Two wire voice and data subscriber loop

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

1982-09-23

1986-08-26

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 76, 179 2DP, H04J 100, H04J 114, H04M 1100

Patent

active

046086862

ABSTRACT:
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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