A system and method for transporting data units for a communication network. In a communication between two peers a proxy and a network entity for controlling a partial communication are provided. One or both of the proxy and the network entity is arranged to modify one or more of the data units, in...http://www.google.de/patents/US7991868?utm_source=gb-gplus-sharePatent US7991868 - System and method for transporting data units through a communication network
