RFC 3486 (rfc3486) - Page 1 of 12


Compressing the Session Initiation Protocol (SIP)



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Network Working Group                                       G. Camarillo
Request for Comments: 3486                                      Ericsson
Category: Standards Track                                  February 2003


           Compressing 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 (2003).  All Rights Reserved.

Abstract

   This document describes a mechanism to signal that compression is
   desired for one or more Session Initiation Protocol (SIP) messages.
   It also states when it is appropriate to send compressed SIP messages
   to a SIP entity.

Table of Contents

   1.   Introduction ...............................................  2
   2.   Overview of operation ......................................  3
   3.   SigComp implementations for SIP ............................  3
   4.   Sending a Request to a Server ..............................  3
        4.1   Obtaining a SIP or SIPS URI with comp=sigcomp ........  4
   5.   Sending a Response to a Client .............................  5
   6.   Double Record-Routing ......................................  6
   7.   Error Situations ...........................................  6
   8.   Augmented BNF ..............................................  7
   9.   Example ....................................................  7
   10.  Security Considerations .................................... 10
   11.  IANA Considerations ........................................ 10
   12.  Acknowledgements............................................ 10
   13.  Normative References ....................................... 10
   14.  Informative References ..................................... 11
   15.  Author's Address............................................ 11
   16.  Full Copyright Statement.................................... 12






Camarillo                   Standards Track


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