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System, method and apparatus for supporting E911 emergency services in a data communications network

  • US 7,027,564 B2
  • Filed: 09/22/2003
  • Issued: 04/11/2006
  • Est. Priority Date: 09/22/2003
  • Status: Expired due to Term
First Claim
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1. A method of supporting enhanced 911 (E911) emergency services in a network access device, comprising:

  • (a) assigning a physical location identifier to an input port of the network access device;

    (b) transmitting an automatic report to an E911 database management system (DBMS) when a user device is coupled to said input port;

    (c) transmitting a unique device identifier of said user device to said E911 DBMS in response to a first query from said E911 DBMS; and

    (d) if said user device is a VoIP telephone, then transmitting said physical location identifier to said E911 DBMS in response to a second query from said E911 DBMS;

    whereby said E911 DBMS updates an automatic location identification database with said physical location identifier of said VoIP telephone.

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