A Session Initiation Protocol (SIP) INFO package for Private Wire
draft-beauchamp-private-wire-11

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Last updated 2017-06-01
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Network Working Group                                          F. Fraser
Internet-Draft                                        BT Trading Systems
Intended status: Informational                                C. Boulton
Expires: December 2, 2017                                   R. Beauchamp
                                                                Dialogic
                                                            May 31, 2017

   A Session Initiation Protocol (SIP) INFO package for Private Wire
                    draft-beauchamp-private-wire-11

Abstract

   Application level data exchanged using the SIP INFO method are
   supported and documented in specifications known as 'INFO Packages'.
   This document defines functionality associated with Session
   Initiation Protocol (SIP) Private Wire functionality and creates an
   'INFO Package' for carrying such application level data.

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   This Internet-Draft will expire on December 2, 2017.

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   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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Fraser, et al.          Expires December 2, 2017                [Page 1]
Internet-Draft      SIP INFO Package for Private Wire           May 2017

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions and Terminology . . . . . . . . . . . . . . . . .   5
   3.  Overview of Operation . . . . . . . . . . . . . . . . . . . .   5
     3.1.  Overlapping Requests  . . . . . . . . . . . . . . . . . .   6
     3.2.  Incorrect Private Wire Type . . . . . . . . . . . . . . .   7
   4.  Private Wire Package Definition . . . . . . . . . . . . . . .   7
     4.1.  Overall Description . . . . . . . . . . . . . . . . . . .   7
     4.2.  Applicability . . . . . . . . . . . . . . . . . . . . . .   7
     4.3.  INFO Package Name . . . . . . . . . . . . . . . . . . . .   7
     4.4.  INFO Package Parameters . . . . . . . . . . . . . . . . .   7
     4.5.  SIP OPTION tags . . . . . . . . . . . . . . . . . . . . .   8
     4.6.  INFO Message Body Parts . . . . . . . . . . . . . . . . .   8
   5.  Element Definitions . . . . . . . . . . . . . . . . . . . . .   8
     5.1.  <pwSignal>  . . . . . . . . . . . . . . . . . . . . . . .   8
       5.1.1.  <ringDown>  . . . . . . . . . . . . . . . . . . . . .   9
       5.1.2.  <hookSwitch>  . . . . . . . . . . . . . . . . . . . .   9
   6.  'pwtype' INFO Package Parameter . . . . . . . . . . . . . . .   9
   7.  SIP OPTIONS Tag . . . . . . . . . . . . . . . . . . . . . . .  10
   8.  Example Exchange  . . . . . . . . . . . . . . . . . . . . . .  10
   9.  Formal Syntax . . . . . . . . . . . . . . . . . . . . . . . .  14
   10. Legacy Interoperation . . . . . . . . . . . . . . . . . . . .  16
   11. Security Considerations . . . . . . . . . . . . . . . . . . .  16
   12. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  16
     12.1.  application/pw-info+xml MIME type  . . . . . . . . . . .  16
     12.2.  pw-info-package SIP OPTIONS tag  . . . . . . . . . . . .  17
   13. Change Summary  . . . . . . . . . . . . . . . . . . . . . . .  17
   14. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  18
   15. Normative References  . . . . . . . . . . . . . . . . . . . .  18
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  18

1.  Introduction

   Private Wire (PW) is a generic term used to describe static point to
   point voice connections between two locations.  Private Wires are
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