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From: "Oscar Novo" <oscar.novo@ericsson.com>
To: "Duddy, Sean (Sean)" <duddy@avaya.com>,
	<xcon@ietf.org>
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Sean,
=20
The controls defined in the data model are really basic ones as we =
agreed in the WG. The controls you suggested in your e-mail can be added =
to the document in future extensions. Note that the data model is not =
specific to one protocol (e.g. PSTN, SIP), that's why many times the =
data model uses general naming in order to fullfil the requirements of =
all the protocols.=20
=20
Regarding your comment number 4, the <participant-passcode> and =
<administrator-passcode> elements were defined in previous versions of =
the document. However, the WG decided (check the minutes from IETF 68) =
to leave out the common policy from the data model. The element =
<conference-password> is used to specify the PIN code of the conference. =
So, your comment number 5 is fullfil with this element. Concerning your =
comment number 6, the data model does define a outbound dial list, check =
the <allowed-users-list> element and its 'method 'attribute.=20
=20
Answering your general questions briefly:
=20
Number 1: The definition of on-demand conference in the data model it =
depends pretty much from the implementor. One option it would be not to =
defined the DTSTART and the DTEND in the <base> element.=20
Number 2: The pool/lines pool is quiet specific to PSTN. The data model =
defines the <maximum-user-count> element that it could be used for the =
same purpose. Extension to this element can be done later.=20
Number 3: The information for recurring conference can be defined in the =
<base> element. I suggested you to check RFC 2445. For instance, the =
example defined in the data model is a recurring conference. Check the =
example below:

 PRODID:-//LlamaSpinner Inc.//NONSGML CamelCall//EN
 VERSION:2.0
 BEGIN:VEVENT
 DTSTAMP:20071003T140728Z
 UID:20071003T140728Z-345FDA-carol@example.com
 ORGANIZER:MAILTO:carol@example.com
 DTSTART:20071017T143000Z
 RRULE:FREQ=3DWEEKLY
 DTEND:20071217T163000Z
 END:VEVENT
 END:VCALENDAR
=20
Cheers,
=20
Oscar

________________________________

From: xcon-bounces@ietf.org [mailto:xcon-bounces@ietf.org] On Behalf Of =
Duddy, Sean (Sean)
Sent: 30. kes=E4kuuta 2008 13:17
To: xcon@ietf.org
Subject: [XCON] draft-ietf-xcon-common-data-model


Hi,
    Some comments on the content of this data model re: audio =
conferencing=20
(I know these could be accomodated using extensions but maybe they =
should be part of the standard model as they do seem central to any =
conferencing solution)
=20
1. Conference recording is missing. Need attribute(s) to indicate if =
recording is allowed and how it is triggered (automatic or manual)
2. Conference playback is missing. Need attribute to indicate if =
playback is allowed.
3. Music source selection is missing. Need to be able to set the music =
source to be played to particpants
waiting to get into the conference.
4. Moderator and conferee passcode. I think the model calls this the =
<conference-password>, but there needs=20
to be two, one for moderator and one for conferee. Also as these are =
DTMF digits, I think the term 'passcode'
is more appropriate than 'password'.
5. Apart from the access control lists, the model seems to be lacking in =
security, specifically there needs to be a=20
method to specify PIN codes associated with a conference i.e. user needs =
to enter this PIN to gain entry to conference
6. Outbound dial list is missing. Need to be able to configure URIs that =
the moderator/operator can dial out to when conference opens.
Also need to configure how the people on the list get dialled e.g. =
manually by operator or automatic when moderator joins.
Need to configure what message gets played to them initially also.
7. Entry/Exit tone configuration is missing. Need to be able to specify =
what should get played when particpants enter/leave=20
e.g. tone,message,tone&message,none=20
=20
General questions:
1. How would on-demand conferences be modelled? (Demand conferences are =
conferences that people can dial into any time i.e. there would be no =
scheduling information).
2. There is no mention of port/line pools. e.g. scheduled conferences =
would typically use ports from a reserved pool so one is guaranteed to =
get into the conference
at conference start time. I think there should be an attribute to =
specify what pool to use - reserved,unreserved,other.
3. For recurring conferences, where does the original recurrence info =
get stored? i.e. there is a <conference-time> entry for each recurrence =
which I assume
will have the start/end timing info for that particular recurrence, but =
where does the original pattern get stored and how does the model =
maintain the releationship
between the conferences that make up the pattern? This relationship =
would be handy to apply a modification to all conferences that make up a =
recurrence pattern.
=20
Sean

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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 6.00.2800.1611" name=3DGENERATOR></HEAD>
<BODY>
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =

size=3D2>Sean,</FONT></SPAN></DIV>
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =

size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =
size=3D2>The=20
controls defined in the data model are really basic ones as we agreed in =
the WG.=20
The controls you suggested in your e-mail can be added to the document =
in future=20
extensions. Note that the data model is not specific to one protocol =
(e.g. PSTN,=20
SIP), that's why many times the data model uses general naming in order =
to=20
fullfil the requirements of all the protocols. </FONT></SPAN></DIV>
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =

size=3D2></FONT></SPAN><SPAN class=3D245204309-02072008><FONT =
face=3DArial=20
color=3D#0000ff size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =

size=3D2>Regarding your comment number 4, the =
&lt;participant-passcode&gt; and=20
&lt;administrator-passcode&gt; elements were defined in previous =
versions of the=20
document. However, the WG decided (check the minutes from IETF 68) to =
leave out=20
the common policy from the data model.&nbsp;</FONT></SPAN><SPAN=20
class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =
size=3D2>The element=20
&lt;conference-password&gt; is used to specify the PIN code of the =
conference.=20
So, your comment number 5 is fullfil with this element. Concerning your =
comment=20
number 6, the data model does define a outbound dial list, check the=20
&lt;allowed-users-list&gt; element and its 'method=20
'attribute.&nbsp;</FONT></SPAN></DIV>
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =

size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =

size=3D2>Answering your general questions briefly:</FONT></SPAN></DIV>
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =

size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =
size=3D2>Number=20
1: The definition of on-demand conference in the data model it depends =
pretty=20
much from the implementor. One option it would be not to defined the =
DTSTART and=20
the DTEND in the &lt;base&gt; element. </FONT></SPAN></DIV>
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =
size=3D2>Number=20
2: The pool/lines pool is quiet specific to PSTN. The data model defines =
the=20
&lt;maximum-user-count&gt; element that it could be used for the same =
purpose.=20
Extension to this element can be done later. </FONT></SPAN></DIV>
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =
size=3D2>Number=20
3: The information for recurring conference can be defined in the =
&lt;base&gt;=20
element. I suggested you to check RFC 2445. For instance, the example =
defined in=20
the data model is a recurring conference. Check the example=20
below:</FONT></SPAN></DIV>
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =

