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-----Original Message----- From: rfc-editor@rfc-editor.org [mailto:rfc-editor@rfc-editor.org] Sent: 05 November 2003 20:05 Cc: rfc-editor@rfc-editor.org; avt@ietf.org Subject: [AVT] RFC 3611 on RTP Control Protocol Extended Reports (RTCP XR)

A new Request for Comments is now available in online RFC libraries.

RFC 3611

Title: RTP Control Protocol Extended Reports (RTCP XR) Author(s): T. Friedman, R. Caceres, A. Clark, Eds. Status: Standards Track Date: November 2003 Mailbox: timur.friedman@lip6.fr, caceres@watson.ibm.com, alan@telchemy.com Pages: 55 Characters: 126736 Updates/Obsoletes/SeeAlso: None

I-D Tag: draft-ietf-avt-rtcp-report-extns-06.txt

URL: ftp://ftp.rfc-editor.org/in-notes/rfc3611.txt

This document defines the Extended Report (XR) packet type for the RTP Control Protocol (RTCP), and defines how the use of XR packets can be signaled by an application if it employs the Session Description Protocol (SDP). XR packets are composed of report blocks, and seven block types are defined here. The purpose of the extended reporting format is to convey information that supplements the six statistics that are contained in the report blocks used by RTCP's Sender Report (SR) and Receiver Report (RR) packets. Some applications, such as multicast inference of network characteristics (MINC) or voice over IP (VoIP) monitoring, require other and more detailed statistics. In addition to the block types defined here, additional block types may be defined in the future by adhering to the framework that this document provides.

This document is a product of the Audio/Video Transport Working Group of the IETF.

This is now a Proposed Standard Protocol.

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.

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Joyce K. Reynolds and Sandy Ginoza USC/Information Sciences Institute

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