Junctor checking system

Details Junctor checking system Junctor checking system

H - Electricity

04

M

344/1.2

H04M 3/24 (2006.01) H04M 3/32 (2006.01) H04Q 1/24 (2006.01)

Patent

CA 1093663

JUNCTOR CHECKING SYSTEM Abstract Of The Disclosure A junctor checking system for an electronic PABX which checks the potential of the junctor under control of a micropro- cessor. A voltage level sensing circuit is connected to the junctor to be checked a resistor connects the input of the volt- age level sensing circuit to a voltage source. In the event the impedance of the junctor to ground is not as expected with re- spect to at least one threshold, the junctor is considered faulty and a different idle junctor is selected.

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