Network WG James Polk
Internet-Draft Subha Dhesikan
Expires: August 18, 2013 Paul Jones
Intended Status: Standards Track (PS) Cisco Systems
Feb 18, 2013
The Session Description Protocol (SDP) 'trafficclass' Attribute
draft-ietf-mmusic-traffic-class-for-sdp-03
Abstract
This document proposes a new Session Description Protocol (SDP)
attribute to identify the traffic class a session is requesting
in its offer/answer exchange.
Status of this Memo
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Polk, et al. Expires Aug 18, 2013 [Page 1]
Internet-Draft SDP trafficclass Attribute Feb 2013
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Traffic Class Framework and Component Definitions . . . . . . 5
3. Traffic Class Attribute Definition . . . . . . . . . . . . . 6
3.1 Categories within the SDP Traffic Class Label . . . . . . 8
3.2 Applications within the SDP Traffic Class Label . . . . . 9
3.3 Adjectives within the SDP Traffic Class Label . . . . . . 9
3.3.1 Qualified Adjectives . . . . . . . . . . . . . . . . . 9
4. Matching Categories with Applications and Adjectives . . . . 11
4.1 Conversational Category Traffic Class . . . . . . . . . . 11
4.2 Multimedia-Conferencing Category Traffic Class . . . . . 12
4.3 Realtime-Interactive Category Traffic Class . . . . . . . 14
4.4 Multimedia-Streaming Category Traffic Class . . . . . . . 15
4.5 Broadcast Category Traffic Class . . . . . . . . . . . . 17
5. Offer/Answer Behavior . . . . . . . . . . . . . . . . . . . . 18
5.1 Offer Behavior . . . . . . . . . . . . . . . . . . . . . 18
5.2 Answer Behavior . . . . . . . . . . . . . . . . . . . . . 19
6. Security considerations . . . . . . . . . . . . . . . . . . . 20
7. IANA considerations . . . . . . . . . . . . . . . . . . . . . 20
8. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . 23
9. References . . . . . . . . . . . . . . . . . . . . . . . . . 24
9.1. Normative References . . . . . . . . . . . . . . . . . 24
9.2. Informative References . . . . . . . . . . . . . . . . 24
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . 25
Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . 25
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC 2119 [RFC2119].
1. Introduction
The Session Description Protocol (SDP) [RFC4566] provides a means
for an offerer to describe the specifics of a session to an
answerer, and for the answerer to respond back with its session
specifics to the offerer. These session specifics include offering
the codec or codecs to choose from, the specific IP address and port
number the offerer wants to receive the RTP stream(s) on/at, the
particulars about the codecs the offerer wants considered or
mandated, and so on.
There are many facets within SDP to determine the Real-time
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