Telephone system

  • US 4,706,275 A
  • Filed: 11/13/1985
  • Issued: 11/10/1987
  • Est. Priority Date: 11/13/1985
  • Status: Expired due to Term
First Claim
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1. A unique method for making telephone calls from any available telephone, said method comprising the steps of:

  • (a) obtaining a special code by depositing a prepayment amount;

    (b) storing the prepayment amount in a memory in a special exchange for use in verifying calling party calls;

    (c) dialing said special exchange when a telephone call connection is desired;

    (d) inputting such special code for verification;

    (e) inputting the number of the called party;

    (f) verifying the special code and comparing the prepayment amount less any deduction for previous calls in the memory and the minimum cost of the inputted call;

    (g) connecting called party to the calling party in response to the verification;

    (h) monitoring the prepayment amount less deductions for the running cost of the call; and

    (i) disconnecting said call when the prepayment amount has been spent.

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