Pay telephone monitoring system

Details Pay telephone monitoring system Pay telephone monitoring system

1986-02-14

1988-04-05

Ng, Jin F.

Telephonic communications

Diagnostic testing, malfunction indication, or electrical...

Monitoring

379132, 379147, H04M 1702

Patent

active

047364440

ABSTRACT:
A passive, non-intrusive pay telephone monitoring system is disclosed for maintaining a talley of the amount of money present in a money box. A signal is sent over the line, interconnecting the pay telephone with its central office equipment when money in the box is collected by a collection agent, and the collected amount of money and the time of collection are then stored for verification of the collected amount.

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