rfc4538.txt:Jonathan Rosenberg:cisco:usa:17:jun:2006:UNKNOWN:figure,kwd,seccons,ianacons:draft-ietf-sip-target-dialog:2006-03-02:2005-12-19:53:0:5:20:78:1:2005-04-04:0::2005-04-04:255:2006-06-30:118