Interworking ISDN Call Control User Information with SIP
draft-ietf-cuss-sip-uui-isdn-10

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Document Type Active Internet-Draft (cuss WG)
Last updated 2014-10-24
Replaces draft-drage-cuss-sip-uui-isdn
Stream IETF
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CUSS                                                       K. Drage, Ed.
Internet-Draft                                            Alcatel-Lucent
Intended status: Standards Track                             A. Johnston
Expires: April 27, 2015                                            Avaya
                                                        October 24, 2014

        Interworking ISDN Call Control User Information with SIP
                    draft-ietf-cuss-sip-uui-isdn-10

Abstract

   The motivation and use cases for interworking and transporting ITU-T
   DSS1 User to User information element data in SIP are described in
   RFC 6567.  As networks move to SIP, it is important that applications
   requiring this data can continue to function in SIP networks as well
   as the ability to interwork with this ISDN service for end-to-end
   transparency.  This document defines a usage (a new package) of the
   User-to-User header field to enable interworking with this ISDN
   service.

   This document covers the interworking with both public ISDN and
   private ISDN capabilities, so the potential interworking with QSIG
   will also be addressed.

   The package is identified by a new value "isdn-uui" of the "purpose"
   header field parameter.

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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   This Internet-Draft will expire on April 27, 2015.

Copyright Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the

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   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
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   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Overview . . . . . . . . . . . . . . . . . . . . . . . . . . .  3
   3.  Summary of the ISDN User to User Service . . . . . . . . . . .  3
     3.1.  The service  . . . . . . . . . . . . . . . . . . . . . . .  3
     3.2.  Impacts of the ISDN service on SIP operation . . . . . . .  5
   4.  Relation to SIP-T  . . . . . . . . . . . . . . . . . . . . . .  6
   5.  Transition away from ISDN  . . . . . . . . . . . . . . . . . .  6
   6.  ISDN Usage of the User-to-User Header Field  . . . . . . . . .  7
   7.  UAC requirements . . . . . . . . . . . . . . . . . . . . . . .  8
   8.  UAS requirements . . . . . . . . . . . . . . . . . . . . . . .  9
   9.  UUI contents . . . . . . . . . . . . . . . . . . . . . . . . . 10
   10. Considerations for ISDN internetworking gateways . . . . . . . 11
   11. Coding requirements  . . . . . . . . . . . . . . . . . . . . . 12
   12. Media Feature Tag  . . . . . . . . . . . . . . . . . . . . . . 12
   13. IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 12
   14. Security Considerations  . . . . . . . . . . . . . . . . . . . 14
   15. Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 14
   16. References . . . . . . . . . . . . . . . . . . . . . . . . . . 15
     16.1. Normative References . . . . . . . . . . . . . . . . . . . 15
     16.2. Informative References . . . . . . . . . . . . . . . . . . 15
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 16

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1.  Terminology

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].

2.  Overview

   This document describes a usage of the User-to-User header field
   defined in [I-D.ietf-cuss-sip-uui] to enable the transport of User to
   User Information (UUI) in ISDN interworking scenarios using SIP
   [RFC3261].  Specifically, this document discusses the interworking of
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