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RFC 8079
Title: Guidelines for End-to-End Support of
the RTP Control Protocol (RTCP) in
Back-to-Back User Agents (B2BUAs)
Author: L. Miniero, S. Garcia Murillo, V. Pascual
Status: Standards Track
Stream: IETF
Date: February 2017
Mailbox: lorenzo@meetecho.com,
sergio.garcia.murillo@gmail.com,
victor.pascual.avila@oracle.com
Pages: 16
Characters: 41687
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-straw-b2bua-rtcp-17.txt
URL: https://www.rfc-editor.org/info/rfc8079
DOI: 10.17487/RFC8079
SIP Back-to-Back User Agents (B2BUAs) are often designed to also be
on the media path, rather than just to intercept signalling. This
means that B2BUAs often implement an RTP or RTP Control Protocol
(RTCP) stack as well, thus leading to separate multimedia sessions
that the B2BUA correlates and bridges together. If not disciplined,
this behaviour can severely impact the communication experience,
especially when statistics and feedback information contained in RTCP
messages get lost because of mismatches in the reported data.
This document defines the proper behaviour B2BUAs should follow when
acting on both the signalling plane and media plane in order to
preserve the end-to-end functionality of RTCP.
This document is a product of the Sip Traversal Required for Applications to Work Working Group of the IETF.
This is now a Proposed Standard.
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 Official
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