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Indicating User Agent Capabilities in the Session Initiation Protocol (SIP) (RFC3840)

IP.com Disclosure Number: IPCOM000030835D
Original Publication Date: 2004-Aug-01
Included in the Prior Art Database: 2004-Aug-28
Document File: 37 page(s) / 81K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

J. Rosenberg: AUTHOR [+3]

Abstract

This specification defines mechanisms by which a Session Initiation Protocol (SIP) user agent can convey its capabilities and characteristics to other user agents and to the registrar for its domain. This information is conveyed as parameters of the Contact header field.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 4% of the total text.

Network Working Group                                       J. Rosenberg

Request for Comments: 3840                                   dynamicsoft

Category: Standards Track                                 H. Schulzrinne

                                                     Columbia University

                                                              P. Kyzivat

                                                           Cisco Systems

                                                             August 2004

                 Indicating User Agent Capabilities in

                 the Session Initiation Protocol (SIP)

Status of this Memo

   This document specifies an Internet standards track protocol for the

   Internet community, and requests discussion and suggestions for

   improvements.  Please refer to the current edition of the "Internet

   Official Protocol Standards" (STD 1) for the standardization state

   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2004).

Abstract

   This specification defines mechanisms by which a Session Initiation

   Protocol (SIP) user agent can convey its capabilities and

   characteristics to other user agents and to the registrar for its

   domain.  This information is conveyed as parameters of the Contact

   header field.

Rosenberg, et al.           Standards Track                     [Page 1]

RFC 3840                    SIP Capabilities                 August 2004

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3

   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  4

   3.  Definitions  . . . . . . . . . . . . . . . . . . . . . . . . .  4

   4.  Usage of the Content Negotiation Framework . . . . . . . . . .  6

   5.  Computing Capabilities . . . . . . . . . . . . . . . . . . . .  7

   6.  Expressing Capabilities in a Registration  . . . . . . . . . . 10

   7.  Indicating Feature Sets in Remote Target URIs  . . . . . . . . 12

   8.  OPTIONS Processing . . . . . . . . . . . . . . . . . . . . . . 13

   9.  Contact Header Field . . . . . . . . . . . . . . . . . . . . . 13

   10. Media Feature Tag Definitions  . . . . . . . . . . . . . . . . 14

       10.1.  Audio . . . . . . . . . . . . . . . . . . . . . . . . . 15

       10.2.  Application . . . . . . . . . . . . . . . . . . . . . . 16

       10.3.  Data. . . . . . . . . . . . . . . . . . . . . . . . . . 16

      ...