G.729.1 RTP Payload Format update: DTX support

Document Type Replaced Internet-Draft (individual)
Last updated 2009-02-24 (latest revision 2008-01-21)
Replaced by draft-ietf-avt-rfc4749-dtx-update
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document updates the Real-time Transport Protocol (RTP) payload format to be used for the International Telecommunication Union (ITU-T) G.729.1 audio codec. It adds Discontinuous Transmission (DTX) support to the RFC 4749 specification, in a backward-compatible way. An updated media type registration is included for this payload format.


Aurelien Sollaud (aurelien.sollaud@francetelecom.com)

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