A BRIDGING USER AGENT AND A PROXY SERVER FOR SUPPORTING NETWORK SERVICES

摘要

An approach for providing voice processing over a packet switched network (113) is disclosed. A communication system (100) includes a special forking proxy server (109) that receives a message for establishing a session betwee n a calling user agent (101)and a called user agent (103). The message has a first payload corresponding to a first call leg. The system also includes a bridging user agent (107) that communicates with the first network element a nd generates a response that contains the first payload and a second payload th at corresponds to a second call leg. The bridging user agent (107) is configure d to bridge the first call leg and the second call leg to establish a session between the calling user agent (101) and the called user agent (103). The special forking proxy server (109) is configured to fork an acknowledgement message from the calling party to acknowledge the session establishment by t he called user agent. The present invention has particular applicability to SIP (Session Initiation Protocol) IP (Internet Protocol) telephony services.