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This draft is a work item of the Multiparty Multimedia Session Control Working Group of the IETF.
Title : SDP Capability Negotiation: Requirements and Review of Existing Work
Author(s) : F. Andreasen
Filename : draft-ietf-mmusic-sdp-capability-negotiation-reqts-01.txt
Pages : 23
Date : 2007-3-6
The Session Description Protocol (SDP) was intended for describing
multimedia sessions for the purposes of session announcement, session
invitation, and other forms of multimedia session initiation. SDP was
not intended to provide capability indication or capability
negotiation, however over the years, SDP has seen widespread adoption
and as a result it has been gradually extended to provide limited
support for these. SDP and its current extensions however do not
have, for example, the ability to negotiate one or more alternative
transport protocols (e.g. RTP profiles) which makes it particularly
difficult to deploy new RTP profiles such as secure RTP and RTP with
RTCP-based feedback. The purpose of this document is to identify a
set of requirements for SDP Capability Negotiation and evaluate
existing work in this area. The document does not provide any
solutions to SDP Capability Negotiation
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