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From owner-pint-outgoing@lists.research.bell-labs.com  Wed Feb 16 17:50:44 2000
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Date: Wed, 16 Feb 2000 11:08:11 +0800
From: wmshen <wmshen@public.wh.hb.cn>
Subject: question on video transcoder or gateway
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Hello, all experts,
=20
I am a Ph.D student working on video communication. I am wondering about =
how the video transcoder/gateway works between H.261 and H.263, and =
between IP network and PSTN or ISDN, in paticular i wonder whether there =
is a method by which bitstreams can be translated directly between H.261 =
and H.263 format.
=20
Who knows the technique details on above topics or where may i get some =
useful reference infomation?
=20
Any help will be approciated.
=20
=20
Weiming Shen
=20

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<DIV><FONT color=3D#000000 face=3D"Times New Roman CE" =
size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT color=3D#000000 face=3D"Times New Roman CE" size=3D2>I am a =
Ph.D student=20
working on video communication. I am wondering about how the video=20
transcoder/gateway works between H.261 and H.263, and between IP network =
and=20
PSTN or ISDN, in paticular i wonder whether there is a method by which=20
bitstreams can be translated directly between H.261 and H.263=20
format.</FONT></DIV>
<DIV><FONT color=3D#000000 face=3D"Times New Roman CE" =
size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT color=3D#000000 face=3D"Times New Roman CE" size=3D2>Who =
knows the=20
technique details on above topics or where may i get some useful =
reference=20
infomation?</FONT></DIV>
<DIV><FONT color=3D#000000 face=3D"Times New Roman CE" =
size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT color=3D#000000 face=3D"Times New Roman CE" size=3D2>Any help =
will be=20
approciated.</FONT></DIV>
<DIV><FONT color=3D#000000 face=3D"Times New Roman CE" =
size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT color=3D#000000 face=3D"Times New Roman CE" =
size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT color=3D#000000 face=3D"Times New Roman CE" size=3D2>Weiming=20
Shen</FONT></DIV>
<DIV><FONT color=3D#000000 face=3D"Times New Roman CE"=20
size=3D2>&nbsp;</FONT></DIV></DIV></BODY></HTML>

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--NextPart

A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the PSTN and Internet Internetworking Working Group of the IETF.

	Title		: The PINT Service Protocol:Extensions to SIP and SDP  
                          for IP Access to Telephone Call Services
	Author(s)	: S. Petrack, L. Conroy
	Filename	: draft-ietf-pint-protocol-03.txt
	Pages		: 63
	Date		: 18-Feb-00
	
This document contains the specification of the PINT Service Protocol 1.0, which defines a protocol for invoking certain telephone services from an IP network. These services include placing basic calls, sending and receiving faxes, and receiving content over the telephone. The protocol is specified as a set of enhancements and additions to the SIP 2.0 and SDP protocols.
This document is intended for the PSTN-Internet Interworking (PINT) working group of the Internet Engineering Task Force. Comments are solicited and should be addressed to the working group's mailing list at
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From owner-pint-outgoing@lists.research.bell-labs.com  Mon Feb 21 15:12:51 2000
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hai experts,

i am a student and this is my thesis semester. I'm working on voice over
ip. I have thought of testing some of the existing protocols and if
possible then try to implement using some simulator or so. But the problem
is that i'm not able to find some technical stuff needed. 

i need some technical info which talks about internetworking pstn with ip
networks or where can find them. ur help would be of very use to me and
appreciated..

thanx
sasha 









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From owner-pint-outgoing@lists.research.bell-labs.com  Mon Feb 21 21:57:32 2000
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Date: Mon, 21 Feb 2000 21:54:19 -0500
From: Igor Faynberg <faynberg@bell-labs.com>
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Ladies and Gentlemen:

In our State of the WG message, Steve and I informed you about the IESG comments
in the Last Call process.

We are happy to say now that these comments have been addressed by our
editors--severe flu, terrible snowstorms, and heavy travel in addition to day
jobs--notwithstanding.

