rfc5897.txt:Jonathan Rosenberg:jdrosen:usa:22:jun:2010:UNKNOWN:seccons:draft-ietf-sipping-service-identification:2010-03-23:2008-10-30:123:156:199:35:513:1:2007-01-22:189:draft-rosenberg-sipping-service-identification:2007-08-01:454:2010-06-11:78