Two wire voice and data subscriber loop

Details Two wire voice and data subscriber loop Two wire voice and data subscriber loop

H - Electricity

04

M

379/3

H04M 11/00 (2006.01) H04M 9/00 (2006.01) H04M 11/06 (2006.01)

Patent

CA 1175964

TWO WIRE VOICE AND DATA SUBSCRIBER LOOP ABSTRACT OF THE DISCLOSURE A circuit for transmitting both voice and data at the same time between a subscriber's set and a switching exchange via a bidirectional two wire link. The invention is comprised of a subscriber's set adapted to generate and receive baseband voice signals and data signals, a circuit for 100% amplitude modulating the generated data signal on a carrier signal having its lowest sideband after filtering above the voice signal base band, a circuit for applying the voice signals and modulated carrier to a two-wire subscriber's line, a circuit for separating the voice signals and modulated carrier, and a circuit for demodulating the digital signal and applying the digital signal to control circuits of a switching exchange. Voice signals are applied to voice handling circuits such as the voice switching circuits of the switching machine.

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