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

Document type: Expired Internet-Draft (individual)
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Last updated: 2012-08-27 (latest revision 2012-02-24)
Intended RFC status: Unknown
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found here:


[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.


Muthu Perumal <>
Parthasarathi Ravindran <>

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