Re: [Sip] media coder negociation
Jonathan Rosenberg <jdrosen@dynamicsoft.com> Wed, 20 March 2002 17:04 UTC
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Date: Wed, 20 Mar 2002 11:47:25 -0500
From: Jonathan Rosenberg <jdrosen@dynamicsoft.com>
Organization: dynamicsoft
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To: Guntram Diehl <gdiehl@innovaphone.com>
CC: "'sip@ietf.org'" <sip@ietf.org>
Subject: Re: [Sip] media coder negociation
References: <1921644655FE154BB2381C086C4FD8E305187E@kaula.innovaphone.int>
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The offer/answer model of SDP allows for an agreeement on the set of codecs that are used in the session. Please see: http://www.ietf.org/internet-drafts/draft-ietf-mmusic-sdp-offer-answer-02.txt -Jonathan R. Guntram Diehl wrote: > > Hi, > > can anybody tell me if there is already any work concerning media coder > negociation within sip in progress? > > There seems to be a need for this for several reasons: > > - SIP - H.323 interworking > - RSVP: You have to make reservations with RSVP as receiver of the media > stream. How can you make reservations if you don't know which one of the > different sessions you annouce via SDP is used by the other side. > - Most of the available DSP software for coders support symmetric coders > only. > > Guntram > > _______________________________________________ > Sip mailing list https://www1.ietf.org/mailman/listinfo/sip > This list is for NEW development of the core SIP Protocol > Use sip-implementors@cs.columbia.edu for questions on current sip > Use sipping@ietf.org for new developments on the application of sip -- Jonathan D. Rosenberg, Ph.D. 72 Eagle Rock Avenue Chief Scientist First Floor dynamicsoft East Hanover, NJ 07936 jdrosen@dynamicsoft.com FAX: (973) 952-5050 http://www.jdrosen.net PH: (973) 952-5000 http://www.dynamicsoft.com _______________________________________________ Sip mailing list https://www1.ietf.org/mailman/listinfo/sip This list is for NEW development of the core SIP Protocol Use sip-implementors@cs.columbia.edu for questions on current sip Use sipping@ietf.org for new developments on the application of sip
- [Sip] media coder negociation Guntram Diehl
- Re: [Sip] media coder negociation Jonathan Rosenberg