Conferencing Scenarios
RFC 4597

 
Document Type RFC - Informational (August 2006; No errata)
Last updated 2013-03-02
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IESG IESG state RFC 4597 (Informational)
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Responsible AD Allison Mankin
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Network Working Group                                            R. Even
Request for Comments: 4597                                       Polycom
Category: Informational                                        N. Ismail
                                                     Cisco Systems, Inc.
                                                               July 2006

                         Conferencing Scenarios

Status of This Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2006).

Abstract

   This document describes multimedia conferencing scenarios.  It
   describes both basic and advanced conferencing scenarios involving
   voice, video, text, and interactive text sessions.  These scenarios
   will help with the definition and evaluation of the protocols being
   developed in the centralized conferencing XCON working group.

Even & Ismail                Informational                      [Page 1]
RFC 4597                  Conference Scenarios                 July 2006

Table of Contents

   1. Introduction ....................................................3
   2. Basic Conferencing Scenarios ....................................3
      2.1. Ad Hoc Conferences .........................................4
      2.2. Extension of a Point-to-Point Call to a Multipoint Call ....4
      2.3. Reserved Conferences .......................................4
   3. Advanced Conferencing Scenarios .................................5
      3.1. Extending a Point-to-Point Call to a Multipoint Call .......5
      3.2. Lecture Mode Conferences ...................................5
      3.3. Conference with Conference-Aware and Unaware Participants ..6
      3.4. A Reserved or Ad Hoc Conference with
           Conference-Aware Participants ..............................6
      3.5. Advanced Conference Features ...............................6
   4. Scenarios for Media Policy Control ..............................9
      4.1. Video Mixing Scenarios ....................................10
      4.2. Typical Video Conferencing Scenario .......................11
      4.3. Conference Sidebar Scenario ...............................11
      4.4. Coaching Scenario .........................................12
      4.5. Presentation and Q & A Session ............................12
      4.6. Presence-Enabled Ad Hoc Conference ........................13
      4.7. Group Chat Text Conferencing ..............................13
      4.8. Interactive Text ..........................................13
      4.9. Moderated Group Chat ......................................14
      4.10. Text Sidebars ............................................14
      4.11. Conference Announcements .................................14
   5. Security Considerations ........................................14
   6. Acknowledgements ...............................................15
   7. Informative References .........................................15

Even & Ismail                Informational                      [Page 2]
RFC 4597                  Conference Scenarios                 July 2006

1.  Introduction

   This document describes multimedia conferencing scenarios.  The
   development of these scenarios is intended to help with the
   definition and evaluation of the requirements for the centralized
   conferencing (XCON) working group.  Although this document uses some
   definitions and conventions described in the SIP Conferencing
   Framework document [1], these scenarios are not specific to SIP.  The
   document describes basic and advanced conferencing scenarios.  The
   advanced scenarios assume that the user agents support the set of
   XCON protocols, identified in the Framework and Data Model for
   Centralized Conferencing [3], in order to take advantage of the
   conference functionality.  However, note that many of these features
   can be implemented today by using an interactive voice response (IVR)
   or web interface to control the conferencing application.

   The entities comprising the Conferencing System are the conference
   that is the center point for signaling and the participants.  The
   participant who initiated the conference is called the initiating
   participant.

   The scenarios described here demonstrate different conferencing
   services.  These services can be offered in a multimedia environment
   that benefits from having some support in the user agents that enable
   more robust and easier-to-use conferencing services.  It is up to the
   conferencing system manufacturers and the conferencing service
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