Single channel subscriber carrier system

Details Single channel subscriber carrier system Single channel subscriber carrier system

1984-06-18

1987-03-24

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 71, 379 65, H04J 102, H04B 354, H04H 108, H04M 1108

Patent

active

046530460

ABSTRACT:
There is provided an improved subscriber carrier system which enables the transmission of both voice frequencies and carrier frequencies by a common line without the need for a battery at the subscriber carrier terminal to supply power for the subscriber carrier electronics. A high voltage power supply is utilized to supply power, both for the voice frequency terminal and the subscriber carrier terminal. Loop supervision circuitry is isolated from the power supply. Ringing signals are detected and regenerated at a frequency to pass through the isolation circuit.

REFERENCES:
patent: 2721897 (1955-10-01), Schneckloth
patent: 3116371 (1963-12-01), Krasin
patent: 3510584 (1970-05-01), Krasin et al.
patent: 3624300 (1971-11-01), Krasin et al.
patent: 3781483 (1973-12-01), Deisch
patent: 3902017 (1975-08-01), Steward

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