RFC 3455 (rfc3455) - Page 1 of 34


Private Header (P-Header) Extensions to the Session Initiation Protocol (SIP) for the 3rd-Generation Partnership Project (3GPP)



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Network Working Group                                   M. Garcia-Martin
Request for Comments: 3455                                      Ericsson
Category: Informational                                     E. Henrikson
                                                                  Lucent
                                                                D. Mills
                                                                Vodafone
                                                            January 2003


     Private Header (P-Header) Extensions to the Session Initiation
    Protocol (SIP) for the 3rd-Generation Partnership Project (3GPP)

Status of this Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2003).  All Rights Reserved.

Abstract

   This document describes a set of private Session Initiation Protocol
   (SIP) headers (P-headers) used by the 3rd-Generation Partnership
   Project (3GPP), along with their applicability, which is limited to
   particular environments.  The P-headers are for a variety of purposes
   within the networks that the partners use, including charging and
   information about the networks a call traverses.

Table of Contents

   1. Overall Applicability . . . . . . . . . . . . . . . . . . . .  3
   2. Conventions . . . . . . . . . . . . . . . . . . . . . . . . .  3
   3. Overview . . . .  . . . . . . . . . . . . . . . . . . . . . .  3
   4. SIP Private Headers . . . . . . . . . . . . . . . . . . . . .  3
     4.1 The P-Associated-URI header. . . . . . . . . . . . . . . .  3
         4.1.1 Applicability statement for the
               P-Associated-URI header. . . . . . . . . . . . . . .  4
         4.1.2 Usage of the P-Associated-URI header . . . . . . . .  4
     4.2 The P-Called-Party-ID header . . . . . . . . . . . . . . .  6
         4.2.1 Applicability statement for the
              P-Called-Party-ID header. . . . . . . . . . . . . . .  9
         4.2.2 Usage of the P-Called-Party-ID header. . . . . . . . 10
     4.3 The P-Visited-Network-ID header. . . . . . . . . . . . . . 11
         4.3.1 Applicability statement for the
               P-Visited-Network-ID header. . . . . . . . . . . . . 11



Garcia-Martin, et. al.       Informational


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