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Method of registering identification number in personal communication terminal

  • US 5,386,468 A
  • Filed: 07/09/1993
  • Issued: 01/31/1995
  • Est. Priority Date: 09/14/1992
  • Status: Expired due to Term
First Claim
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1. A method of registering an identification number in a personal communication terminal to enable it to access communications services provided by a carrier, comprising the steps of:

  • a) storing a first key in a secret manner into the personal communication terminal before the communication terminal is sold to a user;

    b) receiving an identification number encrypted with a second key associated with the first key from the carrier, after the personal communication terminal is sold to the user;

    c) decrypting the encrypted identification number in a secret manner within the personal communication terminal by using the first key from the carrier; and

    d) storing the decrypted identification number in a secret manner into the personal communication terminal, wherein the step a) includes the substeps of;

    i) inputting manufacturer application information to manufacturer equipment;

    ii) transmitting the input manufacturer application information from the manufacturer equipment to carrier equipment;

    iii) automatically generating the first key corresponding to the manufacturer information in the carrier equipment;

    iv) automatically transmitting the generated first key from the carrier equipment to the manufacturer equipment; and

    v) automatically storing the first key received from the carrier equipment into the personal communication terminal, in the manufacturer equipment.

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