Browse Prior Art Database

RTP Topologies (RFC5117)

IP.com Disclosure Number: IPCOM000167198D
Original Publication Date: 2008-Jan-01
Included in the Prior Art Database: 2008-Feb-02
Document File: 22 page(s) / 50K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

M. Westerlund: AUTHOR [+2]

Abstract

This document discusses multi-endpoint topologies used in Real-time Transport Protocol (RTP)-based environments. In particular, centralized topologies commonly employed in the video conferencing industry are mapped to the RTP terminology.

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Network Working Group                                      M. Westerlund Request for Comments: 5117                                      Ericsson Category: Informational                                        S. Wenger                                                                    Nokia                                                             January 2008

                              RTP Topologies

Status of This Memo

   This memo provides information for the Internet community.  It does    not specify an Internet standard of any kind.  Distribution of this    memo is unlimited.

Abstract

   This document discusses multi-endpoint topologies used in Real-time    Transport Protocol (RTP)-based environments.  In particular,    centralized topologies commonly employed in the video conferencing    industry are mapped to the RTP terminology.

 Westerlund & Wenger          Informational                      [Page 1]
 RFC 5117                     RTP Topologies                 January 2008

 Table of Contents

   1. Introduction ....................................................2

   2. Definitions .....................................................3

      2.1. Glossary ...................................................3

      2.2. Indicating Requirement Levels ..............................3

   3. Topologies ......................................................3

      3.1. Point to Point .............................................4

      3.2. Point to Multipoint Using Multicast ........................5

      3.3. Point to Multipoint Using the RFC 3550 Translator ..........6

      3.4. Point to Multipoint Using the RFC 3550 Mixer Model .........9

      3.5. Point to Multipoint Using Video Switching MCUs ............11

      3.6. Point to Multipoint Using RTCP-Terminating MCU ............12

      3.7. Non-Symmetric Mixer/Translators ...........................13

      3.8. Combining Topologies ......................................14

   4. Comparing Topologies ...........................................15

      4.1. Topology Properties .......................................15

           4.1.1. All to All Media Transmission ......................15

           4.1.2. Transport or Media Interoperability ................16

           4.1.3. Per Domain Bit-Rate Adaptation .....................16

           4.1.4. Aggregation of Media ...............................16

           4.1.5. View of All Session Participants .................