The new (version 3) PINT Protocol draft is now available (please see
http://www.ietf.org/internet-drafts/draft-ietf-pint-protocol-03.txt; you can
also pick it up from the IETF PINT page). In addition, Lawrence and Scott--to
whom many thanks!--provided detailed responses to specific comments and
suggestions as well as the summary of changes, which I am attaching to this
note.

Since we are not quite done with the immediate charter work, Steve and I see no
reason to meet in Adelaide.

With best regards,

Igor

ATTACHMENT:

Lawrence's responses (marked LWC)

Re mimetype comments:
LWC> Many thanks for the pointer to RFC2387.
LWC> multipart/related seems to be designed to indicate the kind of
LWC> situation we have in PINT, where sub-parts holding content are to be
LWC> processed along with a sub-part that holds the session description.
LWC> I've added a recommendation that it should be used, and a reference to
LWC> the RFC.

Re. minor typos:
LWC> Thanks for pointing them out. Fixed throughout. e.g. I've corrected
LWC> the spelling of call center. Duh!
LWC> Likewise, have changed should to SHOULD, fail to decline/reject, and
LWC> other small changes as suggested.
LWC> The rest is intended to be English, so if there are still
LWC> lapses into Swahili, please remind me.
LWC> On the same theme, I've tweaked the descriptions that follow a
LWC> couple of the examples; they were making assumptions that were not
LWC> warranted for the examples given.

Re. layout:
LWC> The document should now be in valid layout.

Re. major typos:
LWC> I must appologise for a great deal of confusion spread by my missing
LWC> the outdated "BYE" references thoughout the section on SUB/NOT/UNSUB.
LWC> These should ALL have been replaced with UNSUB.

LWC> The state model is really that simple, honest. I have not ASCIIfied
LWC> the SUB/NOT/UNSUB message sequence charts (I have then in PDF format
LWC> if that's useful, but they lose a lot in the conversion to ASCII).

Re.clarity of descriptions
LWC> I've taken the oppertunity (fixing major typo) to tweak the text in
LWC> 3.5.3 and in 3.5.8.; I hope that they are clearer now.

Re. Introduction
LWC> Similarly, the descrition of what PINT is trying to do in the
LWC> introduction has thrown some people, so I've tidied it up.
LWC> I've also put in a pointer to the summary lists in section 3.2,
LWC> so people can jump right to that rather than wading through
LWC> the service descriptions.

Re. Request-to-Fax and Request-to-Hear-Content service descriptions:
LWC> The service descriptions are a little terse, and so are open
LWC> confusion. I've added a couple of sentences to the Request-to-
LWC> -Hear-Content description, emphasising that how the PINT request
LWC> is formulated is not our problem, and the aim of a user is to
LWC> hear a translation of some content, or to have that content spoken.

LWC> I believe that it's called Request To Hear Content in the ITU
LWC> service description (if you look, you may notice some similarities)
LWC> so unless there's a good reason not to, perhaps it would be a good
LWC> idea to keep the heading name as is.

LWC> The Request-to-Fax description has obviously bemused people. The
LWC> aim is to ask for a fax to be sent to a fax machine that appears
LWC> to be connected to the PSTN. It was originally two services (Click
LWC> -to-Fax and Click-to-Fax-Back) and I believe that it still is
LWC> described as two services in the ITU docs.
LWC> The goal of either variant is to have a facsimile generated from
LWC> some content appear on a fax machine on the PSTN. If the content
LWC> is originally available "on the Internet" then by definition it
LWC> must be accessible to the PINT Gateway - it has to be transferred
LWC> to the destination fax machine somehow. If the information is
LWC> held on the PSTN, then it's a case of specifying that content and
LWC> where the facsimile is to be sent. The effect is the same, however.

Re. the use of UNSUB from either partner to end the monitoring session:
LWC> There was a discussion of the use of NOTIFY with Expires:0 to
LWC> indicate that the sender (the PINT Gateway that was passing
LWC> status messages "up" to the PINT Client) wanted to close the
LWC> monitoring session.

