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METHOD AND APPARATUS FOR EMERGENCY SERVICES NUMBER ALERTING IN AN INTERNET PROTOCOL NETWORK

  • US 20090207978A1
  • Filed: 02/20/2008
  • Published: 08/20/2009
  • Est. Priority Date: 02/20/2008
  • Status: Active Grant
First Claim
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1. A method of emergency alerting within an Internet Protocol (IP) network, said method comprising:

  • monitoring an IP packet flow from one or more IP telephony devices;

    sensing a datagram within said IP packet flow corresponding to an Emergency Services Notification (ESN) dialing sequence;

    upon sensing said ESN dialing sequence, interrupting normal packet flow from said IP telephony device to an IP telephony service provider;

    returning IP-based call setup information to said IP telephony device;

    notifying an ESN call server that said ESN dialing sequence has been sensed; and

    forwarding said IP packet flow to a Public Safety Answering Point (PSAP) appropriate to said IP telephony device along with location information corresponding to a civic address at which said IP telephony device is located.

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