Remotely connectable maintenance termination unit

Details Remotely connectable maintenance termination unit Remotely connectable maintenance termination unit

1994-12-27

1996-06-04

Chin, Stephen

Telephonic communications

Diagnostic testing, malfunction indication, or electrical...

Including fault responsive disconnection of tested component

375 29, 375 30, H04N 124, H04N 308, H04N 322

Patent

active

055240437

ABSTRACT:
Disclosed is a circuit which permits a customer to be disconnected from a telecommunications network for testing purposes. The circuit includes a pair of switching means coupled to the tip and ring conductors of the network, and a pair of relay contacts coupled in parallel with respective switching means. The relay contacts are operated by a relay coil also coupled to the tip and ring conductors so that the switching means can be bypassed as the result of a remote signal from the network.

REFERENCES:
patent: 4462058 (1984-07-01), Ziegler
patent: 4626632 (1986-12-01), Mazz
patent: 4653084 (1987-03-01), Ahuja
patent: 4807277 (1989-02-01), Perry
patent: 4852145 (1989-07-01), Bevers et al.
patent: 5392327 (1995-02-01), Galpin

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