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Fully automatic credit card calling system

  • US 5,845,205 A
  • Filed: 08/01/1997
  • Issued: 12/01/1998
  • Est. Priority Date: 06/02/1995
  • Status: Expired due to Fees
First Claim
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1. In a mobile cellular telephone having a key pad connected to a controller unit and a digital signal processor containing stored data and a tone detection unit, a method for using automatic credit card calling with the cellular telephone comprising the steps of:

  • Step 1 originating a call over a telephone network for the calling card service provider using a previously stored calling card service provider access number;

    Step 2 sending the telephone number to the service provider;

    Step 3 activating the tone detection digital signal processing procedure and awaiting a tone signal response from the service provider to verify whether the desired telephone number is correct;

    Step 3A terminating the telephone call if an incorrect response is received;

    Step 4 sending the calling card number to the telephone network;

    Step 5 activating a tone detection digital signal processing procedure and awaiting a tone signal response from the service provider to verify whether the calling card number is correct;

    Step 5A terminating the telephone call if an incorrect response is received in Step 5;

    Step 6 automatically proceeding with the calling card call when all the telephone credit card call information has been determined to be correct.

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