Patent ID: 8184620

Claim:
A method for transmitting communication data comprising: a first terminal device sending a call signaling tone to a second terminal device via a plurality of node units during a connection setup of a primary connection between the first terminal device and the second terminal device, the plurality of node units comprising a first end node unit, a second end node unit, and at least one further node unit positioned between the first end node unit and the second end node unit in the primary connection; the first end node unit detecting the call signaling tone and switching to a coding method specified in the call signaling tone for a communication leg to the at least one further node unit of the plurality of node units in the primary connection; the second end node unit setting up a direct media connection to the first end node unit; the first end node unit optimizing the direct media connection at the first end node unit using at least one transmission parameter obtained from the call signaling tone; the first end node unit sending an optimization message to the second end node unit; the second end node unit optimizing the direct media connection using the at least one transmission parameter obtained from signaling used to form the primary connection in response to the optimization message sent by the first end node unit, the primary connection being a different connection from the direct media connection.