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Coin telephone data port protection

  • US 5,978,460 A
  • Filed: 09/30/1997
  • Issued: 11/02/1999
  • Est. Priority Date: 09/30/1997
  • Status: Expired due to Term
First Claim
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1. A circuit package for installation in a coin telephone set having conductors extending to a remote central office and a jack for permitting a modem to complete a direct connection to said central office, comprising:

  • a. a switch adapted to isolate said jack from said central office conductors;

    b. a local battery;

    c. a circuit powered by said local battery for sensing when said modem is connected to said jack;

    d. an arrangement responsive to said battery powered circuit for operating said switch to connect said jack to said central office conductors;

    e. means operative when said switch has been operated to connect said jack to said central office for monitoring said conductors to detect the appearance of fraudulent usage conditions thereon.

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  • 7 Assignments
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