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Method of displaying caller identification for abandoned call in key-phone system

  • US 5,859,903 A
  • Filed: 12/26/1996
  • Issued: 01/12/1999
  • Est. Priority Date: 12/26/1995
  • Status: Expired due to Fees
First Claim
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1. A caller identification display method in a key phone system including a key service unit and a plurality of extension line subscriber terminals, said method comprising the steps of:

  • generating a ring signal from said key service unit to a designated extension line subscriber terminal in response to reception of an incoming call from an office line;

    registering caller identification information contained in said ring signal during a pause period of said ring signal, in a memory;

    after said caller identification information is registered in said memory, requesting a password from a subscriber from the designed extension line subscriber terminal for access to said caller identification information registered in said memory, when a caller identification key is input from the designated extension line subscriber terminal; and

    when the password input from the designated extension line subscriber terminal is accepted by said key service unit, providing a visual display of registered caller identification information on the designated extension line subscriber terminal.

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