Offer/Answer Considerations for G.723 Annex A and G.729 Annex B

Document Type Replaced Internet-Draft (mmusic WG)
Authors Muthu Perumal  , Parthasarathi Ravindran 
Last updated 2012-11-27 (latest revision 2012-10-15)
Replaced by RFC 7261
Stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
pdf htmlized bibtex
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state Replaced by draft-ietf-mmusic-sdp-g723-g729
Consensus Boilerplate Unknown
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Responsible AD (None)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


[RFC4856] describes the annexa parameter for G723 and the annexb parameter for G729, G729D and G729E. However, the specification does not describe the offerer and answerer behavior when the value of the annexa or annexb parameter does not match in the SDP offer and answer. This document provides the offer/answer considerations for these parameters and updates [RFC4856].


Muthu Perumal (
Parthasarathi Ravindran (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)