US Patent 7362856 Subscriber line interface circuitry transceiver

A subscriber line transceiver apparatus includes an integrated circuit coupling at least one of an upstream and a downstream voice path for carrying voice signals to a subscriber line. The integrated circuit couples at least one of an upstream and a downstream data path for carrying data signals to the subscriber line. The voice signals are communicated within a first frequency range and the data signals are communicated within a second frequency range. The first and second frequency ranges are distinct.