Enhancements to RTP Payload Formats for EVRC Family Codecs
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From: The IESG <email@example.com> To: IETF-Announce <firstname.lastname@example.org> Cc: Internet Architecture Board <email@example.com>, RFC Editor <firstname.lastname@example.org>, avt mailing list <email@example.com>, avt chair <firstname.lastname@example.org> Subject: Protocol Action: 'Enhancements to RTP Payload Formats for EVRC Family Codecs' to Proposed Standard The IESG has approved the following document: - 'Enhancements to RTP Payload Formats for EVRC Family Codecs ' <draft-ietf-avt-compact-bundled-evrc-12.txt> as a Proposed Standard This document is the product of the Audio/Video Transport Working Group. The IESG contact persons are Cullen Jennings and Jon Peterson. A URL of this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-avt-compact-bundled-evrc-12.txt
* Technical Summary This document updates the EVRC RTP payload formats defined in RFC 3558 with several enhancements and extensions. In particular, it defines support for the header-free and interleaved/bundled packet formats for the EVRC-B codec, a new compact bundled format for the EVRC and EVRC-B codecs, as well as discontinuous transmission (DTX) support for EVRC and EVRC-B encoded speech transported via RTP. VoIP applications operating over low bandwidth dial-up and wireless networks require such enhancements for efficient use of the bandwidth. * Working Group Summary A straight-forward RTP Payload Format, to address a new version of the codec. Only unusual feature is the tight specification of the DTX parameters, rather than relying on end-point discretion (as is the norm). * Protocol Quality This drafts was reviewed on the ietf-types list in May 2006; there were no objections. Adam Li provided working group last call comments on DTX operation. Colin Perkins did the PROTO write-up. David Black did Gen ART Review.