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Integrated calling directory

  • US 4,734,931 A
  • Filed: 03/21/1986
  • Issued: 03/29/1988
  • Est. Priority Date: 03/21/1986
  • Status: Expired due to Term
First Claim
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1. In a business communication system which serves a plurality of terminal devices, each of which is connected to the business communication system by an associated port circuit, said business communication system including at least one centralized calling directory file for storing a list of called parties and their telephone numbers, calling directory apparatus associated with one of said terminal devices for automatically originating a call through said business communication system to a called party designated by a user at said one terminal device comprising:

  • processing means;

    means interposed between said one terminal device, its corresponding port circuit and also connected to said processing means for connecting said processing means to both said port circuit and said one terminal device;

    calling directory file means in said processing means for storing a list of called parties and their associated telephone numbers;

    means in said processing means responsive to said user entering the name of said called party into said one terminal device for sequentially scanning said calling directory file means and said centralized calling directory using said name of the called party to obtain the telephone number of said called party;

    means in said processing emans for originating a communication connection to said called party via said connecting means in response to said scanning means locating the name of said called party;

    adjunct processing means conntect to said business communication system via one of said port circuits for storing a centralized list of called parties and their associated telephone numbers;

    means in said originating means responsive to said scanning means failing to locate an entry in said calling directory file means corresponding to said name of the called party for establishing a communication connection to said adjunct processing means via said connecting means; and

    means in said originating means responsive to said communication connection for querying said adjunct processing means to obtain the telephone number associated with said name of the called party from said centralized list.

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