A call controller is configured to monitor call signaling for a media call between a first and second endpoint. The call controller dynamically determines when to insert a media proxy into a media session for the call according to a relationship in network topology between the first and second endpo...http://www.google.com/patents/US7542461?utm_source=gb-gplus-sharePatent US7542461 - Method and apparatus for dynamically determining when to use quality of service reservation in internet media applications
