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RTP Profile for Audio and Video Conferences with Minimal Control (RFC3551)

IP.com Disclosure Number: IPCOM000018626D
Original Publication Date: 2003-Jul-01
Included in the Prior Art Database: 2003-Jul-29

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

H. Schulzrinne: AUTHOR [+2]

Abstract

This document describes a profile called "RTP/AVP" for the use of the real-time transport protocol (RTP), version 2, and the associated control protocol, RTCP, within audio and video multiparticipant conferences with minimal control. It provides interpretations of generic fields within the RTP specification suitable for audio and video conferences. In particular, this document defines a set of default mappings from payload type numbers to encodings.

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Network Working Group� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � H. Schulzrinne

Request for Comments: 3551� � � � � � � � � � � � � � � � � � � � � � � � � � Columbia University

Obsoletes: 1890� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � S. Casner

Category: Standards Track� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � Packet Design

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � July 2003

� � � � � � � � � � � � � RTP Profile for Audio and Video Conferences

� � � � � � � � � � � � � � � � � � � � � � � � � with Minimal Control

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 (2003).� All Rights Reserved.

Abstract

� � This document describes a profile called "RTP/AVP" for the use of the

� � real-time transport protocol (RTP), version 2, and the associated

� � control protocol, RTCP, within audio and video multiparticipant

� � conferences with minimal control.� It provides interpretations of

� � generic fields within the RTP specification suitable for audio and

� � video conferences.� In particular, this document defines a set of

� � default mappings from payload type numbers to encodings.

� � This document also describes how audio and video data may be carried

� � within RTP.� It defines a set of standard encodings and their names

� � when used within RTP.� The descriptions provide pointers to reference

� � implementations and the detailed standards.� This document is meant

� � as an aid for implementors of audio, video and other real-time

� � multimedia applications.

� � This memorandum obsoletes RFC 1890.� It is mostly backwards-

� � compatible except for functions removed because two interoperable

� � implementations were not found.� The additions to RFC 1890 codify

� � existing practice in the use of payload formats under this profile

� � and include new payload formats defined since RFC 1890 was published.

Schulzrinne & Casner� � � � � � � Standards Track� � � � � � � � � � � � � � � � � � � � [Page 1]

RFC 3551� � � � � � � � � � � � � � � � � � � RTP A/V Profile� � � � � � � � � � � � � � � � � � � July 2003

Table of Contents

� � 1.� Introduction .................................................� 3

� � � � � � 1.1� Terminology .............................................� 3

� � 2.� RTP and RTCP Packet Forms and Protocol Behavior ..............� 4

� � 3.� Registering Additional Encodings .............................� 6

� � 4.� Audio ........................................................�...