rfc5853.txt:Robert F. Penfield:acmepacket:usa:25:apr:2010:UNKNOWN:figure,seccons:draft-ietf-sipping-sbc-funcs:2010-02-22:2007-04-20:4:236:778:19:1037:6:2005-02-15:647:draft-camarillo-sipping-sbc-funcs:2006-11-27:148:2010-04-30:68