size=3D2></FONT></SPAN><SPAN class=3D245204309-02072008><FONT =
face=3DArial=20
size=3D2></FONT><BR>&nbsp;PRODID:-//LlamaSpinner Inc.//NONSGML=20
CamelCall//EN<BR>&nbsp;VERSION:2.0<BR>&nbsp;BEGIN:VEVENT<BR>&nbsp;DTSTAMP=
:20071003T140728Z<BR>&nbsp;UID:20071003T140728Z-345FDA-carol@example.com<=
BR>&nbsp;ORGANIZER:MAILTO:carol@example.com<BR>&nbsp;DTSTART:20071017T143=
000Z<BR>&nbsp;RRULE:FREQ=3DWEEKLY<BR>&nbsp;DTEND:20071217T163000Z</SPAN><=
/DIV>
<DIV><SPAN=20
class=3D245204309-02072008>&nbsp;END:VEVENT<BR>&nbsp;END:VCALENDAR</DIV><=
/SPAN>
<DIV><SPAN class=3D245204309-02072008></SPAN><FONT face=3DArial><FONT=20
size=3D2></FONT></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial><FONT size=3D2>C<SPAN=20
class=3D245204309-02072008>heers,</SPAN></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><SPAN=20
class=3D245204309-02072008></SPAN></FONT></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial><FONT size=3D2><SPAN=20
class=3D245204309-02072008>Oscar</SPAN></FONT></FONT></DIV>
<DIV><BR></DIV>
<DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr align=3Dleft>
<HR tabIndex=3D-1>
<FONT face=3DTahoma size=3D2><B>From:</B> xcon-bounces@ietf.org=20
[mailto:xcon-bounces@ietf.org] <B>On Behalf Of </B>Duddy, Sean=20
(Sean)<BR><B>Sent:</B> 30. kes=E4kuuta 2008 13:17<BR><B>To:</B>=20
xcon@ietf.org<BR><B>Subject:</B> [XCON]=20
draft-ietf-xcon-common-data-model<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial=20
size=3D2>Hi,</FONT></SPAN></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><SPAN =
class=3D880305811-26062008><SPAN=20
class=3D419190710-30062008>&nbsp;&nbsp;&nbsp; Some comments on the =
content of this=20
data model re: audio conferencing </SPAN></SPAN></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><SPAN =
class=3D880305811-26062008><SPAN=20
class=3D419190710-30062008></SPAN></SPAN><SPAN =
class=3D880305811-26062008><SPAN=20
class=3D419190710-30062008>(I know these could be accomodated using=20
extensions</SPAN></SPAN></FONT></FONT><SPAN =
class=3D880305811-26062008><FONT=20
face=3DArial size=3D2><SPAN class=3D419190710-30062008>&nbsp;but maybe =
they should be=20
part of the standard model as they do seem central to any conferencing=20
solution)</SPAN></FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial=20
size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>1. =
Conference=20
recording is missing. Need attribute(s) to indicate if recording is =
allowed and=20
how it is triggered (automatic or manual)</FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>2. =
Conference=20
playback is missing. Need attribute to indicate if playback is=20
allowed.</FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>3. =
Music source=20
selection is missing. Need to be able to set the music source to be =
played to=20
particpants</FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial =
size=3D2>waiting to get into=20
the conference.</FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>4. =
Moderator and=20
conferee passcode. I think the model calls this the =
&lt;conference-password&gt;,=20
but there needs </FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>to be =
two, one for=20
moderator and one for conferee. Also as these are DTMF digits, I think =
the term=20
'passcode'</FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>is =
more appropriate=20
than 'password'.</FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>5. =
Apart from the=20
access control lists, the model seems to be lacking in security, =
specifically=20
there needs to be a </FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial =
size=3D2>method&nbsp;to=20
specify PIN codes associated with a conference i.e. user needs to enter =
this PIN=20
to gain entry to conference</FONT></SPAN></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><SPAN =
class=3D880305811-26062008>6. Outbound=20
dial list is missing. Need to be able to configure URIs that the=20
moderator/operator can dial out to when conference=20
opens.</SPAN></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><SPAN =
class=3D880305811-26062008>Also need to=20
configure how the people on the list get dialled e.g. manually by =
operator or=20
automatic when moderator joins.</SPAN></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><SPAN =
class=3D880305811-26062008>Need to=20
configure what message gets played to them initially=20
also.</SPAN></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><SPAN=20
class=3D880305811-26062008></SPAN></FONT></FONT><FONT face=3DArial><FONT =

size=3D2><SPAN class=3D880305811-26062008>7. Entry/Exit tone =
configuration is=20
missing. Need to be able to specify what should get&nbsp;played when =
particpants=20
enter/leave </SPAN></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><SPAN =
class=3D880305811-26062008>e.g.=20
tone,message,tone&amp;message,none&nbsp;</SPAN></FONT></FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial =
size=3D2>General=20
questions:</FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>1. How =
would=20
on-demand conferences be modelled? (Demand conferences are conferences =
that=20
people can dial into any time i.e. there would be no scheduling=20
information).</FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>2. =
There is no=20
mention of port/line pools. e.g. scheduled conferences would typically =
use ports=20
from a reserved pool so one is guaranteed to get into the=20
conference</FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>at =
conference start=20
time. I think there should be an attribute to specify what pool to use - =

reserved,unreserved,other.</FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>3. For =
recurring=20
conferences, where does the original recurrence info get stored? i.e. =
there is a=20
&lt;conference-time&gt; entry for each recurrence which I=20
assume</FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>will =
have the=20
start/end timing info for that particular recurrence, but where does the =

original pattern get stored and how does the model maintain the=20
releationship</FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial =
size=3D2>between the=20
conferences that make up the pattern? This relationship would be handy =
to apply=20
a modification to all conferences that make up a recurrence=20
pattern.</FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial=20
size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D880305811-26062008></SPAN><SPAN =
class=3D880305811-26062008><FONT=20
face=3DArial size=3D2>Sean</FONT></SPAN></DIV></DIV></BODY></HTML>

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From: "Duddy, Sean (Sean)" <duddy@avaya.com>
To: "Oscar Novo" <oscar.novo@ericsson.com>,
	<xcon@ietf.org>
Subject: Re: [XCON] draft-ietf-xcon-common-data-model
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Hi Oscar,
   Thanks for your reply. I am concerned that some key conferencing data =
items are missing from the model and instead addressed via extensions.=20
Specifically I am talking about:-
=20
1. <conference-password.>
    This is a one-one mapping with the conference URI. Based on the IETF =
68 minutes Re:policies, why is this field still there?
Basically every conference needs at least two passwords - one for =
particpants  & one or more for moderators.
If these fields are going to be provided via some policy schema, then I =
think that needs to be somehow described so there is a common =
definition...
2. Demand conferences
   On Demand conferences are an industry wide recognised type of =
conference and therefore should be part of the model.=20
3. The pool/lines pool is not specific to PSTN. It is applicable to VOIP =
also and not the same as <maximun-user-count>.
Basically they are used to divide up conferencing capacity. e.g. =
scheduled conferences would typically use one pool and=20
demand another in order to guarantee resources for the scheduled ones...
=20
On the recurring conference, the model doesnt seem to allow modfication =
of a particular instance in a recurrence pattern.
e.g. I have a weekly recurring conference, on a Friday. However next =
Friday, the meeting needs to be moved forward by an hour.
How can this be achieved via the model? It would be essential to be able =
to view/modify individual instances of a conference.
=20
Sean

________________________________

From: Oscar Novo [mailto:oscar.novo@ericsson.com]
Sent: Wed 02/07/2008 12:25
To: Duddy, Sean (Sean); xcon@ietf.org
Subject: RE: [XCON] draft-ietf-xcon-common-data-model


