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Pay telephone alarm and audit system

  • US 4,123,623 A
  • Filed: 10/22/1976
  • Issued: 10/31/1978
  • Est. Priority Date: 10/22/1976
  • Status: Expired due to Term
First Claim
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1. A money collection totaling system for loop start telephones having a coin tone generator and coin hopper passing coins into a coin vault with a vault switch operable by removal of a coin box therefrom, said tone generator being connected to a telephone cable pair to transmit tone bursts thereover according to the denomination of coins deposited through the hopper, and including;

  • a distinguishable signal generator means connected to the telephone cable pair and controlled by said vault switch to be energized thereby and to transmit a distinguishable signal thereover when said vault switch is operated, a discriminator means connected to the telephone cable pair and responsive to said distinguishable signal to produce an operational signal, memory means to be connected to an extension of the said cable pair remote from the telephone to record the tone bursts as information, and relay means in circuit with and actuated by the operational signal from the discriminator means to disconnect the said memory means from said remote cable pair when the vault switch is operated by removal of the coin box to store money collection information in said memory means.

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