
> >>>Megaco@ietf.org
> >>>https://www1.ietf.org/mailman/listinfo/megaco
> >>>
> >>
> >>
> >>This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you.
> >>
> >>E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof.
> >>
> >>
> >>_______________________________________________
> >>Megaco mailing list
> >>Megaco@ietf.org
> >>https://www1.ietf.org/mailman/listinfo/megaco
> > 
> > 
> 
> 
> This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you.
> 
> E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof.
> 

_______________________________________________
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Date: Mon, 01 Mar 2004 09:57:26 +0800
From: Zhao Bo <zbo@huawei.com>
Subject: Re: [Megaco] Questions about H.248.17
 "line test packages"(upgrade,sorry, my poor English)
To: Christian Groves <Christian.Groves@ericsson.com>
Cc: megaco@ietf.org
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Hi Christian:
    I think as a common rule, if a termination is in a call (being operated by MGC), O&M should not operate it, because the O&M operation may affect the call quality. 
    Best regards.

----- Original Message ----- 
From: "Christian Groves" <Christian.Groves@ericsson.com>
To: "Zhao Bo" <zbo@huawei.com>
Cc: <megaco@ietf.org>
Sent: Monday, March 01, 2004 8:28 AM
Subject: Re: [Megaco] Questions about H.248.17 "line test packages"(upgrade,sorry, my poor English)


> Hello Zhao Bo,
> 
> I don't know why you think it is quite strange? MGC/MGs are full of O&M systems 
> which supervise the performance of their internals. If there's a problem or a 
> performance metric this is output to somebody, which may be another off-line system.
> 
> Christian
> 
> Zhao Bo wrote:
> 
> > Hi Chrisitan:
> >     I studied a simple procedure as follow:
> > 
> >     (1)Testee MG is set to  loopback;
> >     (2)Tester sends a 1020Hz tone to  testee;
> >     (3)Tester receive the loopbacked tone, analyze the quality of tone and output a report.
> > 
> >     Suppose the Tester is embeded in MGW. In H.248.17 structure,  the procedure will be.
> >     (1)Testee MGC set the Testee MGW to loopback.
> >     (2)Tester MGC signals the Tester to send  1020Hz tone;
> >     (3)Someone ask Tester MGW to receive loopback tone and make analysis.
> >     (4)MGW output a report to this "someone".
> > 
> >     Maybe you think O&M should be that "Someone"?  If my understanding is right--in same procedure O&M and  MGC will operate same termination, I think that's quite strange:-)
> >     
> >     Best regards
> >     
> > 
> > ----- Original Message ----- 
> > From: "Christian Groves" <Christian.Groves@ericsson.com>
> > To: "Zhao Bo" <zbo@huawei.com>
> > Cc: <megaco@ietf.org>
> > Sent: Tuesday, February 24, 2004 7:05 AM
> > Subject: Re: [Megaco] Questions about H.248.17 "line test packages"(upgrade,sorry, my poor English)
> > 
> > 
> > 
> >>Hello Zhao,
> >>
> >>I'm the editor of H.248.17. Please see my replies below marked [CHG].
> >>
> >>Regards, Christian
> >>
> >>Zhao Bo wrote:
> >>
> >>
> >>>Could anyone kindly answer the following questions (I can't find the author's email address in H.248.17 text).
> >>>
> >>>1. Section 1 "Scope" says:
> >>>"The detailing of results that are reported (e.g. events and statistics), as well as the timing and mechanisms used for
> >>>transmitting such records from the MG to the MGC"
> >>>Why? If a test is initiated by MGC, why not define a protocol to send the measuring result back to MGC?
> >>
> >>[CHG] As the results are related to the physical characteristics of the bearer 
> >>and not usually interesting to a MGC it was seen that a protocol other than 
> >>H.248 (or even internal O&M of the MG) was more suitable for this information.
> >>
> >>
> >>>2.If we have two switch connected with temination T1 and T2
> >>>    SW1--T1-------T2--SW2
> >>>Shall the H.248 signal be apllied to T1 and T2, or some extra termination, for example T3 or T4 in the following scenerio:
> >>>T3--SW1--T1-------T2--SW2--T4
> >>
> >>[CHG] Depends on what you want to test. If all you want to test is the link 
> >>between T1 and T2 then you only apply signals between T1 & T2.
> >>
> >>
> >>>3. Section 7.1.1 says:
> >>>"ITU-T Rec. O.11 describes test responder behaviour. For a description of this behaviour see
> >>>clause 9."
> >>>But neither O.11 nor H.247.17 text has a clause 9?
> >>
> >>[CHG] Please see the latest implementors guide for the correction.
> >>
> >>
> >>>Best regards
> >>>
> >>>Zhao Bo
> >>>
> >>>
> >>>Zhao Bo
> >>>
> >>>*****************************************************************
> >>>This e-mail and its attachments contain confidential information from HUAWEI, which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction, or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender by phone or email immediately and delete it!
> >>>*****************************************************************
> >>>
> >>>_______________________________________________
> >>>Megaco mailing list
> >>>Megaco@ietf.org
> >>>https://www1.ietf.org/mailman/listinfo/megaco
> >>>
> >>
> >>
> >>This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you.
> >>
> >>E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof.
> >>
> >>
> >>_______________________________________________
> >>Megaco mailing list
> >>Megaco@ietf.org
> >>https://www1.ietf.org/mailman/listinfo/megaco
> > 
> > 
> 
> 
> This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you.
> 
> E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof.
> 

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