Junctor checking system

Details Junctor checking system Junctor checking system

1978-08-14

1979-09-11

Robinson, Thomas A.

179 18AB, H04M 324, H04Q 124

Patent

active

041676564

ABSTRACT:
A junctor checking system for an electronic PABX which checks the potential of the junctor under control of a microprocessor. A voltage level sensing circuit is connected to the junctor to be checked; a resistor connects the input of the voltage level sensing circuit to a voltage source. In the event the impedance of the junctor to ground is not as expected with respect to at least one threshold, the junctor is considered faulty and a different idle junctor is selected.

REFERENCES:
patent: 3941949 (1976-03-01), Miller et al.

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