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Automatic routing and information system for telephonic services

DC CAFC
  • US 5,982,868 A
  • Filed: 06/06/1996
  • Issued: 11/09/1999
  • Est. Priority Date: 02/22/1993
  • Status: Expired due to Term
First Claim
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1. In a telephone network call processing system, a real-time method of identifying client service areas spatially containing a location corresponding to a caller-provided telephone number, the method comprising the steps of:

  • providing a predefined master list of telephone numbers with spatial coordinates indexed by telephone number, wherein the spatial coordinates correspond to locations of telephones associated with caller-provided telephone numbers;

    providing a file of client service areas of substantially any desired shape and size, wherein each service area is geographically defined by spatial coordinates and indexed by spatial coordinate windows, and wherein each service area includes a service location;

    indexing a caller-provided telephone number in the master list of telephone numbers to obtain a selected spatial coordinate corresponding to the location of the caller-provided telephone number;

    indexing the selected spatial coordinate in a spatial coordinate window index of the client service areas file to generate a potential list of service locations whose service area potentially contain the location corresponding to the caller-provided telephone number;

    determining which service areas spatially overlap the location corresponding to the caller-provided telephone number; and

    generating a list of service locations whose service areas contain the location corresponding to the caller-provided telephone number.

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