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Call error prevention

  • US 20040179673A1
  • Filed: 03/12/2004
  • Published: 09/16/2004
  • Est. Priority Date: 03/12/2003
  • Status: Active Grant
First Claim
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1. A call error prevention method, said method comprising the steps of:

  • inputting a call number;

    checking whether the input number is a recognizable call service code;

    determining whether the input number contains the same number of digits as a recognized call service code; and

    generating an input error warning if the input number does not contain the same number of digits as the recognized call service code.

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