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Apparatus and method for interfacing packet-based phone services with emergency call centers

  • US 7,369,530 B2
  • Filed: 01/30/2004
  • Issued: 05/06/2008
  • Est. Priority Date: 01/30/2004
  • Status: Expired due to Fees
First Claim
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1. A gateway device for a Public Safety Answering Point comprising:

  • a packet I/O interface configured for communicating with a packet-based network;

    a telephony I/O interface configured for communicating with a controller;

    a database I/O interface configured for communicating with a location database;

    packet protocol stacks configured for handling data packets;

    a TDM/Telephony signaling module configured for generating telephone signaling information and handling analog voice data;

    database protocol stacks for handling location database records; and

    an auxiliary information gateway application configured to use the packet protocol stacks and the TDM/Telephony signaling module to parse call session set-up information from a request packet and generate telephone signaling information therefrom,convert analog voice data to packetized voice data and direct the packetized voice data to the packet I/O interface, andconvert packetized voice data to analog voice data and direct the analog voice data to the telephony I/O interface.

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