METHOD AND APPARATUS FOR EMERGENCY SERVICES NUMBER ALERTING IN AN INTERNET PROTOCOL NETWORK
First Claim
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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Accused Products
Abstract
A method and apparatus for identification of emergency conditions present at a given geographic location of an Internet Protocol (IP) based device and the subsequent appropriate alerting of an Emergency Services Notification (ESN) telephone number. The method and apparatus serve to monitor an IP packet flow from an IP telephony device and sense a datagram within the packet flow corresponding to an ESN dialing sequence. Upon sensing the ESN dialing sequence, the normal call packet flow is interrupted while IP-based call set-up information is returned as though a normal IP-based call were placed. An ESN call server is then alerted of the ESN dialing sequence and functions to forward the IP packet flow to a Public Safety Answering Point (PSAP) appropriate to the IP telephony device along with location information corresponding to a civic address at which the IP telephony device is located.
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Citations
22 Claims
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1. A method of emergency alerting within an Internet Protocol (IP) network, said method comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus for emergency alerting within an Internet Protocol (IP) network, said apparatus comprising:
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an Emergency Services Notification (ESN) enabling device that monitors an IP packet flow from one or more IP telephony devices and senses a datagram within said packet flow corresponding to an ESN dialing sequence, said ESN enabling device interrupts normal call flow from said IP telephony device to an IP telephony service provider when said ESN dialing sequence is sensed and returns normal call set-up information to said IP telephony device; and an ESN call server located remote from said ESN enabling device, said ESN call server accepts notification from said ESN enabling device that said ESN dialing sequence has been sensed and forwards via a communications channel 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. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification