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I-D ACTION:draft-barany-avt-efr-00.txt



A New Internet-Draft is available from the on-line Internet-Drafts directories.


	Title		: RTP payload format for EFR speech codec
	Author(s)	: P. Barany, W. Navarro
	Filename	: draft-barany-avt-efr-00.txt
	Pages		: 8
	Date		: 08-Nov-01
	
This document specifies a Real-Time Transport Protocol (RTP) payload 
format for the Global System for Mobile communications (GSM) Enhanced 
Full Rate (EFR) speech codec. The EFR speech codec RTP payload format 
specified in this document closely resembles the EFR speech codec RTP 
payload format defined in TS 101 318 'Using GSM Speech Codecs Within 
ITU-T Recommendation H.323'. It is designed specifically to optimally 
interoperate with existing (i.e., legacy) GSM circuit-switched 
transceiver equipment in the sense that it supports the following 
EFR speech codec circuit-switched domain functionality in the packet- 
switched domain: error concealment of lost speech frames and SIlence 
Descriptor (SID) frames. The EFR speech codec RTP payload format 
defined in TS 101 318 does not support this functionality. A MIME 
type registration for the EFR speech codec is also included.

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