The SIP P-Served-User Private-Header (P-Header) for the 3GPP IP Multimedia (IM) Core Network (CN) Subsystem
RFC 5502
Document | Type |
RFC - Informational
(April 2009; Errata)
Was draft-vanelburg-sipping-served-user (individual in rai area)
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Author | Hans van Elburg | ||
Last updated | 2016-03-31 | ||
Stream | Internent Engineering Task Force (IETF) | ||
Formats | plain text html pdf htmlized (tools) htmlized bibtex | ||
Reviews | |||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 5502 (Informational) | |
Action Holders |
(None)
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Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Jon Peterson | ||
Send notices to | sipping-chairs@ietf.org |
Network Working Group J. van Elburg Request for Comments: 5502 Ericsson Telecommunicatie B.V. Category: Informational April 2009 The SIP P-Served-User Private-Header (P-Header) for the 3GPP IP Multimedia (IM) Core Network (CN) Subsystem Status of This Memo This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. Copyright Notice Copyright (c) 2009 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 in effect on the date of publication of this document (http://trustee.ietf.org/license-info). Please review these documents carefully, as they describe your rights and restrictions with respect to this document. This document may contain material from IETF Documents or IETF Contributions published or made publicly available before November 10, 2008. The person(s) controlling the copyright in some of this material may not have granted the IETF Trust the right to allow modifications of such material outside the IETF Standards Process. Without obtaining an adequate license from the person(s) controlling the copyright in such materials, this document may not be modified outside the IETF Standards Process, and derivative works of it may not be created outside the IETF Standards Process, except to format it for publication as an RFC or to translate it into languages other than English. Abstract This document specifies the SIP P-Served-User P-header. This header field addresses an issue that was found in the 3rd Generation Partnership Project (3GPP) IMS (IP Multimedia Subsystem) between an S-CSCF (Serving Call Session Control Function) and an AS (Application Server) on the ISC (IMS Service Control) interface. This header field conveys the identity of the served user and the session case that applies to this particular communication session and application invocation. van Elburg Informational [Page 1] RFC 5502 The P-Served-User P-Header April 2009 Table of Contents 1. Introduction ....................................................3 2. Conventions .....................................................3 3. Definitions .....................................................3 3.1. Identity, Network Asserted Identity, Trust Domain, and Spec(T) ................................................3 3.2. Served User ................................................3 4. Scenarios .......................................................4 4.1. General ....................................................4 4.2. Diversion: Continue on Terminating Leg, but Finish Subsequent Terminating iFC First ...........................5 4.3. Diversion: Create New Originating Leg and Provide Originating iFC Processing .................................6 4.4. Call Out of the Blue: on Behalf of User B, but Service Profile of Service Identity C.......................8 5. Requirements ....................................................8 6. P-Served-User Header Field Definition ...........................9 7. Proxy Behavior ..................................................9 7.1. Generating the P-Served-User Header ........................9 7.2. Consuming the P-Served-User Header ........................10 8. Applicability ..................................................10 9. IANA Considerations ............................................11 10. Security Considerations .......................................11 11. Acknowledgments ...............................................11 12. References ....................................................12 12.1. Normative References .....................................12 12.2. Informative References ...................................12 Appendix A. Why the History-Info Header Is Not Suitable to Convey the Served User Information on the ISC Interface ............................................13 A.1. Semantics ................................................13 A.2. Additional Observations ..................................13 A.3. Conclusion ................................................14 van Elburg Informational [Page 2] RFC 5502 The P-Served-User P-Header April 2009 1. Introduction The 3rd Generation Partnership Project (3GPP) IMS (IP Multimedia Subsystem) uses SIP (RFC 3261 [2]) as its main signaling protocol. (For more information on the IMS, a detailed description can be foundShow full document text