rfc5079.txt:Jonathan Rosenberg:cisco:usa:8:dec:2007:UNKNOWN:kwd,seccons,ianacons:draft-ietf-sip-acr-code:2007-10-08:2007-03-14:190:0:8:6:204:1:2005-11-8:74:draft-rosenberg-sipping-acr-code:2006-01-17:422:2008-01-28:115