IP-based enhanced emergency services using intelligent client devices

  • US 7,440,442 B2
  • Filed: 10/21/2003
  • Issued: 10/21/2008
  • Est. Priority Date: 10/21/2003
  • Status: Active Grant
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First Claim
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1. A method of configuring a packet based phone for initiating an emergency call in a packet based network, comprising:

  • receiving an ERL record at a packet based phone, said ERL record being associated with the phone'"'"'s emergency response location;

    transmitting from the packet-based phone at least a portion of the ERL record as part of an emergency call setup process; and

    transmitting a first notification message to a monitoring station when a 911 call is placed by a phone;


    the monitoring station ensures that a corresponding notification message is received from a PSTN gateway, andthe monitoring station issues an alarm if it fails to receive the first notification message from the phone and the corresponding notification message from the PSTN gateway.

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