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Cellular radiotelephone with dialed number analysis

  • US 6,021,335 A
  • Filed: 05/02/1996
  • Issued: 02/01/2000
  • Est. Priority Date: 02/24/1994
  • Status: Expired due to Term
First Claim
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1. A method of operating a portable cellular telephone to originate a call, said portable cellular telephone having a keypad and said method comprising the steps of:

  • identifying, within said portable cellular telephone, the entry of earlier and later dialed digits at said portable cellular telephone keypad, said earlier digit being dialed prior to said later digit;

    determining if said portable cellular telephone is roaming while the digits are beings dialed;

    determining, at said portable cellular telephone in response to a numeric value of said earlier digit and in further response to the determination as to whether said portable cellular telephone is roaming, whether said later digit is a final digit of a phone number; and

    automatically transmitting an origination message from said portable cellular telephone when said later digit is said final digit of said phone number, said origination message conveying said phone number to a telecommunication network.

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