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
|
|
|---|---|---|---|
| Last updated | 2020-01-21 | ||
| Stream | ISE | ||
| Formats | plain text html pdf htmlized with errata 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
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RFC 6044 Mapping Diversion and History-Info October 2010
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