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

["Roni Even" <ron.even.tlv at gmail.com>]

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
>
> ------------------------------------------------------------------------
>
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_______________________________________________
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