Sean,
=20
The controls defined in the data model are really basic ones as we =
agreed in the WG. The controls you suggested in your e-mail can be added =
to the document in future extensions. Note that the data model is not =
specific to one protocol (e.g. PSTN, SIP), that's why many times the =
data model uses general naming in order to fullfil the requirements of =
all the protocols.=20
=20
Regarding your comment number 4, the <participant-passcode> and =
<administrator-passcode> elements were defined in previous versions of =
the document. However, the WG decided (check the minutes from IETF 68) =
to leave out the common policy from the data model. The element =
<conference-password> is used to specify the PIN code of the conference. =
So, your comment number 5 is fullfil with this element. Concerning your =
comment number 6, the data model does define a outbound dial list, check =
the <allowed-users-list> element and its 'method 'attribute.=20
=20
Answering your general questions briefly:
=20
Number 1: The definition of on-demand conference in the data model it =
depends pretty much from the implementor. One option it would be not to =
defined the DTSTART and the DTEND in the <base> element.=20
Number 2: The pool/lines pool is quiet specific to PSTN. The data model =
defines the <maximum-user-count> element that it could be used for the =
same purpose. Extension to this element can be done later.=20
Number 3: The information for recurring conference can be defined in the =
<base> element. I suggested you to check RFC 2445. For instance, the =
example defined in the data model is a recurring conference. Check the =
example below:

 PRODID:-//LlamaSpinner Inc.//NONSGML CamelCall//EN
 VERSION:2.0
 BEGIN:VEVENT
 DTSTAMP:20071003T140728Z
 UID:20071003T140728Z-345FDA-carol@example.com
 ORGANIZER:MAILTO:carol@example.com
 DTSTART:20071017T143000Z
 RRULE:FREQ=3DWEEKLY
 DTEND:20071217T163000Z
 END:VEVENT
 END:VCALENDAR
=20
Cheers,
=20
Oscar

________________________________

From: xcon-bounces@ietf.org [mailto:xcon-bounces@ietf.org] On Behalf Of =
Duddy, Sean (Sean)
Sent: 30. kes=E4kuuta 2008 13:17
To: xcon@ietf.org
Subject: [XCON] draft-ietf-xcon-common-data-model


Hi,
    Some comments on the content of this data model re: audio =
conferencing=20
(I know these could be accomodated using extensions but maybe they =
should be part of the standard model as they do seem central to any =
conferencing solution)
=20
1. Conference recording is missing. Need attribute(s) to indicate if =
recording is allowed and how it is triggered (automatic or manual)
2. Conference playback is missing. Need attribute to indicate if =
playback is allowed.
3. Music source selection is missing. Need to be able to set the music =
source to be played to particpants
waiting to get into the conference.
4. Moderator and conferee passcode. I think the model calls this the =
<conference-password>, but there needs=20
to be two, one for moderator and one for conferee. Also as these are =
DTMF digits, I think the term 'passcode'
is more appropriate than 'password'.
5. Apart from the access control lists, the model seems to be lacking in =
security, specifically there needs to be a=20
method to specify PIN codes associated with a conference i.e. user needs =
to enter this PIN to gain entry to conference
6. Outbound dial list is missing. Need to be able to configure URIs that =
the moderator/operator can dial out to when conference opens.
Also need to configure how the people on the list get dialled e.g. =
manually by operator or automatic when moderator joins.
Need to configure what message gets played to them initially also.
7. Entry/Exit tone configuration is missing. Need to be able to specify =
what should get played when particpants enter/leave=20
e.g. tone,message,tone&message,none=20
=20
General questions:
1. How would on-demand conferences be modelled? (Demand conferences are =
conferences that people can dial into any time i.e. there would be no =
scheduling information).
2. There is no mention of port/line pools. e.g. scheduled conferences =
would typically use ports from a reserved pool so one is guaranteed to =
get into the conference
at conference start time. I think there should be an attribute to =
specify what pool to use - reserved,unreserved,other.
3. For recurring conferences, where does the original recurrence info =
get stored? i.e. there is a <conference-time> entry for each recurrence =
which I assume
will have the start/end timing info for that particular recurrence, but =
where does the original pattern get stored and how does the model =
maintain the releationship
between the conferences that make up the pattern? This relationship =
would be handy to apply a modification to all conferences that make up a =
recurrence pattern.
=20
Sean

------_=_NextPart_001_01C8DC55.073BF851
Content-Type: text/html;
	charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

