Conference Focus Indicating CCMP Support
draft-yusef-dispatch-ccmp-indication-04

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Document Type Active Internet-Draft (individual)
Last updated 2013-09-12 (latest revision 2013-05-10)
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Intended RFC status Proposed Standard
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Document shepherd Alan Johnston
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Send notices to rifatyu@avaya.com, mary.ietf.barnes@gmail.com, draft-yusef-dispatch-ccmp-indication@tools.ietf.org, alan.johnston@mci.com
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INTERNET-DRAFT                                            R. Shekh-Yusef
Intended Status: Standards Track                                   Avaya
Updates: 3261, 4575                                            M. Barnes
Expires: November 11, 2013                                       Polycom
                                                            May 10, 2013

                Conference Focus Indicating CCMP Support
                draft-yusef-dispatch-ccmp-indication-04

Abstract

   The Centralized Conferencing Manipulation Protocol document defines a
   way for a client to discover a conference control server that
   supports CCMP. However, it does not define a way for a client
   involved in a conference to determine if the conference focus
   supports CCMP. This information would allow a CCMP-enabled client
   that joins a conference using SIP to also register for the XCON
   conference event package RFC 4575 [RFC4575] and take advantage of
   CCMP operations on the conference.

   This document describes a few options to address the above limitation
   with the pros and cons for each approach, and recommends two to be
   used depending on the need of the UA. The first approach uses the
   Call-Info header and as a result this document updates RFC 3261
   [RFC3261]. The second approach defines a new value for the 'purpose'
   parameter in the 'service-uris' element in the SIP conferencing event
   package, and as a result this document updates RFC 4575 [RFC4575].

Status of this Memo

   This Internet-Draft is submitted to IETF in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups.  Note that
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Shekh-Yusef & Barnes   Expires November 11, 2013                [Page 1]
INTERNET DRAFT       Conference Focus CCMP Support          May 10, 2013

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Copyright and License Notice

   Copyright (c) 2013 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
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   carefully, as they describe your rights and restrictions with respect
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   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.

 

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Table of Contents

   1  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . .  4
     1.1  Terminology . . . . . . . . . . . . . . . . . . . . . . . .  4
   2  Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . .  5
     2.1 Call-Info  . . . . . . . . . . . . . . . . . . . . . . . . .  5
     2.2 Service URI purpose  . . . . . . . . . . . . . . . . . . . .  5
   3  Security Considerations . . . . . . . . . . . . . . . . . . . .  5
   4  IANA Considerations . . . . . . . . . . . . . . . . . . . . . .  6
     4.1 Call-Info Purpose Registration . . . . . . . . . . . . . . .  6
     4.2 URI Purpose Registration . . . . . . . . . . . . . . . . . .  6
   5  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . .  7
   6  References  . . . . . . . . . . . . . . . . . . . . . . . . . .  7
     6.1  Normative References  . . . . . . . . . . . . . . . . . . .  7
   Appendix A. Other Approaches Considered  . . . . . . . . . . . . .  8
     A.1 Feature Tag  . . . . . . . . . . . . . . . . . . . . . . . .  8
     A.2 Conference URI purpose . . . . . . . . . . . . . . . . . . .  8
   Author's Addresses . . . . . . . . . . . . . . . . . . . . . . . .  9

 

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1  Introduction

   RFC 5238 [RFC5239] defines a framework for Centralized Conferencing,
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