Re: [XCON] [Sip] Questions about the status of dual video feature in SIP

[Keith Lantz <klantz at cisco.com>]

Indeed, this is one of several issues being addressed by the newly
created "SIP Parity Group". Here's the announcement of that
group that was just posted yesterday:

> Subject: [imtcmembers]
> Announcing IMTC SIP Parity Activity Group
> Date: Wed, 4 Mar 2009 12:50:19 -0800
> From: "Susan Lowe" <slowe at inventures.com>
> To: "IMTC Members" <imtcmembers at mail.imtc.org>
>
>  
> Announcing SIP Parity AG
> IMTC?s new Activity Group  
> Dear IMTC Member;
> The IMTC recently added a new activity group to the organization, the SIP
> Parity AG.  The group first came together in December 2008 led by
> Matt Collier, IMTC Board Director and SVP Corporate Development at
> LifeSize Communications.  Ashish Goyal has joined Matt as the
> technical co-chair who is also with LifeSize Communications.  
> The two primary goals of this effort are to provide a forum for members
> to 1.) Agree on an overall SIP profile for video with the objective to
> bring it to full feature parity with H.323 video communications, 2.)
> Conduct an interoperability event in Q3/Q4 2009.
> Since the beginning of the year, the group has further defined itself by
> breaking into (3) sub-groups as follows 1.) Security, 2.) Flow
> control/Fast update/Bandwidth negotiations, and 3). Dual video. Each
> sub-group meets via conference call twice a month. 
> The work effort has seen significant contributions from all (20)
> participating companies. There is also a group meeting of all
> participating companies held once a month to review the status of each
> sub-groups work to date. The work effort will culminate in a reference
> architecture that will be submitted to the appropriate standards bodies
> (IETF, ITU) and the scheduling of an interoperability event, target date
> Q3/Q4 2009.
> IMTC companies participating in the group include; Cisco, France Telecom,
> LifeSize Communications, Polycom, TANDBERG, Sony, Canon, Sharp, Aethra,
> Siemens, Avaya, RADVISION and several others. 
>
> If you are interested in this work
> effort, please contact Susan Lowe at
> slowe at inventures.com or Matt
> Collier at
> mcollier at lifesize.com
>
> Best Regards,
>
> Matt Collier
> SVP Corporate Development
> LifeSize Communications
> Visit SIP Parity AG at
>
> http://www.imtc.org/activity_groups/SIP.asp

Regards, 
Keith


At 09:01 AM 2/27/2009, Roni Even wrote:
> Hi, 
> I had an initial document covering H.239 in SIP. The document has
> expired
> but is a starting point
>
> http://internet-drafts.osmirror.nl/draft-even-xcon-pnc-01.txt
>
> As far as I know the IMTC
> (http://www.imtc.org/
> ) has recently started some
> effort to restart this work and get a common solution between the
> different
> vendors with the objective to bring a draft to the IETF.
> You can send an email to Ashish Goyal (agoyal at lifesize.com) asking about
> the
> state of the work.
>
> Regards
> Roni Even
>
> -----Original Message-----
> From: sip-bounces at ietf.org
> [
> mailto:sip-bounces at ietf.org] On Behalf Of Alan
> Johnston
> Sent: Friday, February 27, 2009 6:47 PM
> To: poplarbird
> Cc: sip at ietf.org
> Subject: Re: [Sip] Questions about the status of dual video feature in
> SIP
>
> Hi Yang,
>
> Based on a little reading on H.239, it sounds like it is a conference
> feature set, which would be implemented using SIP, RTP, various SDP 
> extensions for media labeling and grouping, and XCON protocols such as
> BFCP for floor control and possibly CCMP for conference control.
>
> As such, you won't find one document that describes all these protocols,
> and most of the action happens outside of SIP.  If you have trouble
> finding some of these protocols, let me know.
>
> Also, discussion on this would probably be most productive on the XCON
> list.
>
> Thanks,
> Alan
>
>
> poplarbird wrote:
> >
> > Hi All,
> >
> >  
> >
> > I am currently working on the interworking between SIP and
> H323.
> >
> >  
> >
> > I had difficult in finding the status of SIP supporting dual video
> > (e.g. H.239 from a H.323 endpoint).
> >
> > Are there any drafts or standards working on it?
> >
> >  
> >
> > Also with the text chatting in a SIP call, if anyone can give me the
> > RFC number that would be great.
> >
> >  
> >
> > Thanks,
> >
> > Yang
> >
> >
> ------------------------------------------------------------------------
> >
> > _______________________________________________
> > Sip mailing list 
>
> https://www.ietf.org/mailman/listinfo/sip
> > This list is for NEW development of the core SIP Protocol
> > Use sip-implementors at cs.columbia.edu for questions on current
> sip
> > Use sipping at ietf.org for new developments on the application of
> sip
>
> _______________________________________________
> Sip mailing list 
>
> https://www.ietf.org/mailman/listinfo/sip
> This list is for NEW development of the core SIP Protocol
> Use sip-implementors at cs.columbia.edu for questions on current sip
> Use sipping at ietf.org for new developments on the application of
> sip
>
> _______________________________________________
> XCON mailing list
> XCON at ietf.org
> https://www.ietf.org/mailman/listinfo/xcon