<HTML dir=3Dltr><HEAD>=0A=
<META http-equiv=3DContent-Type content=3D"text/html; charset=3Dunicode">=0A=
<META content=3D"MSHTML 6.00.2900.3354" name=3DGENERATOR></HEAD>=0A=
<BODY>=0A=
<DIV id=3DidOWAReplyText88520 dir=3Dltr>=0A=
<DIV dir=3Dltr><FONT face=3DArial color=3D#000000 size=3D2>=0A=
<DIV dir=3Dltr><FONT face=3DArial color=3D#000000 size=3D2>Hi =
Oscar,</FONT></DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial size=3D2>&nbsp;&nbsp; Thanks for your =
reply. I am concerned that some key conferencing data items are missing =
from the model and instead addressed via extensions. </FONT></DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial size=3D2>Specifically I am talking =
about:-</FONT></DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial size=3D2>1. =
&lt;conference-password.&gt;</FONT></DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial size=3D2>&nbsp;&nbsp;&nbsp; This is a =
one-one mapping with the conference URI. Based on the IETF 68 minutes =
Re:policies, why is this field still there?</FONT></DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial size=3D2>Basically every conference =
needs at least two passwords - one for particpants&nbsp; &amp; one or =
more for moderators.</FONT></DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial size=3D2>If these fields are going to =
be provided via some policy schema, then I think that needs to be =
somehow described so there is a common definition...</FONT></DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial size=3D2>2. Demand =
conferences</FONT></DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial size=3D2>&nbsp;&nbsp; On Demand =
conferences are an industry wide recognised type of conference and =
therefore&nbsp;should be part of the model. </FONT></DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial size=3D2>3. The pool/lines pool is not =
specific to PSTN. It is applicable to VOIP also and not the same as =
&lt;maximun-user-count&gt;.</FONT></DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial size=3D2>Basically they are used to =
divide up conferencing capacity. e.g. scheduled conferences would =
typically use one pool and </FONT></DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial size=3D2>demand another in order to =
guarantee resources for the scheduled ones...</FONT></DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial size=3D2>On the recurring conference, =
the model doesnt seem to allow modfication of a particular instance in a =
recurrence pattern.</FONT></DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial size=3D2>e.g. I have a weekly =
recurring conference, on a Friday. However next Friday, the meeting =
needs to be moved forward by an hour.</FONT></DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial size=3D2>How can this be achieved via =
the model? It would be essential to be able to view/modify individual =
instances of a conference.</FONT></DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial =
size=3D2>Sean</FONT></DIV></FONT></DIV></DIV>=0A=
<DIV dir=3Dltr><BR>=0A=
<HR tabIndex=3D-1>=0A=
<FONT face=3DTahoma size=3D2><B>From:</B> Oscar Novo =
[mailto:oscar.novo@ericsson.com]<BR><B>Sent:</B> Wed 02/07/2008 =
12:25<BR><B>To:</B> Duddy, Sean (Sean); xcon@ietf.org<BR><B>Subject:</B> =
RE: [XCON] draft-ietf-xcon-common-data-model<BR></FONT><BR></DIV>=0A=
<DIV>=0A=
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =
size=3D2>Sean,</FONT></SPAN></DIV>=0A=
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =
size=3D2></FONT></SPAN>&nbsp;</DIV>=0A=
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =
size=3D2>The controls defined in the data model are really basic ones as =
we agreed in the WG. The controls you suggested in your e-mail can be =
added to the document in future extensions. Note that the data model is =
not specific to one protocol (e.g. PSTN, SIP), that's why many times the =
data model uses general naming in order to fullfil the requirements of =
all the protocols. </FONT></SPAN></DIV>=0A=
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =
size=3D2></FONT></SPAN><SPAN class=3D245204309-02072008><FONT =
face=3DArial color=3D#0000ff size=3D2></FONT></SPAN>&nbsp;</DIV>=0A=
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =
size=3D2>Regarding your comment number 4, the =
&lt;participant-passcode&gt; and &lt;administrator-passcode&gt; elements =
were defined in previous versions of the document. However, the WG =
decided (check the minutes from IETF 68) to leave out the common policy =
from the data model.&nbsp;</FONT></SPAN><SPAN =
class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =
size=3D2>The element &lt;conference-password&gt; is used to specify the =
PIN code of the conference. So, your comment number 5 is fullfil with =
this element. Concerning your comment number 6, the data model does =
define a outbound dial list, check the &lt;allowed-users-list&gt; =
element and its 'method 'attribute.&nbsp;</FONT></SPAN></DIV>=0A=
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =
size=3D2></FONT></SPAN>&nbsp;</DIV>=0A=
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =
size=3D2>Answering your general questions briefly:</FONT></SPAN></DIV>=0A=
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =
size=3D2></FONT></SPAN>&nbsp;</DIV>=0A=
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =
size=3D2>Number 1: The definition of on-demand conference in the data =
model it depends pretty much from the implementor. One option it would =
be not to defined the DTSTART and the DTEND in the &lt;base&gt; element. =
</FONT></SPAN></DIV>=0A=
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =
size=3D2>Number 2: The pool/lines pool is quiet specific to PSTN. The =
data model defines the &lt;maximum-user-count&gt; element that it could =
be used for the same purpose. Extension to this element can be done =
later. </FONT></SPAN></DIV>=0A=
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =
size=3D2>Number 3: The information for recurring conference can be =
defined in the &lt;base&gt; element. I suggested you to check RFC 2445. =
For instance, the example defined in the data model is a recurring =
conference. Check the example below:</FONT></SPAN></DIV>=0A=
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =
size=3D2></FONT></SPAN><SPAN class=3D245204309-02072008><FONT =
face=3DArial size=3D2></FONT><BR>&nbsp;PRODID:-//LlamaSpinner =
Inc.//NONSGML =
CamelCall//EN<BR>&nbsp;VERSION:2.0<BR>&nbsp;BEGIN:VEVENT<BR>&nbsp;DTSTAMP=
:20071003T140728Z<BR>&nbsp;UID:20071003T140728Z-345FDA-carol@example.com<=
BR>&nbsp;ORGANIZER:MAILTO:carol@example.com<BR>&nbsp;DTSTART:20071017T143=
000Z<BR>&nbsp;RRULE:FREQ=3DWEEKLY<BR>&nbsp;DTEND:20071217T163000Z</SPAN><=
/DIV>=0A=
<DIV><SPAN =
class=3D245204309-02072008>&nbsp;END:VEVENT<BR>&nbsp;END:VCALENDAR</DIV><=
/SPAN>=0A=
<DIV><SPAN class=3D245204309-02072008></SPAN><FONT face=3DArial><FONT =
size=3D2></FONT></FONT>&nbsp;</DIV>=0A=
<DIV><FONT face=3DArial><FONT size=3D2>C<SPAN =
class=3D245204309-02072008>heers,</SPAN></FONT></FONT></DIV>=0A=
<DIV><FONT face=3DArial><FONT size=3D2><SPAN =
class=3D245204309-02072008></SPAN></FONT></FONT>&nbsp;</DIV>=0A=
<DIV><FONT face=3DArial><FONT size=3D2><SPAN =
class=3D245204309-02072008>Oscar</SPAN></FONT></FONT></DIV>=0A=
<DIV><BR></DIV>=0A=
<DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr align=3Dleft>=0A=
<HR tabIndex=3D-1>=0A=
<FONT face=3DTahoma size=3D2><B>From:</B> xcon-bounces@ietf.org =
[mailto:xcon-bounces@ietf.org] <B>On Behalf Of </B>Duddy, Sean =
(Sean)<BR><B>Sent:</B> 30. kes=E4kuuta 2008 13:17<BR><B>To:</B> =
xcon@ietf.org<BR><B>Subject:</B> [XCON] =
draft-ietf-xcon-common-data-model<BR></FONT><BR></DIV>=0A=
<DIV></DIV>=0A=
<DIV>=0A=
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial =
size=3D2>Hi,</FONT></SPAN></DIV>=0A=
<DIV><FONT face=3DArial><FONT size=3D2><SPAN =
class=3D880305811-26062008><SPAN =
class=3D419190710-30062008>&nbsp;&nbsp;&nbsp; Some comments on the =
content of this data model re: audio conferencing =
</SPAN></SPAN></FONT></FONT></DIV>=0A=
<DIV><FONT face=3DArial><FONT size=3D2><SPAN =
class=3D880305811-26062008><SPAN =
class=3D419190710-30062008></SPAN></SPAN><SPAN =
class=3D880305811-26062008><SPAN class=3D419190710-30062008>(I know =
these could be accomodated using =
extensions</SPAN></SPAN></FONT></FONT><SPAN =
class=3D880305811-26062008><FONT face=3DArial size=3D2><SPAN =
class=3D419190710-30062008>&nbsp;but maybe they should be part of the =
standard model as they do seem central to any conferencing =
solution)</SPAN></FONT></SPAN></DIV>=0A=
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial =
size=3D2></FONT></SPAN>&nbsp;</DIV>=0A=
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>1. =
Conference recording is missing. Need attribute(s) to indicate if =
recording is allowed and how it is triggered (automatic or =
manual)</FONT></SPAN></DIV>=0A=
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>2. =
Conference playback is missing. Need attribute to indicate if playback =
is allowed.</FONT></SPAN></DIV>=0A=
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>3. =
Music source selection is missing. Need to be able to set the music =
source to be played to particpants</FONT></SPAN></DIV>=0A=
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial =
size=3D2>waiting to get into the conference.</FONT></SPAN></DIV>=0A=
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>4. =
Moderator and conferee passcode. I think the model calls this the =
&lt;conference-password&gt;, but there needs </FONT></SPAN></DIV>=0A=
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>to be =
two, one for moderator and one for conferee. Also as these are DTMF =
digits, I think the term 'passcode'</FONT></SPAN></DIV>=0A=
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>is =
more appropriate than 'password'.</FONT></SPAN></DIV>=0A=
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>5. =
Apart from the access control lists, the model seems to be lacking in =
security, specifically there needs to be a </FONT></SPAN></DIV>=0A=
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial =
size=3D2>method&nbsp;to specify PIN codes associated with a conference =
i.e. user needs to enter this PIN to gain entry to =
conference</FONT></SPAN></DIV>=0A=
<DIV><FONT face=3DArial><FONT size=3D2><SPAN =
class=3D880305811-26062008>6. Outbound dial list is missing. Need to be =
able to configure URIs that the moderator/operator can dial out to when =
conference opens.</SPAN></FONT></FONT></DIV>=0A=
<DIV><FONT face=3DArial><FONT size=3D2><SPAN =
class=3D880305811-26062008>Also need to configure how the people on the =
list get dialled e.g. manually by operator or automatic when moderator =
joins.</SPAN></FONT></FONT></DIV>=0A=
<DIV><FONT face=3DArial><FONT size=3D2><SPAN =
class=3D880305811-26062008>Need to configure what message gets played to =
them initially also.</SPAN></FONT></FONT></DIV>=0A=
<DIV><FONT face=3DArial><FONT size=3D2><SPAN =
class=3D880305811-26062008></SPAN></FONT></FONT><FONT face=3DArial><FONT =
size=3D2><SPAN class=3D880305811-26062008>7. Entry/Exit tone =
configuration is missing. Need to be able to specify what should =
get&nbsp;played when particpants enter/leave </SPAN></FONT></FONT></DIV>=0A=
<DIV><FONT face=3DArial><FONT size=3D2><SPAN =
class=3D880305811-26062008>e.g. =
tone,message,tone&amp;message,none&nbsp;</SPAN></FONT></FONT></DIV>=0A=
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>=0A=
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial =
size=3D2>General questions:</FONT></SPAN></DIV>=0A=
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>1. How =
would on-demand conferences be modelled? (Demand conferences are =
conferences that people can dial into any time i.e. there would be no =
scheduling information).</FONT></SPAN></DIV>=0A=
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>2. =
There is no mention of port/line pools. e.g. scheduled conferences would =
typically use ports from a reserved pool so one is guaranteed to get =
into the conference</FONT></SPAN></DIV>=0A=
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>at =
conference start time. I think there should be an attribute to specify =
what pool to use - reserved,unreserved,other.</FONT></SPAN></DIV>=0A=
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>3. For =
recurring conferences, where does the original recurrence info get =
stored? i.e. there is a &lt;conference-time&gt; entry for each =
recurrence which I assume</FONT></SPAN></DIV>=0A=
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>will =
have the start/end timing info for that particular recurrence, but where =
does the original pattern get stored and how does the model maintain the =
releationship</FONT></SPAN></DIV>=0A=
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial =
size=3D2>between the conferences that make up the pattern? This =
relationship would be handy to apply a modification to all conferences =
that make up a recurrence pattern.</FONT></SPAN></DIV>=0A=
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial =
size=3D2></FONT></SPAN>&nbsp;</DIV>=0A=
<DIV><SPAN class=3D880305811-26062008></SPAN><SPAN =
class=3D880305811-26062008><FONT face=3DArial =
size=3D2>Sean</FONT></SPAN></DIV></DIV></DIV></BODY></HTML>
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From: "Oscar Novo" <oscar.novo@ericsson.com>
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Hi again,
=20
Some comments inline as [ON].
=20
Oscar

