draft-ietf-mmusic-sdp-mux-attributes-07.txt   draft-ietf-mmusic-sdp-mux-attributes-08.txt 
Network Working Group S. Nandakumar Network Working Group S. Nandakumar
Internet-Draft Cisco Internet-Draft Cisco
Intended status: Standards Track January 16, 2015 Intended status: Standards Track January 20, 2015
Expires: July 20, 2015 Expires: July 24, 2015
A Framework for SDP Attributes when Multiplexing A Framework for SDP Attributes when Multiplexing
draft-ietf-mmusic-sdp-mux-attributes-07 draft-ietf-mmusic-sdp-mux-attributes-08
Abstract Abstract
The Session Description Protocol (SDP) provides mechanisms to The Session Description Protocol (SDP) provides mechanisms to
describe attributes of multimedia sessions and of individual media describe attributes of multimedia sessions and of individual media
streams (e.g., Real-time Transport Protocol (RTP) sessions) within a streams (e.g., Real-time Transport Protocol (RTP) sessions) within a
multimedia session. Typically media associated with individual media multimedia session. Typically media associated with individual media
descriptions ("m=" lines) represent seperate RTP Sessions and thus descriptions ("m=" lines) represent seperate RTP Sessions and are
carried over individual underlying transport layer flows. For thus carried over individual underlying transport layer flows. For
scenarios where SDP is used to negotiate the usage of single 5-tuple scenarios where SDP is used to negotiate the usage of single 5-tuple
for sending and receiving media associated with multiple media for sending and receiving media associated with multiple media
descriptions, it is required to understand the semantic implications descriptions, it is required to understand the semantic implications
of the SDP attributes associated with the RTP Media Streams of the SDP attributes associated with the RTP Media Streams
multiplexed over a single underlying transport layer flow. multiplexed over a single underlying transport layer flow.
The purpose of this specification is to provide a framework for The purpose of this specification is to provide a framework for
analyzing the multiplexing characteristics of SDP attributes. This analyzing the multiplexing characteristics of SDP attributes. This
specification also categorizes the existing SDP attributes based on specification also categorizes the existing SDP attributes based on
the framework described herein. the framework described herein.
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This Internet-Draft will expire on July 20, 2015. This Internet-Draft will expire on July 24, 2015.
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