LWC> My concern was that the Gateway might WELL want to send up
LWC> a status message that reported only transient state (like a "meter
LWC> pulse" or an "errored second") rather than something that has an
LWC> extended duration (like "the call has started"). These NOTIFY
LWC> messages could be indicated by an Expires of 0, with a similar
LWC> interpretation to "Expires:0" or "no-cache" in HTTP.
LWC> Being able to indicate the period of validity of a notification
LWC> seems to be "a good idea" to me; however, this precludes its use
LWC> to terminate a monitoring session.

LWC> The PINT Client terminates the session by sending an UNSUB message
LWC> so having the PINT Gateway do the same seemed a good solution.
LWC> To summarise, use of Call-ID to start a monitoring session, and
LWC> the use of a NOTIFY with Expires:0 is perfectly possible. It even
LWC> reduces the packet traffic for the case where the Entity asking for
LWC> the monitoring session is the one that made the service request in
LWC> the first place. However, this comes at a cost; in the case of
LWC> NOTIFY with Expires:0, there's no easy way to indicate a transient
LWC> status notification, and in the case of using Call-ID to start the
LWC> session, the Gateway must support another method when another UAS
LWC> wants to start a monitoring session (like, for example, a Server
LWC> that monitors corporate call usage).

LWC> This is just a re-iteration of the mailing list posts and drafts of
LWC> the last couple of years; if anyone interprets it differently then
LWC> perhaps we really DO need to expand the descriptions.

Scott's responses (marked SBP):

1. State Machine of SxBSCRIBE/UNSxBSCRIBE

SBP> The typos in the earlier draft obscured the fact that the state-machine
SBP> of SxBSCRIBE/UNSxBSCRIBE is now identical to that of INVITE/BYE. This 
SBP> was a major simplification. Anyone who understands the vanilla INVITE/BYE
SBP> message flow can understand SxBSCRIBE/UNSxBSCRIBE. We added a sentence 
SBP> in the newest draft to make this explicit.

SBP> We also added a sentence to make it clear that a SUBSCRIBE is sent to
SBP> the PINT gateway directly (if that is known from a previous Contact:
SBP> field) or to the server which got the original INVITE (if there was
SBP> no previous Contact: field). 

SBP> The suggestion that one use a NOTIFY with Expires:0 to mean "UNSUBSCRIBE"
SBP> was discussed at length in the mailing list, but the consensus was 
SBP> that one definitely needs an explicit "UNSUBSCRIBE" message. This
SBP> is because any other possibility already has meaning:
SBP> NOTIFY with Expires:0 means that the NOTIFY is only guaranteed to be
SBP> valid this instant (needed to show transient states in the PSTN).
SBP> SUBSCRIBE with Expires:0 means that the sxubscriber wants to get a 
SBP> single NOTIFY and then no more (Needed to allow clients to probe 
SBP> the state of a call once).

SBP> The nice thing about this solution is that SUB/UNSUB has the same state
SBP> machine as INVITE/BYE.

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From: "Thomas Magedanz" <magedanz@fokus.gmd.de>
To: <pint@lists.research.bell-labs.com>, <iptel@lists.research.bell-labs.com>,
        <sigtran@baynetworks.com>, <megaco@baynetworks.com>,
        <tina-in-wg@tinac.com>
Subject: CFP: Computer Networks Special Issue on IN and IP Convergence
Date: Wed, 23 Feb 2000 12:02:15 +0100
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Ladies and Gentlemen!

Computer Networks Journal plans to publish in February 2001 a special
issue on "Voice / Data Integration - A Snapshot of Intelligent Network
and Interent Convergence".

Guest editors: T. Magedanz (IKV++) and M. Smirnov (GMD FOKUS)

Deadline for submission is June 2000!
Maybe a good candidate for disseminating your results!

For more infos look at: http://www.fokus.gmd.de/events/IN-Internet/

Best regards,
Thomas Magedanz (magedanz@ikv.de)
 
IKV++ GmbH, Bernburger Str. 24-25, D-10963 Berlin, Germany



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From owner-pint-outgoing@lists.research.bell-labs.com  Wed Feb 23 10:49:59 2000
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From: "Tom-PT Taylor" <taylor@nortelnetworks.com>
To: wmshen <wmshen@public.wh.hb.cn>, pint@lists.research.bell-labs.com
Subject: RE: question on video transcoder or gateway
Date: Wed, 23 Feb 2000 09:44:10 -0600
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The video experts responsible for the H.261 and H.263 Recommendations are in
ITU-T Study Group 16.  In particular, you may want to address your questions
to the Rapporteur, Gary Sullivan <garysull@microsoft.com>.

