RFC 1890 (rfc1890) - Page 1 of 18
RTP Profile for Audio and Video Conferences with Minimal Control
Alternative Format: Original Text Document
Network Working Group Audio-Video Transport Working Group
Request for Comments: 1890 H. Schulzrinne
Category: Standards Track GMD Fokus
January 1996
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.
Abstract
This memo describes a profile 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.
The 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. However, the encoding definitions are
independent of the particular transport mechanism used. 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.
1. Introduction
This profile defines aspects of RTP left unspecified in the RTP
Version 2 protocol definition (RFC 1889). This profile is intended
for the use within audio and video conferences with minimal session
control. In particular, no support for the negotiation of parameters
or membership control is provided. The profile is expected to be
useful in sessions where no negotiation or membership control are
used (e.g., using the static payload types and the membership
indications provided by RTCP), but this profile may also be useful in
conjunction with a higher-level control protocol.
Schulzrinne Standards Track