draft-ietf-avt-rtcp-xr-loss-conceal-01.txt   draft-ietf-avt-rtcp-xr-loss-conceal-02.txt 
Audio/Video Transport Working G. Hunt Audio/Video Transport Working G. Hunt
Group BT Group BT
Internet-Draft A. Clark Internet-Draft A. Clark
Intended status: Standards Track Telchemy Intended status: Standards Track Telchemy
Expires: August 29, 2009 February 25, 2009 Expires: November 16, 2009 May 15, 2009
RTCP XR Report Block for Loss Concealment metric Reporting RTCP XR Report Block for Loss Concealment metric Reporting
draft-ietf-avt-rtcp-xr-loss-conceal-01.txt draft-ietf-avt-rtcp-xr-loss-conceal-02.txt
Status of this Memo Status of this Memo
This Internet-Draft is submitted to IETF in full conformance with the This Internet-Draft is submitted to IETF in full conformance with the
provisions of BCP 78 and BCP 79. provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF), its areas, and its working groups. Note that Task Force (IETF), its areas, and its working groups. Note that
other groups may also distribute working documents as Internet- other groups may also distribute working documents as Internet-
Drafts. Drafts.
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and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
The list of current Internet-Drafts can be accessed at The list of current Internet-Drafts can be accessed at
http://www.ietf.org/ietf/1id-abstracts.txt. http://www.ietf.org/ietf/1id-abstracts.txt.
The list of Internet-Draft Shadow Directories can be accessed at The list of Internet-Draft Shadow Directories can be accessed at
http://www.ietf.org/shadow.html. http://www.ietf.org/shadow.html.
This Internet-Draft will expire on August 29, 2009. This Internet-Draft will expire on November 16, 2009.
Copyright Notice Copyright Notice
Copyright (c) 2009 IETF Trust and the persons identified as the Copyright (c) 2009 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents in effect on the date of Provisions Relating to IETF Documents in effect on the date of
publication of this document (http://trustee.ietf.org/license-info). publication of this document (http://trustee.ietf.org/license-info).
Please review these documents carefully, as they describe your rights Please review these documents carefully, as they describe your rights
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without prior signaling. without prior signaling.
This section augments the SDP [RFC4566] attribute "rtcp-xr" defined This section augments the SDP [RFC4566] attribute "rtcp-xr" defined
in [RFC3611] by providing an additional value of "xr-format" to in [RFC3611] by providing an additional value of "xr-format" to
signal the use of the report block defined in this document. signal the use of the report block defined in this document.
rtcp-xr-attrib = "a=" "rtcp-xr" ":" [xr-format *(SP xr-format)] CRLF rtcp-xr-attrib = "a=" "rtcp-xr" ":" [xr-format *(SP xr-format)] CRLF
(defined in [RFC3611]) (defined in [RFC3611])
xr-format = xr-format / xr-conceal-block xr-format =/ xr-conceal-block
xr-conceal-block = "loss-conceal" xr-conceal-block = "loss-conceal"
4. IANA Considerations 4. IANA Considerations
New block types for RTCP XR are subject to IANA registration. For New block types for RTCP XR are subject to IANA registration. For
general guidelines on IANA considerations for RTCP XR, refer to general guidelines on IANA considerations for RTCP XR, refer to
[RFC3611]. [RFC3611].
4.1. New RTCP XR Block Type value 4.1. New RTCP XR Block Type value
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The authors gratefully acknowledge the comments and contributions The authors gratefully acknowledge the comments and contributions
made by Bruce Adams, Philip Arden, Amit Arora, Bob Biskner, Kevin made by Bruce Adams, Philip Arden, Amit Arora, Bob Biskner, Kevin
Connor, Claus Dahm, Randy Ethier, Roni Even, Jim Frauenthal, Albert Connor, Claus Dahm, Randy Ethier, Roni Even, Jim Frauenthal, Albert
Higashi, Tom Hock, Shane Holthaus, Paul Jones, Rajesh Kumar, Keith Higashi, Tom Hock, Shane Holthaus, Paul Jones, Rajesh Kumar, Keith
Lantz, Mohamed Mostafa, Amy Pendleton, Colin Perkins, Mike Ramalho, Lantz, Mohamed Mostafa, Amy Pendleton, Colin Perkins, Mike Ramalho,
Ravi Raviraj, Albrecht Schwarz, Tom Taylor, and Hideaki Yamada. Ravi Raviraj, Albrecht Schwarz, Tom Taylor, and Hideaki Yamada.
7. Changes from previous version 7. Changes from previous version
Expanded and clarified IANA Considerations section Changed BNF for SDP following Christian Groves' and Tom Taylor's
comments (4th and 5th May 2009), now aligned with RFC 5234 section
3.3 "Incremental Alternatives".
Changed SDP tag for block to "loss-conceal" Updated references
8. References 8. References
8.1. Normative References 8.1. Normative References
[MEASIDENT] [MEASIDENT]
Hunt, G., "RTCP XR Measurement Identifier Block", Hunt, G., "RTCP XR Measurement Identifier Block",
ID draft-ietf-avt-rtcp-xr-measid-01, February 2009. ID draft-ietf-avt-rtcp-xr-meas-identity-02, May 2009.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", RFC 2119, BCP 14, March 1997. Requirement Levels", RFC 2119, BCP 14, March 1997.
[RFC3550] Schulzrinne, H., "RTP: A Transport Protocol for Real-Time [RFC3550] Schulzrinne, H., "RTP: A Transport Protocol for Real-Time
Applications", RFC 3550, July 2003. Applications", RFC 3550, July 2003.
[RFC3611] Friedman, T., "RTP Control Protocol Extended Reports (RTCP [RFC3611] Friedman, T., "RTP Control Protocol Extended Reports (RTCP
XR)", RFC 3611, November 2003. XR)", RFC 3611, November 2003.
[RFC4566] Handley, M., "SDP: Session Description Protocol", [RFC4566] Handley, M., "SDP: Session Description Protocol",
RFC 4566, July 2006. RFC 4566, July 2006.
8.2. Informative References 8.2. Informative References
[MONARCH] Hunt, G., "Monitoring Architectures for RTP", [MONARCH] Hunt, G., "Monitoring Architectures for RTP",
ID draft-hunt-avt-monarch-01, August 2008. ID draft-hunt-avt-monarch-01, August 2008.
[PMOLFRAME] [PMOLFRAME]
Clark, A., "Framework for Performance Metric Development", Clark, A., "Framework for Performance Metric Development",
ID draft-ietf-pmol-metrics-framework-00, July 2008. ID draft-ietf-pmol-metrics-framework-02, March 2009.
Authors' Addresses Authors' Addresses
Geoff Hunt Geoff Hunt
BT BT
Orion 2 PP3 Orion 2 PP3
Adastral Park Adastral Park
Martlesham Heath Martlesham Heath
Ipswich, Suffolk IP5 3RE Ipswich, Suffolk IP5 3RE
United Kingdom United Kingdom
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