________________________________

From: Duddy, Sean (Sean) [mailto:duddy@avaya.com]=20
Sent: 2. hein=E4kuuta 2008 18:02
To: Oscar Novo; xcon@ietf.org
Subject: RE: [XCON] draft-ietf-xcon-common-data-model


Hi Oscar,
   Thanks for your reply. I am concerned that some key conferencing data =
items are missing from the model and instead addressed via extensions.=20
Specifically I am talking about:-
=20
1. <conference-password.>
    This is a one-one mapping with the conference URI. Based on the IETF =
68 minutes Re:policies, why is this field still there?
Basically every conference needs at least two passwords - one for =
particpants  & one or more for moderators.
If these fields are going to be provided via some policy schema, then I =
think that needs to be somehow described so there is a common =
definition...
=20
[ON] After Chicago's IETF some discussions between SIMPLE and XCON WGs =
were made to analyzes the gaps between these two WGs. One document was =
created: 'An Analysis of Feature Parity Between XCON/SIMPLE-Based =
Chatrooms and Other Chatrooms'. According to that document, the XCON =
data model  This document propose some modificaitons in the XCON data =
model to fill the gaps between both working groups. One of the elements =
added was <conference-password>.
=20
Note as well that the <conference-password> accepts more than one =
occurence. So, the mapping of this element is one-to-many.=20
=20
 2. Demand conferences
   On Demand conferences are an industry wide recognised type of =
conference and therefore should be part of the model. =20
=20
[ON] I didn't say the model doesn't support demand conferences. The data =
model does support demand conferences but it's up to the implementor how =
to implement them. The data model just give the 'tools' and 'elements' =
to do it. It's out of the scope of the document to explain the diferent =
scenarios for demand conferences.=20
=20
3. The pool/lines pool is not specific to PSTN. It is applicable to VOIP =
also and not the same as <maximun-user-count>.
Basically they are used to divide up conferencing capacity. e.g. =
scheduled conferences would typically use one pool and=20
demand another in order to guarantee resources for the scheduled ones...
=20
On the recurring conference, the model doesnt seem to allow modfication =
of a particular instance in a recurrence pattern.
e.g. I have a weekly recurring conference, on a Friday. However next =
Friday, the meeting needs to be moved forward by an hour.
How can this be achieved via the model? It would be essential to be able =
to view/modify individual instances of a conference.=20
=20
[ON]  I'm not an ICal expert but ICal defines different exception =
operations for recurring conferences. For instance you could use EXDATE =
or EXRULE operation to limit a recurring conference. As well you can =
create CHILD and PARENT recurrences to modify the time in a conference. =
Another option could be to reeschedule your conference. Actually, this =
is a ICal issue, not a XCON data model issue.
=20
=20
Sean

________________________________

From: Oscar Novo [mailto:oscar.novo@ericsson.com]
Sent: Wed 02/07/2008 12:25
To: Duddy, Sean (Sean); xcon@ietf.org
Subject: RE: [XCON] draft-ietf-xcon-common-data-model


Sean,
=20
The controls defined in the data model are really basic ones as we =
agreed in the WG. The controls you suggested in your e-mail can be added =
to the document in future extensions. Note that the data model is not =
specific to one protocol (e.g. PSTN, SIP), that's why many times the =
data model uses general naming in order to fullfil the requirements of =
all the protocols.=20
=20
Regarding your comment number 4, the <participant-passcode> and =
<administrator-passcode> elements were defined in previous versions of =
the document. However, the WG decided (check the minutes from IETF 68) =
to leave out the common policy from the data model. The element =
<conference-password> is used to specify the PIN code of the conference. =
So, your comment number 5 is fullfil with this element. Concerning your =
comment number 6, the data model does define a outbound dial list, check =
the <allowed-users-list> element and its 'method 'attribute.=20
=20
Answering your general questions briefly:
=20
Number 1: The definition of on-demand conference in the data model it =
depends pretty much from the implementor. One option it would be not to =
defined the DTSTART and the DTEND in the <base> element.=20
Number 2: The pool/lines pool is quiet specific to PSTN. The data model =
defines the <maximum-user-count> element that it could be used for the =
same purpose. Extension to this element can be done later.=20
Number 3: The information for recurring conference can be defined in the =
<base> element. I suggested you to check RFC 2445. For instance, the =
example defined in the data model is a recurring conference. Check the =
example below:

