Enhancements to RTP Payload Formats for EVRC Family Codecs
RFC 4788, “Enhancements to RTP Payload Formats for EVRC Family Codecs”, is a Proposed Standard document published in January 2007 by Q. Xie, R. Kapoor. It updates RFC 3558. It has since been updated by RFC 5188. The canonical text is published by the RFC Editor.
Abstract
This document updates the Enhanced Variable Rate Codec (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. Voice over IP (VoIP) applications operating over low bandwidth dial-up and wireless networks require such enhancements for efficient use of the bandwidth. [STANDARDS-TRACK]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 4788 is hosted at rfc-editor.org. Available in TXT,HTML.
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