RFC 3047 (rfc3047) - Page 1 of 8
RTP Payload Format for ITU-T Recommendation G
Alternative Format: Original Text Document
Network Working Group P. Luthi
Request for Comments: 3047 PictureTel
Category: Standards Track January 2001
RTP Payload Format for ITU-T Recommendation G.722.1
Status of this Memo
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 unlimited.
Copyright Notice
Copyright (C) The Internet Society (2001). All Rights Reserved.
Abstract
International Telecommunication Union (ITU-T) Recommendation G.722.1
is a wide-band audio codec, which operates at one of two selectable
bit rates, 24kbit/s or 32kbit/s. This document describes the payload
format for including G.722.1 generated bit streams within an RTP
packet. Also included here are the necessary details for the use of
G.722.1 with MIME and SDP.
1. Conventions used in this document
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC-2119 [6].
2. Overview of ITU-T Recommendation G.722.1
G.722.1 is a low complexity coder, it compresses 50Hz - 7kHz audio
signals into one of two bit rates, 24 kbit/s or 32 kbit/s.
The coder may be used for speech, music and other types of audio.
Some of the applications for which this coder is suitable are:
o Real-time communications such as videoconferencing and telephony.
o Streaming audio
o Archival and messaging
Luthi Standards Track