 PRODID:-//LlamaSpinner Inc.//NONSGML CamelCall//EN
 VERSION:2.0
 BEGIN:VEVENT
 DTSTAMP:20071003T140728Z
 UID:20071003T140728Z-345FDA-carol@example.com
 ORGANIZER:MAILTO:carol@example.com
 DTSTART:20071017T143000Z
 RRULE:FREQ=3DWEEKLY
 DTEND:20071217T163000Z
 END:VEVENT
 END:VCALENDAR
=20
Cheers,
=20
Oscar

________________________________

From: xcon-bounces@ietf.org [mailto:xcon-bounces@ietf.org] On Behalf Of =
Duddy, Sean (Sean)
Sent: 30. kes=E4kuuta 2008 13:17
To: xcon@ietf.org
Subject: [XCON] draft-ietf-xcon-common-data-model


Hi,
    Some comments on the content of this data model re: audio =
conferencing=20
(I know these could be accomodated using extensions but maybe they =
should be part of the standard model as they do seem central to any =
conferencing solution)
=20
1. Conference recording is missing. Need attribute(s) to indicate if =
recording is allowed and how it is triggered (automatic or manual)
2. Conference playback is missing. Need attribute to indicate if =
playback is allowed.
3. Music source selection is missing. Need to be able to set the music =
source to be played to particpants
waiting to get into the conference.
4. Moderator and conferee passcode. I think the model calls this the =
<conference-password>, but there needs=20
to be two, one for moderator and one for conferee. Also as these are =
DTMF digits, I think the term 'passcode'
is more appropriate than 'password'.
5. Apart from the access control lists, the model seems to be lacking in =
security, specifically there needs to be a=20
method to specify PIN codes associated with a conference i.e. user needs =
to enter this PIN to gain entry to conference
6. Outbound dial list is missing. Need to be able to configure URIs that =
the moderator/operator can dial out to when conference opens.
Also need to configure how the people on the list get dialled e.g. =
manually by operator or automatic when moderator joins.
Need to configure what message gets played to them initially also.
7. Entry/Exit tone configuration is missing. Need to be able to specify =
what should get played when particpants enter/leave=20
e.g. tone,message,tone&message,none=20
=20
General questions:
1. How would on-demand conferences be modelled? (Demand conferences are =
conferences that people can dial into any time i.e. there would be no =
scheduling information).
2. There is no mention of port/line pools. e.g. scheduled conferences =
would typically use ports from a reserved pool so one is guaranteed to =
get into the conference
at conference start time. I think there should be an attribute to =
specify what pool to use - reserved,unreserved,other.
3. For recurring conferences, where does the original recurrence info =
get stored? i.e. there is a <conference-time> entry for each recurrence =
which I assume
will have the start/end timing info for that particular recurrence, but =
where does the original pattern get stored and how does the model =
maintain the releationship
between the conferences that make up the pattern? This relationship =
would be handy to apply a modification to all conferences that make up a =
recurrence pattern.
=20
Sean

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<HTML dir=3Dltr><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<META content=3D"MSHTML 6.00.2800.1611" name=3DGENERATOR></HEAD>
<BODY>
<DIV><SPAN class=3D712125312-03072008><FONT face=3DArial color=3D#0000ff =
size=3D2>Hi=20
again,</FONT></SPAN></DIV>
<DIV><SPAN class=3D712125312-03072008><FONT face=3DArial color=3D#0000ff =

size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D712125312-03072008><FONT face=3DArial color=3D#0000ff =
size=3D2>Some=20
comments inline as [ON].</FONT></SPAN></DIV>
<DIV><SPAN class=3D712125312-03072008><FONT face=3DArial color=3D#0000ff =

size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D712125312-03072008><FONT face=3DArial color=3D#0000ff =

size=3D2>Oscar</FONT></SPAN></DIV><BR>
<DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr align=3Dleft>
<HR tabIndex=3D-1>
<FONT face=3DTahoma size=3D2><B>From:</B> Duddy, Sean (Sean)=20
[mailto:duddy@avaya.com] <BR><B>Sent:</B> 2. hein=E4kuuta 2008 =
18:02<BR><B>To:</B>=20
Oscar Novo; xcon@ietf.org<BR><B>Subject:</B> RE: [XCON]=20
draft-ietf-xcon-common-data-model<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV id=3DidOWAReplyText88520 dir=3Dltr>
<DIV dir=3Dltr><FONT color=3D#000000>
<DIV dir=3Dltr><FONT face=3DArial color=3D#000000 size=3D2>Hi =
Oscar,</FONT></DIV>
<DIV dir=3Dltr><FONT face=3DArial size=3D2>&nbsp;&nbsp; Thanks for your =
reply. I am=20
concerned that some key conferencing data items are missing from the =
model and=20
instead addressed via extensions. </FONT></DIV>
<DIV dir=3Dltr><FONT face=3DArial size=3D2>Specifically I am talking=20
about:-</FONT></DIV>
<DIV dir=3Dltr><FONT face=3DArial color=3D#0000ff =
size=3D2></FONT>&nbsp;</DIV>
<DIV dir=3Dltr><FONT face=3DArial size=3D2>1.=20
&lt;conference-password.&gt;</FONT></DIV>
<DIV dir=3Dltr><FONT face=3DArial size=3D2>&nbsp;&nbsp;&nbsp; This is a =
one-one=20
mapping with the conference URI. Based on the IETF 68 minutes =
Re:policies, why=20
is this field still there?</FONT></DIV>
<DIV dir=3Dltr><FONT face=3DArial size=3D2>Basically every conference =
needs at least=20
two passwords - one for particpants&nbsp; &amp; one or more for=20
moderators.</FONT></DIV>
<DIV dir=3Dltr><FONT face=3DArial size=3D2>If these fields are going to =
be provided=20
via some policy schema, then I think that needs to be somehow described =
so there=20
is a common definition...</FONT></DIV>
<DIV dir=3Dltr><FONT face=3DArial><FONT size=3D2><SPAN =
class=3D712125312-03072008><FONT=20
color=3D#0000ff>&nbsp;</FONT></SPAN></FONT></FONT></DIV>
<DIV dir=3Dltr><FONT face=3DArial><FONT size=3D2><SPAN =
class=3D712125312-03072008>
<DIV><SPAN class=3D712125312-03072008><FONT face=3DArial color=3D#0000ff =
size=3D2>[ON]=20
After Chicago's IETF some discussions between SIMPLE and XCON WGs were =
made to=20
analyzes the gaps between these two WGs. One document was created:=20
</FONT></SPAN><SPAN class=3D712125312-03072008><FONT face=3DArial =
color=3D#0000ff=20
size=3D2>'An Analysis of Feature Parity Between XCON/SIMPLE-Based =
Chatrooms and=20
Other Chatrooms'. According to that document, the XCON data model =
&nbsp;This=20
document propose some modificaitons in the XCON data model to fill the =
gaps=20
between both working groups. One of the elements added was=20
&lt;conference-password&gt;.</FONT></SPAN></DIV>
<DIV><SPAN class=3D712125312-03072008><FONT face=3DArial color=3D#0000ff =

