US Patent 7920493 Fast session setup extensions to H.324

A method of initiating a set up process for a call between users with reduced set up times using one or more 3G telecommunication networks. The method is provided between at least a pair of H.324-like terminals coupled to the one or more 3G telecommunication networks. The method includes establishing a bearer channel between a first terminal and a second terminal after a call signaling process, transmitting a first FSS message from the first terminal to the second terminal. The first FSS message includes a first preference profile associated with a first mode of operation for the call and a second preference profile associated with a second mode of operation for the call. The method also includes selecting either the first mode of operation or the second mode of operation.