In a technique for setting up calls in IP mobile networks, when an application level in a mobile station sends a setup message to set up a multimedia call, before sending such a message over the radio interface, the mobile station performs the appropriate procedures to setup the appropriate bearers over...http://www.google.fr/patents/US7123920?utm_source=gb-gplus-shareBrevet US7123920 - Technique for setting up calls in mobile network
