Patent ID: 8139560

Claim:
A method of setting up and/or controlling a multimedia call involving an H.324 enabled user terminal and a circuit switched connection terminating at the user terminal and at a network node, the method comprising: sending DTMF control signals over the circuit switched connection within H.245 protocol control messages, data streams being multiplexed onto the circuit switched connection using the H.223 protocol; at said network node, demultiplexing the received data stream to recover the DTMF control signals, wherein said network node is a video gateway; on the basis of said DTMF control signals, routing or re-routing the connection at an intelligent network node to a data source or mapping the connection to a data source, further comprising routing the circuit-switched connection through said Intelligent Network node, the Intelligent Network node initially routing the connection to the video gateway on the basis of caller number, called number, or called or caller party location; and at the Intelligent Network node, subsequently re-routing the call to a telephone number located at the same or different video gateway on the basis of a DTMF signal contained in an H.245 control message received at the Intelligent Network Node.