Shared Appearances of a Session Initiation Protocol (SIP) Address of Record (AOR) (RFC7463)
Original Publication Date: 2015-Mar-01
Included in the Prior Art Database: 2015-Mar-26
Internet Society Requests For Comment (RFCs)
A. Johnston: AUTHOR [+4]
The feature and functionality requirements for SIP user agents (UAs) supporting business telephony applications differ greatly from basic SIP UAs, both in terms of services and end-user experience. In
Internet Engineering Task Force (IETF) A. Johnston, Ed. Request for Comments: 7463 Avaya Updates: 3261, 4235 M. Soroushnejad, Ed. Category: Standards Track V. Venkataramanan ISSN: 2070-1721 Sylantro Systems Corp. March 2015
Shared Appearances of a Session Initiation Protocol (SIP) Address of Record (AOR)
This document describes the requirements and implementation of a group telephony feature commonly known as Bridged Line Appearance (BLA) or Multiple Line Appearance (MLA), or Shared Call/Line Appearance (SCA). When implemented using the Session Initiation Protocol (SIP), it is referred to as shared appearances of an Address of Record (AOR) since SIP does not have the concept of lines. This feature is commonly offered in IP Centrex services and IP Private Branch Exchange (IPBX) offerings and is likely to be implemented on SIP IP telephones and SIP feature servers used in a business environment. This feature allows several user agents (UAs) to share a common AOR, learn about calls placed and received by other UAs in the group, and pick up or join calls within the group. This document discusses use cases, lists requirements, and defines extensions to implement this feature. This specification updates RFCs 3261 and 4235.
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/rfc7463.
Copyright (c) 2015 IETF Trust and the persons identified as the document authors. All rights reserved.
Johnston, et al. Standards Track [Page 1]
RFC 7463 SIP Shared Appearances March 2015
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