A P-Served-User Header Field Parameter for Originating CDIV session case in Session Initiation Protocol (SIP)
draft-ietf-sipcore-originating-cdiv-parameter-07

Document Type Active Internet-Draft (sipcore WG)
Last updated 2018-11-05
Replaces draft-mohali-sipcore-originating-cdiv-parameter
Stream IETF
Intended RFC status Informational
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Stream WG state Submitted to IESG for Publication
Document shepherd Jean Mahoney
Shepherd write-up Show (last changed 2018-08-29)
IESG IESG state Waiting for AD Go-Ahead
Consensus Boilerplate Yes
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Responsible AD Ben Campbell
Send notices to Jean Mahoney <mahoney@nostrum.com>
IANA IANA review state Version Changed - Review Needed
IANA action state None
SIPCORE Working Group                                          M. Mohali
Internet-Draft                                                    Orange
Updates: 5502 (if approved)                            November 05, 2018
Intended status: Informational
Expires: May 9, 2019

A P-Served-User Header Field Parameter for Originating CDIV session case
                  in Session Initiation Protocol (SIP)
            draft-ietf-sipcore-originating-cdiv-parameter-07

Abstract

   The P-Served-User header field is used to convey the identity of the
   served user and the session case that applies to this particular
   communication session and application invocation.  This document
   updates RFC5502 by defining a new P-Served-User header field
   parameter, "orig-cdiv".  The parameter conveys the session case used
   by a proxy when handling an originating session after Call Diversion
   (CDIV) services have been invoked for the served user.  This document
   also fixes the ABNF in RFC 5502 and provides more guidance for using
   the P-Served-User header field in IP networks.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
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   time.  It is inappropriate to use Internet-Drafts as reference
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   This Internet-Draft will expire on May 9, 2019.

Copyright Notice

   Copyright (c) 2018 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of

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   publication of this document.  Please review these documents
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   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
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   than English.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  General . . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.2.  Basic Use Case  . . . . . . . . . . . . . . . . . . . . .   3
     1.3.  Problem Statement . . . . . . . . . . . . . . . . . . . .   4
   2.  Conventions and Terminology . . . . . . . . . . . . . . . . .   5
   3.  Applicability . . . . . . . . . . . . . . . . . . . . . . . .   5
   4.  Proxy behavior and parameter handling . . . . . . . . . . . .   5
   5.  Clarification of RFC5502 procedures . . . . . . . . . . . . .   6
   6.  Syntax  . . . . . . . . . . . . . . . . . . . . . . . . . . .   7
     6.1.  General . . . . . . . . . . . . . . . . . . . . . . . . .   7
     6.2.  ABNF  . . . . . . . . . . . . . . . . . . . . . . . . . .   7
   7.  Call Flow Examples  . . . . . . . . . . . . . . . . . . . . .   8
     7.1.  Call diversion case . . . . . . . . . . . . . . . . . . .   8
     7.2.  Call diversion and privacy  . . . . . . . . . . . . . . .  10
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  12
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  12
   10. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  13
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  13
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  13
     11.2.  Informative References . . . . . . . . . . . . . . . . .  14
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  14

1.  Introduction

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