draft-ietf-dccp-rtp-02.txt   draft-ietf-dccp-rtp-03.txt 
Network Working Group C. Perkins Network Working Group C. Perkins
Internet-Draft University of Glasgow Internet-Draft University of Glasgow
Intended status: Standards Track November 16, 2006 Intended status: Standards Track November 22, 2006
Expires: May 20, 2007 Expires: May 26, 2007
RTP and the Datagram Congestion Control Protocol (DCCP) RTP and the Datagram Congestion Control Protocol (DCCP)
draft-ietf-dccp-rtp-02.txt draft-ietf-dccp-rtp-03.txt
Status of this Memo Status of this Memo
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This Internet-Draft will expire on May 20, 2007. This Internet-Draft will expire on May 26, 2007.
Copyright Notice Copyright Notice
Copyright (C) The Internet Society (2006). Copyright (C) The Internet Society (2006).
Abstract Abstract
The Real-time Transport Protocol (RTP) is a widely used transport for The Real-time Transport Protocol (RTP) is a widely used transport for
real-time multimedia on IP networks. The Datagram Congestion Control real-time multimedia on IP networks. The Datagram Congestion Control
Protocol (DCCP) is a newly defined transport protocol that provides Protocol (DCCP) is a newly defined transport protocol that provides
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dccp-service-attr = %x61 "=dccp-service-code:" service-code dccp-service-attr = %x61 "=dccp-service-code:" service-code
service-code = hex-sc / decimal-sc / ascii-sc service-code = hex-sc / decimal-sc / ascii-sc
hex-sc = %x53 %x43 "=" %x78 *HEXDIG hex-sc = %x53 %x43 "=" %x78 *HEXDIG
decimal-sc = %x53 %x43 "=" *DIGIT decimal-sc = %x53 %x43 "=" *DIGIT
ascii-sc = %x53 %x43 ":" *sc-char ascii-sc = %x53 %x43 ":" *sc-char
sc-char = %d42-43, %d45-47, %d63-90, %d95, %d97-122 sc-char = %d42-43 / %d45-47 / %d63-90 / %d95 / %d97-122
where DIGIT and HEXDIG are as defined in [15]. The service code where DIGIT and HEXDIG are as defined in [15]. The service code
should be interpreted as defined in Section 8.1.2 of [2]. The should be interpreted as defined in Section 8.1.2 of [2]. The
following DCCP service codes are registered for use with RTP: following DCCP service codes are registered for use with RTP:
o SC:RTPA an RTP session conveying audio data and associated RTCP o SC:RTPA an RTP session conveying audio data and associated RTCP
o SC:RTPV an RTP session conveying video data and associated RTCP o SC:RTPV an RTP session conveying video data and associated RTCP
o SC:RTPT an RTP session conveying text media and associated RTCP o SC:RTPT an RTP session conveying text media and associated RTCP
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DCCP ports 5004 ("DCCP RTP") and 5005 ("DCCP RTCP") are registered DCCP ports 5004 ("DCCP RTP") and 5005 ("DCCP RTCP") are registered
for use as default RTP/RTCP ports (see Section 5.1 of this memo). for use as default RTP/RTCP ports (see Section 5.1 of this memo).
The four services codes listed above are to be associated with these The four services codes listed above are to be associated with these
ports. ports.
8. Acknowledgements 8. Acknowledgements
This work was supported in part by the UK Engineering and Physical This work was supported in part by the UK Engineering and Physical
Sciences Research Council. Thanks are due to to Philippe Gentric, Sciences Research Council. Thanks are due to to Philippe Gentric,
Magnus Westerlund, Sally Floyd, Dan Wing, Gorry Fairhurst, and the Magnus Westerlund, Sally Floyd, Dan Wing, Gorry Fairhurst, Stephane
other members of the DCCP working group for their comments. Bortzmeyer and the other members of the DCCP working group for their
comments.
9. References 9. References
9.1. Normative References 9.1. Normative References
[1] Schulzrinne, H., Casner, S., Frederick, R., and V. Jacobson, [1] Schulzrinne, H., Casner, S., Frederick, R., and V. Jacobson,
"RTP: A Transport Protocol for Real-Time Applications", STD 64, "RTP: A Transport Protocol for Real-Time Applications", STD 64,
RFC 3550, July 2003. RFC 3550, July 2003.
[2] Kohler, E., Handley, M., and S. Floyd, "Datagram Congestion [2] Kohler, E., Handley, M., and S. Floyd, "Datagram Congestion
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