size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D712125312-03072008><FONT face=3DArial color=3D#0000ff =
size=3D2>Note=20
as well that the &lt;conference-password&gt; accepts more than one =
occurence.=20
So, the mapping of this element is one-to-many.=20
</DIV></FONT></SPAN></SPAN></FONT></FONT></DIV>
<DIV dir=3Dltr><FONT face=3DArial><FONT size=3D2><SPAN=20
class=3D712125312-03072008></SPAN></FONT></FONT>&nbsp;</DIV>
<DIV dir=3Dltr><FONT face=3DArial><FONT size=3D2><SPAN=20
class=3D712125312-03072008>&nbsp;</SPAN>2. Demand =
conferences</FONT></FONT></DIV>
<DIV dir=3Dltr><FONT face=3DArial><FONT size=3D2>&nbsp;&nbsp; On Demand =
conferences=20
are an industry wide recognised type of conference and =
therefore&nbsp;should be=20
part of the model.&nbsp;<SPAN class=3D712125312-03072008><FONT=20
color=3D#0000ff>&nbsp;</FONT></SPAN></FONT></FONT></DIV>
<DIV dir=3Dltr><FONT face=3DArial><FONT size=3D2><SPAN=20
class=3D712125312-03072008></SPAN></FONT></FONT>&nbsp;</DIV>
<DIV dir=3Dltr><FONT face=3DArial><FONT size=3D2><SPAN =
class=3D712125312-03072008><FONT=20
color=3D#0000ff>[ON] I didn't say the model doesn't support demand =
conferences.=20
The data model does support demand conferences but it's up to the =
implementor=20
how to implement them. The data model just give the 'tools' and =
'elements' to do=20
it. It's out of the scope of the document to explain the diferent =
scenarios for=20
demand conferences. </FONT></SPAN></FONT></FONT></DIV>
<DIV dir=3Dltr><FONT face=3DArial><FONT size=3D2><SPAN=20
class=3D712125312-03072008>&nbsp;</SPAN></FONT></FONT></DIV>
<DIV dir=3Dltr><FONT face=3DArial size=3D2>3. The pool/lines pool is not =
specific to=20
PSTN. It is applicable to VOIP also and not the same as=20
&lt;maximun-user-count&gt;.</FONT></DIV>
<DIV dir=3Dltr><FONT face=3DArial size=3D2>Basically they are used to =
divide up=20
conferencing capacity. e.g. scheduled conferences would typically use =
one pool=20
and </FONT></DIV>
<DIV dir=3Dltr><FONT face=3DArial size=3D2>demand another in order to =
guarantee=20
resources for the scheduled ones...</FONT></DIV>
<DIV dir=3Dltr><SPAN class=3D712125312-03072008><FONT face=3DArial=20
size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV dir=3Dltr><FONT face=3DArial size=3D2>On the recurring conference, =
the model=20
doesnt seem to allow modfication of a particular instance in a =
recurrence=20
pattern.</FONT></DIV>
<DIV dir=3Dltr><FONT face=3DArial size=3D2>e.g. I have a weekly =
recurring conference,=20
on a Friday. However next Friday, the meeting needs to be moved forward =
by an=20
hour.</FONT></DIV>
<DIV dir=3Dltr><FONT face=3DArial><FONT size=3D2>How can this be =
achieved via the=20
model? It would be essential to be able to view/modify individual =
instances of a=20
conference.<SPAN class=3D712125312-03072008><FONT=20
color=3D#0000ff>&nbsp;</FONT></SPAN></FONT></FONT></DIV>
<DIV dir=3Dltr><FONT face=3DArial><FONT size=3D2><SPAN=20
class=3D712125312-03072008></SPAN></FONT></FONT>&nbsp;</DIV>
<DIV dir=3Dltr><FONT face=3DArial><FONT size=3D2><SPAN =
class=3D712125312-03072008><FONT=20
color=3D#0000ff>[ON] </FONT>&nbsp;<FONT color=3D#0000ff>I'm not an ICal =
expert but=20
ICal defines different exception operations for recurring conferences. =
For=20
instance you could use EXDATE or&nbsp;EXRULE&nbsp;operation to limit a =
recurring=20
conference. As well you can create CHILD and PARENT recurrences to =
modify the=20
time in a conference. Another option could be to reeschedule your =
conference.=20
Actually, this is a ICal issue, not a XCON data model=20
issue.</FONT></SPAN></FONT></FONT></DIV>
<DIV dir=3Dltr><FONT face=3DArial><FONT color=3D#0000ff size=3D2><SPAN=20
class=3D712125312-03072008></SPAN></FONT></FONT>&nbsp;</DIV>
<DIV dir=3Dltr><FONT face=3DArial><FONT color=3D#000000 size=3D2><SPAN=20
class=3D712125312-03072008></SPAN></FONT></FONT><FONT face=3DArial=20
size=3D2></FONT>&nbsp;</DIV>
<DIV dir=3Dltr><FONT face=3DArial =
size=3D2>Sean</FONT></DIV></FONT></DIV></DIV>
<DIV dir=3Dltr><BR>
<HR tabIndex=3D-1>
<FONT face=3DTahoma size=3D2><B>From:</B> Oscar Novo=20
[mailto:oscar.novo@ericsson.com]<BR><B>Sent:</B> Wed 02/07/2008=20
12:25<BR><B>To:</B> Duddy, Sean (Sean); xcon@ietf.org<BR><B>Subject:</B> =
RE:=20
[XCON] draft-ietf-xcon-common-data-model<BR></FONT><BR></DIV>
<DIV>
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =

size=3D2>Sean,</FONT></SPAN></DIV>
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =

size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =
size=3D2>The=20
controls defined in the data model are really basic ones as we agreed in =
the WG.=20
The controls you suggested in your e-mail can be added to the document =
in future=20
extensions. Note that the data model is not specific to one protocol =
(e.g. PSTN,=20
SIP), that's why many times the data model uses general naming in order =
to=20
fullfil the requirements of all the protocols. </FONT></SPAN></DIV>
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =

size=3D2></FONT></SPAN><SPAN class=3D245204309-02072008><FONT =
face=3DArial=20
color=3D#0000ff size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =

size=3D2>Regarding your comment number 4, the =
&lt;participant-passcode&gt; and=20
&lt;administrator-passcode&gt; elements were defined in previous =
versions of the=20
document. However, the WG decided (check the minutes from IETF 68) to =
leave out=20
the common policy from the data model.&nbsp;</FONT></SPAN><SPAN=20
class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =
size=3D2>The element=20
&lt;conference-password&gt; is used to specify the PIN code of the =
conference.=20
So, your comment number 5 is fullfil with this element. Concerning your =
comment=20
number 6, the data model does define a outbound dial list, check the=20
&lt;allowed-users-list&gt; element and its 'method=20
'attribute.&nbsp;</FONT></SPAN></DIV>
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =

size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =

size=3D2>Answering your general questions briefly:</FONT></SPAN></DIV>
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =

size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =
size=3D2>Number=20
1: The definition of on-demand conference in the data model it depends =
pretty=20
much from the implementor. One option it would be not to defined the =
DTSTART and=20
the DTEND in the &lt;base&gt; element. </FONT></SPAN></DIV>
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =
size=3D2>Number=20
2: The pool/lines pool is quiet specific to PSTN. The data model defines =
the=20
&lt;maximum-user-count&gt; element that it could be used for the same =
purpose.=20
Extension to this element can be done later. </FONT></SPAN></DIV>
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =
size=3D2>Number=20
3: The information for recurring conference can be defined in the =
&lt;base&gt;=20
element. I suggested you to check RFC 2445. For instance, the example =
defined in=20
the data model is a recurring conference. Check the example=20
below:</FONT></SPAN></DIV>
<DIV><SPAN class=3D245204309-02072008><FONT face=3DArial color=3D#0000ff =

