URNs for the Alert-Info Header Field of the Session Initiation Protocol (SIP)
RFC 7462
Document | Type |
RFC - Proposed Standard
(March 2015; No errata)
Updates RFC 3261
|
|
---|---|---|---|
Authors | Laura Liess , Roland Jesske , Alan Johnston , Dale Worley , Paul Kyzivat | ||
Last updated | 2018-12-20 | ||
Replaces | draft-liess-dispatch-alert-info-urns | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication | |
Document shepherd | Christer Holmberg | ||
Shepherd write-up | Show (last changed 2014-03-10) | ||
IESG | IESG state | RFC 7462 (Proposed Standard) | |
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) L. Liess, Ed. Request for Comments: 7462 R. Jesske Updates: 3261 Deutsche Telekom AG Category: Standards Track A. Johnston ISSN: 2070-1721 Avaya D. Worley Ariadne P. Kyzivat Huawei March 2015 URNs for the Alert-Info Header Field of the Session Initiation Protocol (SIP) Abstract The Session Initiation Protocol (SIP) supports the capability to provide a reference to a specific rendering to be used by the User Agent (UA) as an alerting signal (e.g., a ring tone or ringback tone) when the user is alerted. This is done using the Alert-Info header field. However, the reference (typically a URL) addresses only a specific network resource with specific rendering properties. There is currently no support for standard identifiers for describing the semantics of the alerting situation or the characteristics of the alerting signal, without being tied to a particular rendering. To overcome these limitations and support new applications, a new family of URNs for use in Alert-Info header fields (and situations with similar requirements) is defined in this specification. This document normatively updates RFC 3261, which defines the Session Initiation Protocol (SIP). It changes the usage of the Alert-Info header field defined in RFC 3261 by additionally allowing its use in any non-100 provisional response to INVITE. This document also permits proxies to add or remove an Alert-Info header field and to add or remove Alert-Info header field values. Liess, et al. Standards Track [Page 1] RFC 7462 Alert URNs March 2015 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/rfc7462. 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. 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. Liess, et al. Standards Track [Page 2] RFC 7462 Alert URNs March 2015 Table of Contents 1. Introduction ....................................................5 2. Requirements Language ...........................................7 3. Terminology .....................................................7 4. Updates to RFC 3261 .............................................7 4.1. Allow Alert-Info in Provisional Responses ..................7 4.2. Proxies May Alter Alert-Info Header Fields .................8 5. Requirements ....................................................8 6. Use Cases ......................................................10Show full document text