Patent ID: 8259709

Claim:
A method of controlling a multimedia communication session between a first terminal and a second terminal, said multimedia communication session being divided into a circuit-switched part using a separate circuit-switched logic system comprising network elements or nodes handling circuit-switched voice, and a packet-switched part using a packet-switched logic system comprising network elements or nodes handling packet-switched data, comprising the following steps, executed by a common session server connected to and serving both the logic system of the circuit-switched part and the logic system of the packet-switched part: receiving a notification on a session event occurring in one of said circuit-switched and packet-switched parts, from the logic system of that one part of the multimedia communication session, reporting to the logic system of the other part of the multimedia communication session about said session event, wherein said other part is controlled in response to said session event, and wherein the first terminal is currently connected to an access network and belongs to a home network different from the access network, and said session event occurs in the circuit-switched part, wherein the access network informs the home network on the session event, and that said notification on the session event is received at the common session server from the home network.