Channel test unit

Details Channel test unit Channel test unit

1995-03-02

1997-10-14

Kuntz, Curtis

Telephonic communications

Diagnostic testing, malfunction indication, or electrical...

Including fault responsive disconnection of tested component

379 5, 379 29, 379 33, H04M 124, H04M 308, H04J 116, H04J 310

Patent

active

056779410

ABSTRACT:
Disclosed is a circuit included in a channel unit for testing that channel unit in a telecommunications system. A digital signal processor detects and reproduces signals from a local digital switch and controls a number of relays which result in various terminations appearing on the channel unit. The processor then monitors the signal levels as well as the signaling bits from the channel unit to test for proper performance.

REFERENCES:
patent: 4403320 (1983-09-01), Canniff
patent: 5018184 (1991-05-01), Abrams et al.
patent: 5054050 (1991-10-01), Burke et al.
patent: 5361293 (1994-11-01), Czerwiec

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