A combined sidetone and hybrid balance apparatus and method of operating
same are disclosed. An embodiment of the present invention may provide
both a hybrid balance mode of operation and a sidetone generation mode of
operation within a single integrated circuit device. The functionality
provided by an embodiment of the present invention may be used in both
Internet protocol (IP)-based telephones and residential gateways, and may
be incorporated within the IP telephone chip used in such devices. An
embodiment of the present invention may be used to reduce processor
demand and the cost of materials, permitting greater IP telephone or
residential gateway functionality at lower cost.