Name: draft-ietf-sipping-cc-conferencing-06
Title: Session Initiation Protocol Call Control - Conferencing for User Agents
State: Active
Authors: Alan Johnston, Orit Levin
Group: Session Initiation Proposal Investigation (sipping)
Date: 2004-11-30
This specification defines conferencing call control features for the
Session Initiation Protocol (SIP). This document builds on the Conferencing
Requirements and Framework documents to define how a tightly coupled SIP
conference works. The approach is explored from different user agent (UA)
types perspective: conference-unaware, conference-aware and focus UAs. The
use of URIs in conferencing, OPTIONS for capabilities discovery, and call
control using REFER are covered in detail with example call flow diagrams.
The usage of the isfocus feature tag is defined.
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