Telephone network interface apparatus

Details Telephone network interface apparatus Telephone network interface apparatus

1989-09-13

1990-07-31

Ng, Jin F.

Telephonic communications

Subscriber line or transmission line interface

361356, 379412, H04M 900

Patent

active

049455605

ABSTRACT:
Telephone network interface apparatus including an enclosure providing a splice chamber for receiving a telephone network cable including a plurality of incoming telephone lines, and providing a terminal chamber having a plurality of telephone terminals mounted therein; a plurality of individual, replaceable subscriber line interface modules are mounted on the enclosure, each module includes an interface jack, a subscriber wiring bridge including a pair of subscriber terminals, an interface plug connected to the subscriber terminals for being removably received within the interface jack, and each module provides an internal space for receiving a telephone circuit, the interface jack is for being connected to one of the telephone terminals and thereby to one of the incoming telephone lines and the subscriber terminals are for being connected to a subscriber premises line, upon the interface plug being removed from the interface jack a demarcation point being provided between the one telephone line and the subscriber premises line whereby the plug of an operating telephone may be plugged into the interface jack to facilitate determination of whether a fault exists on the incoming telephone line or the subscriber premises line.

REFERENCES:
patent: 4575169 (1986-03-01), Duplatre et al.
patent: 4658422 (1987-04-01), Sparks
patent: 4712232 (1987-12-01), Rodgers
patent: 4731501 (1988-03-01), Clark et al.
patent: 4749359 (1988-06-01), White
patent: 4782427 (1988-11-01), Marks
"SNI-5000", Keptel, Ocean, NJ, Oct. 1985, [379-399].
"ML-5", Keptel, Ocean, NJ, Apr. 1986, [379-399].

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