[8] “The Session Initiation Protocol (SIP) Refer Method, RFC 3515” by R.
Sparks. April 2003.
[9] http://www.ietf.org/html.charters/xcon-charter.html.
[10] “A Framework and Data Model for Centralized Conferencing” by M.
Barnes, C. Boulton, and O. Levin. IETF Internet Draft, October 2005, work
in progress.
[11] “The Binary Floor Control Protocol (BFCP)” by G. Camarillo, J. Ott, and K.
Drage. IETF Internet Draft, November 2005, work in progress.252 Chapter 14