Private Header (P-Header) Extensions to the Session Initiation Protocol (SIP) for the 3rd-Generation Partnership Project (3GPP)
draft-drage-sipping-rfc3455bis-03

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Network Working Group                                           K. Drage
Internet-Draft                                            Alcatel-Lucent
Intended status: Informational                               C. Holmberg
Expires: July 12, 2012                                          Ericsson
                                                               R. Jesske
                                                        Deutsche Telekom
                                                         January 9, 2012

Private Header (P-Header) Extensions to the Session Initiation Protocol
        (SIP) for the 3rd-Generation Partnership Project (3GPP)
                   draft-drage-sipping-rfc3455bis-03

Abstract

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

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Table of Contents

   1.  Overall Applicability  . . . . . . . . . . . . . . . . . . . .  5
   2.  Conventions  . . . . . . . . . . . . . . . . . . . . . . . . .  5
   3.  Overview . . . . . . . . . . . . . . . . . . . . . . . . . . .  5
   4.  SIP Private Header Fields  . . . . . . . . . . . . . . . . . .  5
     4.1.  The P-Associated-URI header field  . . . . . . . . . . . .  5
       4.1.1.  Applicability statement for the P-Associated-URI
               header field . . . . . . . . . . . . . . . . . . . . .  6
       4.1.2.  Usage of the P-Associated-URI header field . . . . . .  7
     4.2.  The P-Called-Party-ID header field . . . . . . . . . . . .  8
       4.2.1.  Applicability statement for the P-Called-Party-ID
               header field . . . . . . . . . . . . . . . . . . . . . 12
       4.2.2.  Usage of the P-Called-Party-ID header field  . . . . . 12
     4.3.  The P-Visited-Network-ID header field  . . . . . . . . . . 13
       4.3.1.  Applicability statement for the
               P-Visited-Network-ID header field  . . . . . . . . . . 13
       4.3.2.  Usage of the P-Visited-Network-ID header field . . . . 14
     4.4.  The P-Access-Network-Info header field . . . . . . . . . . 17
       4.4.1.  Applicability Statement for the
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