size=3D2></FONT></SPAN><SPAN class=3D245204309-02072008><FONT =
face=3DArial=20
size=3D2></FONT><BR>&nbsp;PRODID:-//LlamaSpinner Inc.//NONSGML=20
CamelCall//EN<BR>&nbsp;VERSION:2.0<BR>&nbsp;BEGIN:VEVENT<BR>&nbsp;DTSTAMP=
:20071003T140728Z<BR>&nbsp;UID:20071003T140728Z-345FDA-carol@example.com<=
BR>&nbsp;ORGANIZER:MAILTO:carol@example.com<BR>&nbsp;DTSTART:20071017T143=
000Z<BR>&nbsp;RRULE:FREQ=3DWEEKLY<BR>&nbsp;DTEND:20071217T163000Z</SPAN><=
/DIV>
<DIV><SPAN=20
class=3D245204309-02072008>&nbsp;END:VEVENT<BR>&nbsp;END:VCALENDAR</DIV><=
/SPAN>
<DIV><SPAN class=3D245204309-02072008></SPAN><FONT face=3DArial><FONT=20
size=3D2></FONT></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial><FONT size=3D2>C<SPAN=20
class=3D245204309-02072008>heers,</SPAN></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><SPAN=20
class=3D245204309-02072008></SPAN></FONT></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial><FONT size=3D2><SPAN=20
class=3D245204309-02072008>Oscar</SPAN></FONT></FONT></DIV>
<DIV><BR></DIV>
<DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr align=3Dleft>
<HR tabIndex=3D-1>
<FONT face=3DTahoma size=3D2><B>From:</B> xcon-bounces@ietf.org=20
[mailto:xcon-bounces@ietf.org] <B>On Behalf Of </B>Duddy, Sean=20
(Sean)<BR><B>Sent:</B> 30. kes=E4kuuta 2008 13:17<BR><B>To:</B>=20
xcon@ietf.org<BR><B>Subject:</B> [XCON]=20
draft-ietf-xcon-common-data-model<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial=20
size=3D2>Hi,</FONT></SPAN></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><SPAN =
class=3D880305811-26062008><SPAN=20
class=3D419190710-30062008>&nbsp;&nbsp;&nbsp; Some comments on the =
content of this=20
data model re: audio conferencing </SPAN></SPAN></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><SPAN =
class=3D880305811-26062008><SPAN=20
class=3D419190710-30062008></SPAN></SPAN><SPAN =
class=3D880305811-26062008><SPAN=20
class=3D419190710-30062008>(I know these could be accomodated using=20
extensions</SPAN></SPAN></FONT></FONT><SPAN =
class=3D880305811-26062008><FONT=20
face=3DArial size=3D2><SPAN class=3D419190710-30062008>&nbsp;but maybe =
they should be=20
part of the standard model as they do seem central to any conferencing=20
solution)</SPAN></FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial=20
size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>1. =
Conference=20
recording is missing. Need attribute(s) to indicate if recording is =
allowed and=20
how it is triggered (automatic or manual)</FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>2. =
Conference=20
playback is missing. Need attribute to indicate if playback is=20
allowed.</FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>3. =
Music source=20
selection is missing. Need to be able to set the music source to be =
played to=20
particpants</FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial =
size=3D2>waiting to get into=20
the conference.</FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>4. =
Moderator and=20
conferee passcode. I think the model calls this the =
&lt;conference-password&gt;,=20
but there needs </FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>to be =
two, one for=20
moderator and one for conferee. Also as these are DTMF digits, I think =
the term=20
'passcode'</FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>is =
more appropriate=20
than 'password'.</FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>5. =
Apart from the=20
access control lists, the model seems to be lacking in security, =
specifically=20
there needs to be a </FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial =
size=3D2>method&nbsp;to=20
specify PIN codes associated with a conference i.e. user needs to enter =
this PIN=20
to gain entry to conference</FONT></SPAN></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><SPAN =
class=3D880305811-26062008>6. Outbound=20
dial list is missing. Need to be able to configure URIs that the=20
moderator/operator can dial out to when conference=20
opens.</SPAN></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><SPAN =
class=3D880305811-26062008>Also need to=20
configure how the people on the list get dialled e.g. manually by =
operator or=20
automatic when moderator joins.</SPAN></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><SPAN =
class=3D880305811-26062008>Need to=20
configure what message gets played to them initially=20
also.</SPAN></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><SPAN=20
class=3D880305811-26062008></SPAN></FONT></FONT><FONT face=3DArial><FONT =

size=3D2><SPAN class=3D880305811-26062008>7. Entry/Exit tone =
configuration is=20
missing. Need to be able to specify what should get&nbsp;played when =
particpants=20
enter/leave </SPAN></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><SPAN =
class=3D880305811-26062008>e.g.=20
tone,message,tone&amp;message,none&nbsp;</SPAN></FONT></FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial =
size=3D2>General=20
questions:</FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>1. How =
would=20
on-demand conferences be modelled? (Demand conferences are conferences =
that=20
people can dial into any time i.e. there would be no scheduling=20
information).</FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>2. =
There is no=20
mention of port/line pools. e.g. scheduled conferences would typically =
use ports=20
from a reserved pool so one is guaranteed to get into the=20
conference</FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>at =
conference start=20
time. I think there should be an attribute to specify what pool to use - =

reserved,unreserved,other.</FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>3. For =
recurring=20
conferences, where does the original recurrence info get stored? i.e. =
there is a=20
&lt;conference-time&gt; entry for each recurrence which I=20
assume</FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial size=3D2>will =
have the=20
start/end timing info for that particular recurrence, but where does the =

original pattern get stored and how does the model maintain the=20
releationship</FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial =
size=3D2>between the=20
conferences that make up the pattern? This relationship would be handy =
to apply=20
a modification to all conferences that make up a recurrence=20
pattern.</FONT></SPAN></DIV>
<DIV><SPAN class=3D880305811-26062008><FONT face=3DArial=20
size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D880305811-26062008></SPAN><SPAN =
class=3D880305811-26062008><FONT=20
face=3DArial size=3D2>Sean</FONT></SPAN></DIV></DIV></DIV></BODY></HTML>

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If you would like agenda time in Dublin, email Adam and myself 
indicating your name, the draft, and how much time you would like.

Thanks,
Alan
co-chair XCON
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I will be out of the office starting  07/07/2008 and will not return until
07/21/2008.

I will respond to your message when I return.

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IETF-72

TUESDAY, July 29, 2008

1740-1840 Afternoon Session III

Convention 3    RAI    xcon    Centralized Conferencing WG

CHAIRS: Adam Roach <adam@nostrum.com>
                Alan Johnston <alan@sipstation.com>

1740 - 1745     Agenda Bash (Chairs) 5 minutes

1745 - 1750     Status (Chairs)  5 minutes

1750 - 1810     CCMP Protocol (Mary Barnes) 20 minutes
                        
http://tools.ietf.org/id/draft-ietf-xcon-ccmp-00.txt

1810 - 1825     Call Flows/Examples (Mary Barnes) 15 minutes
                        
http://tools.ietf.org/id/draft-barnes-xcon-examples-00.txt

1825 - 1835     CCMP Demo (Simon Romano)  5 minutes

1830 - 1840     Open Discussion  10 minutes


Thanks,
Alan
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