Weatherproof telephone network interface modules

Details Weatherproof telephone network interface modules Weatherproof telephone network interface modules

1992-04-10

1994-03-01

Dwyer, James L.

Telephonic communications

Subscriber line or transmission line interface

379412, 379387, 379437, 379419, 379438, 379445, 439133, 439709, 439712, 439716, 439718, H04M 900

Patent

active

052915530

ABSTRACT:
A weatherproof network interface module for providing connection between a customer's equipment and the telephone company owned portion of the customer loop includes an overvoltage protection device disposed therein in addition to the circuitry which provides a prescribed line test termination impedance having particular characteristic signature to the telephone central office when a continuity test is made on a subscriber line and may include an illumination device and test switch for indicating when the telephone company owned portion of the customer loop is in operating order, or may include a device for connecting or disconnecting the telephone company owned portion of the customer loop from the customer loop portion wherein all of terminals are weatherproof (protected from the environment).

REFERENCES:
patent: 4636588 (1987-01-01), Nakayama
patent: 4809323 (1989-02-01), Collins
patent: 4853960 (1989-08-01), Smith
patent: 4860350 (1989-08-01), Smith

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