draft-ietf-mmusic-rfc4566bis-08.txt   draft-ietf-mmusic-rfc4566bis-09.txt 
Network Working Group M. Handley Network Working Group M. Handley
Internet-Draft UCL Internet-Draft UCL
Obsoletes: 4566 (if approved) V. Jacobson Obsoletes: 4566 (if approved) V. Jacobson
Intended status: Standards Track PARC Intended status: Standards Track PARC
Expires: September 12, 2013 C.S. Perkins Expires: March 20, 2014 C. Perkins
University of Glasgow University of Glasgow
A. Begen A. Begen
Cisco Cisco
March 11, 2013 September 16, 2013
SDP: Session Description Protocol SDP: Session Description Protocol
draft-ietf-mmusic-rfc4566bis-08 draft-ietf-mmusic-rfc4566bis-09
Abstract Abstract
This memo defines the Session Description Protocol (SDP). SDP is This memo defines the Session Description Protocol (SDP). SDP is
intended for describing multimedia sessions for the purposes of intended for describing multimedia sessions for the purposes of
session announcement, session invitation, and other forms of session announcement, session invitation, and other forms of
multimedia session initiation. This document obsoletes RFC 4566. multimedia session initiation. This document obsoletes RFC 4566.
Status of This Memo Status of This Memo
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Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://datatracker.ietf.org/drafts/current/. Drafts is at http://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
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."
This Internet-Draft will expire on September 12, 2013. This Internet-Draft will expire on March 20, 2014.
Copyright Notice Copyright Notice
Copyright (c) 2013 IETF Trust and the persons identified as the Copyright (c) 2013 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 Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of (http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
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8.2.6. Network Types ("nettype") . . . . . . . . . . . . . . 39 8.2.6. Network Types ("nettype") . . . . . . . . . . . . . . 39
8.2.7. Address Types ("addrtype") . . . . . . . . . . . . . 40 8.2.7. Address Types ("addrtype") . . . . . . . . . . . . . 40
8.2.8. Registration Procedure . . . . . . . . . . . . . . . 40 8.2.8. Registration Procedure . . . . . . . . . . . . . . . 40
8.3. Encryption Key Access Methods . . . . . . . . . . . . . . 40 8.3. Encryption Key Access Methods . . . . . . . . . . . . . . 40
9. SDP Grammar . . . . . . . . . . . . . . . . . . . . . . . . . 40 9. SDP Grammar . . . . . . . . . . . . . . . . . . . . . . . . . 40
10. Summary of Changes from RFC 4566 . . . . . . . . . . . . . . 46 10. Summary of Changes from RFC 4566 . . . . . . . . . . . . . . 46
11. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 47 11. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 47
12. References . . . . . . . . . . . . . . . . . . . . . . . . . 47 12. References . . . . . . . . . . . . . . . . . . . . . . . . . 47
12.1. Normative References . . . . . . . . . . . . . . . . . . 47 12.1. Normative References . . . . . . . . . . . . . . . . . . 47
12.2. Informative References . . . . . . . . . . . . . . . . . 48 12.2. Informative References . . . . . . . . . . . . . . . . . 48
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 49
1. Introduction 1. Introduction
When initiating multimedia teleconferences, voice-over-IP calls, When initiating multimedia teleconferences, voice-over-IP calls,
streaming video, or other sessions, there is a requirement to convey streaming video, or other sessions, there is a requirement to convey
media details, transport addresses, and other session description media details, transport addresses, and other session description
metadata to the participants. metadata to the participants.
SDP provides a standard representation for such information, SDP provides a standard representation for such information,
irrespective of how that information is transported. SDP is purely a irrespective of how that information is transported. SDP is purely a
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[RFC3890] Westerlund, M., "A Transport Independent Bandwidth [RFC3890] Westerlund, M., "A Transport Independent Bandwidth
Modifier for the Session Description Protocol (SDP)", RFC Modifier for the Session Description Protocol (SDP)", RFC
3890, September 2004. 3890, September 2004.
[RFC5245] Rosenberg, J., "Interactive Connectivity Establishment [RFC5245] Rosenberg, J., "Interactive Connectivity Establishment
(ICE): A Protocol for Network Address Translator (NAT) (ICE): A Protocol for Network Address Translator (NAT)
Traversal for Offer/Answer Protocols", RFC 5245, April Traversal for Offer/Answer Protocols", RFC 5245, April
2010. 2010.
[RFC6544] Rosenberg, J., Keranen, A., Lowekamp, B.B., and A.B. [RFC6544] Rosenberg, J., Keranen, A., Lowekamp, B., and A. Roach,
Roach, "TCP Candidates with Interactive Connectivity "TCP Candidates with Interactive Connectivity
Establishment (ICE)", RFC 6544, March 2012. Establishment (ICE)", RFC 6544, March 2012.
[ITU.H332.1998] [ITU.H332.1998]
International Telecommunication Union, "H.323 extended for International Telecommunication Union, "H.323 extended for
loosely coupled conferences", ITU Recommendation H.332, loosely coupled conferences", ITU Recommendation H.332,
September 1998. September 1998.
[RFC4567] Arkko, J., Lindholm, F., Naslund, M., Norrman, K., and E. [RFC4567] Arkko, J., Lindholm, F., Naslund, M., Norrman, K., and E.
Carrara, "Key Management Extensions for Session Carrara, "Key Management Extensions for Session
Description Protocol (SDP) and Real Time Streaming Description Protocol (SDP) and Real Time Streaming
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