Communications link testing

Details Communications link testing Communications link testing

1990-02-22

1990-12-04

Schreyer, Stafford D.

Telephonic communications

Diagnostic testing, malfunction indication, or electrical...

Of centralized switching system

379 25, 379246, H04M 326

Patent

active

049759388

ABSTRACT:
Apparatus for testing communications links comprises a microprocessor 20 which causes each telephone number in a range of telephone numbers to be dialed through an exchange test input port (TA1-TA4) by dialers 31-34. Adaptors 41-4N are arranged for clamping to terminal blocks of (e.g.) an exchange main distribution frame. Once the exchange has set up a call scan driver 23 causes each output port of the MDF connected to the adaptors to be pulsed in turn. Detectors 31'-34' monitor the input ports TA1-TA4 for pulse presence to cause interrupt of the microprocessor 20. The microprocessor reads a count from the scan driver 23 which is forwarded to a computer 1 which correlates the telephone number dialed with a physical location (equipment number) of the output port.

REFERENCES:
patent: 4594480 (1986-06-01), Betton
patent: 4774721 (1988-09-01), Gift et al.

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