RTP Payload Format for Enhanced Variable Rate Codecs and Selectable Mode Vocoders
RFC 3558, “RTP Payload Format for Enhanced Variable Rate Codecs and Selectable Mode Vocoders”, is a Proposed Standard document published in July 2003 by A. Li. It has since been updated by RFC 4788. The canonical text is published by the RFC Editor.
Abstract
This document describes the RTP payload format for Enhanced Variable Rate Codec (EVRC) Speech and Selectable Mode Vocoder (SMV) Speech. Two sub-formats are specified for different application scenarios. A bundled/interleaved format is included to reduce the effect of packet loss on speech quality and amortize the overhead of the RTP header over more than one speech frame. A non-bundled format is also supported for conversational applications. [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 3558 is hosted at rfc-editor.org. Available in TXT,HTML.
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