Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of subscriber loop or terminal
Patent
1985-07-10
1987-03-24
Schreyer, Stafford D.
Telephonic communications
Diagnostic testing, malfunction indication, or electrical...
Testing of subscriber loop or terminal
307252B, H04B 346
Patent
active
046530843
ABSTRACT:
A solid state remotely actuable switch is described for testing and remotely disconnecting a circuit. In one embodiment, a solid state bilateral switch such as a triac is connected in series with the remote circuit, and a trigger device such as a diac is connected between the gate of the triac and the remote circuit. The switch is placed within the tip and ring line of a telephone circuit for remotely disconnected the telephone subscriber's side for testing the remote circuit. In a second embodiment, a remotely actuable switch includes a field effect transistor connected in series with each tip and ring circuit, a resistance-capacitance time-constant circuit for energizing the FETs and a discharging means for discharging the capacitor of the resistance-capacitance circuit in response to the control signal from the central office. Various devices for disconnecting subscriber circuits are disclosed.
REFERENCES:
patent: 3916111 (1985-10-01), Ott
patent: 4021617 (1977-05-01), Jones, Jr. et al.
patent: 4052624 (1977-10-01), Hamstra
patent: 4054942 (1977-10-01), Chambers, Jr.
patent: 4056694 (1977-11-01), Brolin
patent: 4079205 (1978-03-01), Glenn
patent: 4099031 (1978-07-01), Proctor et al.
patent: 4149040 (1979-04-01), Atkinson
patent: 4209667 (1980-06-01), Simokat
patent: 4221935 (1980-09-01), Barsellotti et al.
patent: 4293737 (1981-10-01), Cepelinski
patent: 4310723 (1982-01-01), Svala
patent: 4323799 (1982-04-01), King et al.
patent: 4324953 (1982-04-01), Simokat
patent: 4331838 (1982-05-01), Simokat
patent: 4373121 (1983-02-01), Sartori et al.
patent: 4396809 (1983-08-01), Brunssen
patent: 4403115 (1983-09-01), Simokat
patent: 4438299 (1984-03-01), Tomin
patent: 4445001 (1984-04-01), Bertoglio
patent: 4489221 (1984-12-01), Walker et al.
patent: 4529847 (1985-07-01), DeBalko
General Electric, published by Prentice Hall Inc., N.J., "SCR Manual Sixth Edition", pp. 435-436.
Bell Laboratories Record, "Switching to Solid State Relays", pp. 31-37, published in Feb. or 1978.
Disclosure Document No. 119121, filed Jul. 27, 1983 for "Maintenance Termination Unit" (per Bell Pub.: 55022).
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