Subject: I-D ACTION:draft-ahmadi-avt-rtp-vmr-wb-00.txt

From: [email-masked]
Date: Mon, 20 Oct 2003 15:43:05 -0400

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

	Title		: Real-Time Transport Protocol (RTP) Payload and File 
			  Storage Formats for the Variable-Rate Multimode 
			  Wideband (VMR-WB) Audio Codec
	Author(s)	: S. Ahmadi
	Filename	: draft-ahmadi-avt-rtp-vmr-wb-00.txt
	Pages		: 40
	Date		: 2003-10-20
	
This document specifies a real-time transport protocol (RTP)
payload format to be used for Variable-Rate Multimode Wideband (VMR-WB)
speech codec. The payload format is designed to be able to   
interoperate with existing VMR-WB transport formats on non-IP
networks. In addition, a file format is specified for transport of
VMR-WB speech data in storage mode applications such as
email. A MIME type registration is included, for VMR-WB, specifying use of both the RTP payload and the storage format.

VMR-WB is a variable-rate multimode wideband speech codec that has a 
number of operating modes, one of which is fully interoperable with AMR-WB (G.722.2) audio codec. Therefore, provisions have been made in 
this draft to facilitate and simplify data packet exchange between VMR-WB and AMR-WB (i.e., RFC 3267) in the interoperable mode with minimal logic interworking function in the transport layer (i.e., a RTP translator).

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