> -----Original Message-----
> From:	wmshen [SMTP:wmshen@public.wh.hb.cn]
> Sent:	Tuesday, February 15, 2000 10:08 PM
> To:	pint@lists.research.bell-labs.com
> Subject:	question on video transcoder or gateway
> 
> Hello, all experts,
>  
> I am a Ph.D student working on video communication. I am wondering about
> how the video transcoder/gateway works between H.261 and H.263, and
> between IP network and PSTN or ISDN, in paticular i wonder whether there
> is a method by which bitstreams can be translated directly between H.261
> and H.263 format.
>  
> Who knows the technique details on above topics or where may i get some
> useful reference infomation?
>  
> Any help will be approciated.
>  
>  
> Weiming Shen
>  

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charset=3Diso-8859-1">
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<TITLE>RE: question on video transcoder or gateway</TITLE>
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<BODY>

<P><FONT COLOR=3D"#0000FF" SIZE=3D2 FACE=3D"Arial">The video experts =
responsible for the H.261 and H.263 Recommendations are in ITU-T Study =
Group 16.&nbsp; In particular, you may want to address your questions =
to the Rapporteur, Gary Sullivan =
&lt;garysull@microsoft.com&gt;.</FONT></P>
<UL>
<P><FONT SIZE=3D1 FACE=3D"Arial">-----Original Message-----</FONT>
<BR><B><FONT SIZE=3D1 FACE=3D"Arial">From:&nbsp;&nbsp;</FONT></B> <FONT =
SIZE=3D1 FACE=3D"Arial">wmshen [SMTP:wmshen@public.wh.hb.cn]</FONT>
<BR><B><FONT SIZE=3D1 FACE=3D"Arial">Sent:&nbsp;&nbsp;</FONT></B> <FONT =
SIZE=3D1 FACE=3D"Arial">Tuesday, February 15, 2000 10:08 PM</FONT>
<BR><B><FONT SIZE=3D1 =
FACE=3D"Arial">To:&nbsp;&nbsp;&nbsp;&nbsp;</FONT></B> <FONT SIZE=3D1 =
FACE=3D"Arial">pint@lists.research.bell-labs.com</FONT>
<BR><B><FONT SIZE=3D1 =
FACE=3D"Arial">Subject:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT>=
</B> <FONT SIZE=3D1 FACE=3D"Arial">question on video transcoder or =
gateway</FONT>
</P>

<P><FONT COLOR=3D"#000000" SIZE=3D2 FACE=3D"Times New Roman CE">Hello, =
all experts,</FONT>
<BR><FONT FACE=3D"Courier New">=A0</FONT>
<BR><FONT COLOR=3D"#000000" SIZE=3D2 FACE=3D"Times New Roman CE">I am a =
Ph.D student working on video communication. I am wondering about how =
the video transcoder/gateway works between H.261 and H.263, and between =
IP network and PSTN or ISDN, in paticular i wonder whether there is a =
method by which bitstreams can be translated directly between H.261 and =
H.263 format.</FONT></P>

<P><FONT FACE=3D"Courier New">=A0</FONT>
<BR><FONT COLOR=3D"#000000" SIZE=3D2 FACE=3D"Times New Roman CE">Who =
knows the technique details on above topics or where may i get some =
useful reference infomation?</FONT>
<BR><FONT FACE=3D"Courier New">=A0</FONT>
<BR><FONT COLOR=3D"#000000" SIZE=3D2 FACE=3D"Times New Roman CE">Any =
help will be approciated.</FONT>
<BR><FONT FACE=3D"Courier New">=A0</FONT>
<BR><FONT FACE=3D"Courier New">=A0</FONT>
<BR><FONT COLOR=3D"#000000" SIZE=3D2 FACE=3D"Times New Roman =
CE">Weiming Shen</FONT>
<BR><FONT COLOR=3D"#000000" SIZE=3D2 FACE=3D"Times New Roman =
CE">=A0</FONT>
</P>
</UL>
</BODY>
</HTML>
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From owner-pint-outgoing@lists.research.bell-labs.com  Wed Feb 23 14:29:56 2000
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Subject: New draft-ietf-pint-protocol-04.txt released
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I just submitted a new revision of the pint-protocol, which contains some
small revisions included as a result of further IESG review of the 03
draft. The changes made are as follows:

1. The name "Request to Fax" is now "Request to Fax Content"

2. The name "Request to Hear Content" is now 
	"Request to Speak/Play/Send Content"

3. The MUST in the definition of Request to Fax Content has been changed 
to a MAY. (The draft has such an example itself at the end of section
3.4.2.3).

4.  Some clarifying language about the the SUBSCRIBE/UNSUBSCRIBE state 
machine has been added.


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From owner-pint-outgoing@lists.research.bell-labs.com  Thu Feb 24 06:33:22 2000
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Subject: I-D ACTION:draft-ietf-pint-protocol-04.txt
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--NextPart

A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the PSTN and Internet Internetworking Working Group of the IETF.

	Title		: The PINT Service Protocol:Extensions to SIP and SDP 
                          for IP Access to Telephone Call Services
	Author(s)	: S. Petrack, L. Conroy
	Filename	: draft-ietf-pint-protocol-04.txt
	Pages		: 63
	Date		: 23-Feb-00
	
This document contains the specification of the PINT Service Protocol 1.0, which defines a protocol for invoking certain telephone services from an IP network. These services include placing basic calls, sending and receiving faxes, and receiving content over the telephone. The protocol is specified as a set of enhancements and additions to the SIP 2.0 and SDP protocols.
This document is intended for the PSTN-Internet Interworking (PINT) working group of the Internet Engineering Task Force. Comments are solicited and should be addressed to the working group's mailing list at
pint@lists.research.bell-labs.com and/or the authors.

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-pint-protocol-04.txt

Internet-Drafts are also available by anonymous FTP. Login with the username
"anonymous" and a password of your e-mail address. After logging in,
type "cd internet-drafts" and then
	"get draft-ietf-pint-protocol-04.txt".

A list of Internet-Drafts directories can be found in
http://www.ietf.org/shadow.html 
or ftp://ftp.ietf.org/ietf/1shadow-sites.txt


Internet-Drafts can also be obtained by e-mail.

Send a message to:
	mailserv@ietf.org.
In the body type:
	"FILE /internet-drafts/draft-ietf-pint-protocol-04.txt".
	
NOTE:	The mail server at ietf.org can return the document in
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From owner-pint-outgoing@lists.research.bell-labs.com  Mon Feb 28 14:28:49 2000
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Message-Id: <200002270923.MAA05999@ncc.moc.kw>
Date: 27 Feb 00 12:14:00 +-0300
From: "CA$HFLOWEB" <webmaster@cashfloweb.freeservers.com>
To: <pint@lists.research.bell-labs.com>
Subject: Do You Want to Be a Millionaire?
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Dear ,
 
Have you ever sat in front of your PC and thought that there must be some way to use this powerful piece of technology to make extra money, but didn't have slightest idea how to go about doing it? 
 
Welcome to the world of Mail Order!  Now before you get the idea that this will involve a lot of stamp-licking and trips to the post office, let me say that this business is not like the traditional mail-ordering business.  Instead of a lot of paperwork, your PC will be accomplishing the bulk of the work much faster and easier than if it was done manually.  The total investment for this opportunity is $5.00 (no kidding!) and the cost of five postage stamps.  The rest of the work will be done by your PC, and will only involve a small amount of time behind the keyboard.  But once again, I'd like to ask that you follow the instructions carefully.  The success or failure of this plan depends on the honesty and integrity of its participants.  If the plan is followed to the letter, it cannot fail.
 
go to the following link http://www.cashfloweb.freeservers.com. Once you are there, download the program from the main page and start making money.
 
Best Regards,
CA$HFLOWEB
 


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