Implementing Multiple Line Appearances using the Session Initiation Protocol (SIP)
draft-anil-sipping-bla-04

Document Type Expired Internet-Draft (individual)
Author Anil Kumar 
Last updated 2007-03-06
Stream (None)
Intended RFC status (None)
Formats
Expired & archived
pdf htmlized (tools) htmlized bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at
https://www.ietf.org/archive/id/draft-anil-sipping-bla-04.txt

Abstract

This document describes the implementation of a group telephony feature commonly known as Bridged Line Appearance (BLA), Multiple Line Appearance (MLA), or Shared Call/Line Appearance (SCA). When implemented using the Session Initiation Protocol (SIP), it is referred to as Multiple Appearances. This feature is commonly offered in the IP Centrex services and IP-PBX offerings and is likely to be implemented on SIP IP telephones and SIP feature servers used in a business environment. This specification defines a new SIP dialog event package tag "appearance" and a method for a group of SIP user agents to coordinate the identification of appearances between them using SIP dialog package subscriptions.

Authors

Anil Kumar (anil@yahoo-inc.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)