Telephonic communications – Call or terminal access alarm or control – At substation
Patent
1993-09-30
1995-09-05
Brown, Thomas W.
Telephonic communications
Call or terminal access alarm or control
At substation
379445, 379200, H04M 166
Patent
active
054486300
ABSTRACT:
A secure timed telephone switch apparatus for a telephone or telecommunication device wired to a telephone system circuit by at least one pair of wires, one wire being supplied with voltage. The apparatus includes a clock that may be set to provide a signal at predetermined times during a 24 hour period and during a 7 day period. A central processing unit programs and stores information for the predetermined times of the clock. A switch mechanism connected to the voltage supplied wire is responsive to the signal to switch between connection and disconnection of the telephone system circuit, the switch operably engaged with the clock and the central processing unit so that the telephone or telecommunication device will be disconnected and connected to the telephone system in response to the signal.
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Brown Thomas W.
Matar Ahmad F.
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