rfc4353.txt:Jonathan Rosenberg:cisco:usa:28:feb:2006:UNKNOWN:figure,seccons:draft-ietf-sipping-conferencing-framework:2005-08-01:2005-05-27:0:0:64:0:64:0:2002-10-28:188:draft-rosenberg-sipping-conferencing-framework:2003-5-1:756:2005-12-04:123