Telephonic communications – Supervisory or control line signaling – Signal reception at substation
Patent
1989-09-18
1991-08-13
Dwyer, James L.
Telephonic communications
Supervisory or control line signaling
Signal reception at substation
379387, 379 94, 379 95, H04M 300
Patent
active
050402099
ABSTRACT:
A control system for use in a conventional telecommunications system comprising a common telephone line to which plural telephones may be connected. The line is arranged to carry plural series of electrical ring-initiating signals, each for a respective one of plural telephone numbers serviced by the line. The control system comprises plural controllable ports and a controller. Each of the ports is associated with a respective one of the series of ring-initiating signals and is arranged to have a telephone and/or some auxiliary device, e.g., FAX machine, answering machine, computer, etc., connected thereto. The controller is coupled to the line and the controllable ports and detects an analyzes each of the plural ring-initiating signals on the line and also monitors the status of the line, e.g., if there is a "busy signal", an "on-hook signal", an "off-hook signal", or other signal on it. Depending upon line conditions the system controls the ports to which the telephones or other devices are connected, e.g., it precludes the first of the ring-initiating signals from reaching any port, analyzes those signals and thereafter diverts the remaining ring-initiating signals of any particular series to the associated port while continuing to preclude the remaining signals from reaching the other ports.
REFERENCES:
patent: 4117270 (1978-09-01), Lesea
patent: 4560837 (1985-12-01), Carson et al.
patent: 4675899 (1987-06-01), Ahuja
patent: 4741024 (1988-04-01), Del Monte et al.
patent: 4782518 (1988-11-01), Mattley et al.
patent: 4850008 (1989-07-01), Berg et al.
patent: 4873716 (1989-10-01), Brady
patent: 4922529 (1990-05-01), Kiel
Adler Andrew
Greenberg Melvin B.
Sarley Donald J.
Dwyer James L.
Shehata M.
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