Interworking ISDN Call Control User Information with SIP
RFC 7434
| Document | Type | RFC - Proposed Standard (January 2015; Errata) | |
|---|---|---|---|
| Last updated | 2020-01-21 | ||
| Replaces | draft-drage-cuss-sip-uui-isdn | ||
| Stream | IETF | ||
| Formats | plain text html pdf htmlized with errata bibtex | ||
| Reviews | |||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | Vijay Gurbani | ||
| Shepherd write-up | Show (last changed 2014-03-11) | ||
| IESG | IESG state | RFC 7434 (Proposed Standard) | |
| Consensus Boilerplate | Yes | ||
| Telechat date | |||
| Responsible AD | Alissa Cooper | ||
| IESG note |
OLD parsing and interpreting "isdn- interwork" the same way as "isdn-uui" when receiving messages. NEW parsing and interpreting "isdn-interwork" the same way as "isdn-uui" when receiving messages. |
||
| Send notices to | (None) | ||
| IANA | IANA review state | Version Changed - Review Needed | |
| IANA action state | RFC-Ed-Ack | ||
Internet Engineering Task Force (IETF) K. Drage, Ed.
Request for Comments: 7434 Alcatel-Lucent
Category: Standards Track A. Johnston
ISSN: 2070-1721 Avaya
January 2015
Interworking ISDN Call Control User Information with SIP
Abstract
The motivation and use cases for interworking and transporting User-
to-User Information (UUI) from the ITU-T Digital Subscriber
Signalling System No. 1 (DSS1) User-user information element within
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 have the ability to interwork
with this ISDN service for end-to-end transparency. This document
defines a usage (a new package called the ISDN UUI package) of the
User-to-User header field to enable interworking with this ISDN
service.
This document covers interworking with both public ISDN and private
ISDN capabilities, so the potential interworking with QSIG will also
be addressed.
The package is identified by the new value "isdn-uui" of the
"purpose" header field parameter.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc7434.
Drage & Johnston Standards Track [Page 1]
RFC 7434 ISDN Call Control UUI January 2015
Copyright Notice
Copyright (c) 2015 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
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the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 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 . . . . . . 6
4. Relation to SIP-T . . . . . . . . . . . . . . . . . . . . . . 6
5. Transition Away from ISDN . . . . . . . . . . . . . . . . . . 7
6. ISDN Usage of the User-to-User Header Field . . . . . . . . . 7
7. UAC Requirements . . . . . . . . . . . . . . . . . . . . . . 8
8. UAS Requirements . . . . . . . . . . . . . . . . . . . . . . 10
9. UUI Contents . . . . . . . . . . . . . . . . . . . . . . . . 11
10. Considerations for ISDN Interworking Gateways . . . . . . . . 12
11. Coding Requirements . . . . . . . . . . . . . . . . . . . . . 12
12. Media Feature Tag . . . . . . . . . . . . . . . . . . . . . . 13
13. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 13
14. Security Considerations . . . . . . . . . . . . . . . . . . . 14
15. References . . . . . . . . . . . . . . . . . . . . . . . . . 15
15.1. Normative References . . . . . . . . . . . . . . . . . . 15
15.2. Informative References . . . . . . . . . . . . . . . . . 16
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . 17
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 17
Drage & Johnston Standards Track [Page 2]
RFC 7434 ISDN Call Control UUI January 2015
1. Overview
This document describes a usage of the User-to-User header field
defined in [RFC7433] to enable the transport of UUI in ISDN
interworking scenarios using SIP [RFC3261]. Specifically, this
document discusses the interworking of the following items, which are
call control related: ITU-T Recommendation Q.931 DSS1 User-user
information element [Q931], ITU-T Recommendation Q.957.1 DSS1 User-
to-User Signalling (UUS) supplementary service [Q957.1], and ITU-T
Recommendation Q.763 User-to-User information parameter [Q763] data
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