Patent ID: 8548538

Claim:
A mobile communication device comprising: a body forming a port for receiving a jack plug of a headset, the jack plug comprising at least a microphone portion and a speaker portion; and a processor configured to receive a control signal transmitted from the headset via the jack plug and to execute a function in response to receipt of said control signal; wherein the headset comprises the jack plug and further comprises: a speaker, a multi-button control, said multi-button control comprising a set of buttons, a controller connected to the buttons, wherein said controller detects depression of a button of said set of buttons and transmits the control signal, a microphone and wires, the wires including a first microphone wire connecting the microphone to the microphone portion of the jack plug, a speaker wire connecting the speaker to the speaker portion of the jack plug, and a second microphone wire connecting an output of the controller to the microphone portion of the jack plug; wherein the processor is coupled to the port so as to receive the control signal transmitted via the second microphone wire.