RFC 4788 on Enhancements to RTP Payload Formats for EVRC Family Codecs

A new Request for Comments is now available in online RFC libraries.

        RFC 4788

        Title:      Enhancements to RTP Payload Formats 
                    for EVRC Family Codecs 
        Author:     Q. Xie, R. Kapoor
        Status:     Standards Track
        Date:       January 2007
        Mailbox:    Qiaobing.Xie@Motorola.com, 
                    rkapoor@qualcomm.com
        Pages:      22
        Characters: 42216
        Updates:    RFC3558
        See-Also:   

        I-D Tag:    draft-ietf-avt-compact-bundled-evrc-11.txt

        URL:        http://www.rfc-editor.org/rfc/rfc4788.txt

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]

This document is a product of the Audio/Video Transport
Working Group of the IETF.

This is now a Proposed Standard Protocol.

STANDARDS TRACK: This document specifies an Internet standards track
protocol for the Internet community,and requests discussion and 
suggestions for improvements.Please refer to the current edition of the 
Internet Official Protocol Standards (STD 1) for the standardization 
state and status of this protocol.  Distribution of this memo is 
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