A SIP adaptor modifies the format of a session initiation protocol (SIP) message. A SIP message in a first format is received by the SIP adaptor from a first SIP server that is based on the first message format. The SIP adaptor modifies the SIP message to a second format and forwards the modified SIP...http://www.google.com/patents/US20080320148?utm_source=gb-gplus-sharePatent US20080320148 - Session initiation protocol adaptor
