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RTP Payload Format for AMR
draft-fingscheidt-avt-rtp-amr-00

Document Type Expired Internet-Draft (individual)
Expired & archived
Authors Tim Fingscheidt , Bernhard Wimmer
Last updated 2000-07-18
RFC stream (None)
Intended RFC status (None)
Formats
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:

Abstract

This document proposes a real-time transport protocol (RTP) [1] payload format for AMR speech encoded [2] signals. It supports all 8 modes of the AMR speech codec and is as well prepared for future extensions, such as AMR wideband. Mode adaptation and discontinuous transmission (DTX) are supported as well. The proposed payload format allows large flexibility with a minimum of bitrate overhead. One or multiple speech frames can be trans- mitted in a single packet. Redundant transmission of previously transmitted frames (or parts thereof) is possible as well as parity code transmission. With one speech frame per packet the additional parity code transmission allows reconstruction of N previous lost speech frames when N consecutive correct packets are buffered in the receiver. This means a very high robustness while the receiver buffer size can be chosen according to the application. For implementation of this draft, please consider also the requirements of [12].

Authors

Tim Fingscheidt
Bernhard Wimmer

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