Interworking ISDN Call Control User Information with SIP
RFC 7434
Document | Type | RFC - Proposed Standard (January 2015; Errata) | |
---|---|---|---|
Authors | Keith Drage , Alan Johnston | ||
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 (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must 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. 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] dataShow full document text