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Identification to a public safety answering point of the location of an emergency caller served by a PBX

  • US 7,035,381 B2
  • Filed: 02/05/2004
  • Issued: 04/25/2006
  • Est. Priority Date: 02/05/2004
  • Status: Expired due to Fees
First Claim
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1. A method for identifying to a public safety answering point the location within a campus from which a telephone call originates, where the campus uses a private business exchange to communicate with the public safety answering point, which private business exchange includes a port at which the origin and destination telephone numbers of each call are produced, said method comprising the steps of:

  • coupling at least said destination telephone numbers associated with each said call from said port of said private business exchange to a first computerized database, said first computerized database relating at least one of said destination telephone numbers to a particular emergency category;

    in response to at least those of said calls associated with a destination telephone number relating to said emergency category, addressing with said source telephone numbers a second database preloaded with information relating the source telephone numbers to the location of the source telephone, to thereby determine the location of said source telephone; and

    displaying to said public safety answering point at least the locations of those telephones which are the sources of calls addressed to telephone numbers associated with said emergency category.

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