Mapping and Interworking of Diversion Information between Diversion and History-Info Headers in the Session Initiation Protocol (SIP)
RFC 6044
Document | Type |
RFC - Informational
(October 2010; Errata)
Obsoleted by RFC 7544
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Last updated | 2018-12-20 | ||
Stream | ISE | ||
Formats | plain text pdf html bibtex | ||
Stream | ISE state | (None) | |
Consensus Boilerplate | Unknown | ||
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 6044 (Informational) | |
Telechat date | |||
Responsible AD | Robert Sparks | ||
Send notices to | rfc-ise@rfc-editor.org |
Independent Submission M. Mohali Request for Comments: 6044 France Telecom Orange Category: Informational October 2010 ISSN: 2070-1721 Mapping and Interworking of Diversion Information between Diversion and History-Info Headers in the Session Initiation Protocol (SIP) Abstract Although the SIP History-Info header is the solution adopted in IETF, the non-standard Diversion header is nevertheless widely implemented and used for conveying call-diversion-related information in SIP signaling. This document describes a recommended interworking guideline between the Diversion header and the History-Info header to handle call diversion information. In addition, an interworking policy is proposed to manage the headers' coexistence. The History-Info header is described in RFC 4244 and the non-standard Diversion header is described, as Historic, in RFC 5806. Since the Diversion header is used in many existing network implementations for the transport of call diversion information, its interworking with the SIP History-Info standardized solution is needed. This work is intended to enable the migration from non- standard implementations and deployment toward IETF specification- based implementations and deployment. Status of This Memo This document is not an Internet Standards Track specification; it is published for informational purposes. This is a contribution to the RFC Series, independently of any other RFC stream. The RFC Editor has chosen to publish this document at its discretion and makes no statement about its value for implementation or deployment. Documents approved for publication by the RFC Editor are not a candidate for any level of Internet Standard; see 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/rfc6044. Mohali Informational [Page 1] RFC 6044 Mapping Diversion and History-Info October 2010 Copyright Notice Copyright (c) 2010 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. Table of Contents 1. Introduction ....................................................3 1.1. Overview ...................................................3 1.2. Background .................................................3 2. Problem Statement ...............................................4 2.1. Interworking Requirements and Scope ........................4 2.2. Interworking Recommendations ...............................6 2.2.1. SIP Network/Terminal Using Diversion to SIP Network/Terminal Using History-Info Header ..........6 2.2.2. SIP Network/Terminal Using History-Info Header to SIP Network/terminal Using Diversion Header ..............................................8 3. Headers Syntaxes Reminder .......................................9 3.1. History-Info Header Syntax .................................9 3.2. Diversion Header Syntax ...................................11 4. Headers in SIP Method ..........................................11 5. Diversion Header to History-Info Header ........................12 6. History-Info Header to Diversion Header ........................15 7. Examples .......................................................17 7.1. Example with Diversion Header Changed into History-Info Header .......................................17 7.2. Example with History-Info Header Changed into Diversion Header ..........................................17 7.3. Example with Two SIP Networks Using History-Info Header ...17 7.4. Additional Interworking Cases .............................19 8. Security Considerations ........................................20 9. Acknowledgements ...............................................21 10. References ....................................................21 10.1. Normative References .....................................21 10.2. Informative References ...................................21 Appendix A. Interworking between Diversion Header and Voicemail URI ........................................23 Mohali Informational [Page 2] RFC 6044 Mapping Diversion and History-Info October 2010Show full document text