3GPP SIP URI Inter-Operator Traffic Leg Parameter
RFC 7549
Document | Type |
RFC - Proposed Standard
(May 2015; No errata)
Was draft-holmberg-dispatch-iotl (individual)
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Authors | Christer Holmberg , Jan Holm , Roland Jesske , Martin Dolly | ||
Last updated | 2018-12-20 | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Reviews | |||
Stream | WG state | (None) | |
Document shepherd | Gonzalo Salgueiro | ||
Shepherd write-up | Show (last changed 2014-10-23) | ||
IESG | IESG state | RFC 7549 (Proposed Standard) | |
Action Holders |
(None)
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Consensus Boilerplate | Yes | ||
Telechat date | |||
Responsible AD | Richard Barnes | ||
Send notices to | (None) | ||
IANA | IANA review state | Version Changed - Review Needed | |
IANA action state | RFC-Ed-Ack |
Internet Engineering Task Force (IETF) C. Holmberg Request for Comments: 7549 J. Holm Category: Standards Track Ericsson ISSN: 2070-1721 R. Jesske Deutsche Telekom M. Dolly AT&T May 2015 3GPP SIP URI Inter-Operator Traffic Leg Parameter Abstract In 3GPP networks, the signaling path between a calling user and a called user can be partitioned into segments, referred to as traffic legs. Each traffic leg may span networks belonging to different operators and will have its own characteristics that can be different from other traffic legs in the same call. A traffic leg might be associated with multiple SIP dialogs, e.g., in case a Back-to-Back User Agent (B2BUA) that modifies the SIP dialog identifier is located within the traffic leg. This document defines a new SIP URI parameter, 'iotl' (an abbreviation for Inter-Operator Traffic Leg). The parameter can be used in a SIP URI to indicate that the entity associated with the address, or an entity responsible for the host part of the address, represents the end of a specific traffic leg (or multiple traffic legs). The SIP URI 'iotl' parameter defined in this document has known uses in 3GPP networks. Usage in other networks is also possible. 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/rfc7549. Holmberg, et al. Standards Track [Page 1] RFC 7549 3GPP 'iotl' May 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. Holmberg, et al. Standards Track [Page 2] RFC 7549 3GPP 'iotl' May 2015 Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 4 2. Conventions . . . . . . . . . . . . . . . . . . . . . . . . . 6 3. Applicability . . . . . . . . . . . . . . . . . . . . . . . . 6 4. Traffic Leg Examples . . . . . . . . . . . . . . . . . . . . 6 4.1. General . . . . . . . . . . . . . . . . . . . . . . . . . 6 4.2. Originating Roaming Call . . . . . . . . . . . . . . . . 6 4.3. Terminating Roaming Call . . . . . . . . . . . . . . . . 7 4.4. Call from Originating Home to Terminating Home . . . . . 7 5. 'iotl' SIP URI Parameter . . . . . . . . . . . . . . . . . . 7 5.1. Usage . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5.2. Parameter Values . . . . . . . . . . . . . . . . . . . . 8 5.2.1. General . . . . . . . . . . . . . . . . . . . . . . . 8 5.2.2. homea-homeb . . . . . . . . . . . . . . . . . . . . . 8 5.2.3. homeb-visitedb . . . . . . . . . . . . . . . . . . . 8 5.2.4. visiteda-homea . . . . . . . . . . . . . . . . . . . 9 5.2.5. homea-visiteda . . . . . . . . . . . . . . . . . . . 9 5.2.6. visiteda-homeb . . . . . . . . . . . . . . . . . . . 9 6. Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6.1. General . . . . . . . . . . . . . . . . . . . . . . . . . 10 6.2. ABNF . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7. Security Considerations . . . . . . . . . . . . . . . . . . . 10 8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 10 9. References . . . . . . . . . . . . . . . . . . . . . . . . . 11 9.1. Normative References . . . . . . . . . . . . . . . . . . 11Show full document text