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US 8,027,333 B2Granted
IP-based enhanced emergency services using intelligent client devices
AssigneeHewlett-Packard Company
InventorsDavid Grabelsky, Michael Homeier, Anoop Tripathi, Boby Joseph
Life of this patent
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Abstract
Providing enhanced emergency services (E-911) to an IP Telephony-based PBX or similar system, by utilizing aspects of the intelligence of end-user SIP client devices to address challenges and difficulties associated with E-911-like services in LAN-based telephony environments.
Claims40
A method of configuring a packet based phone for initiating an emergency call in a packet based network, comprising:
- responsive to sending a request from the packet based phone to register for communication services in the packet based network, receiving at the packet based phone a registration response from the packet based network that includes an ERL record, said ERL record being associated with the phone's emergency response location;
- and
- transmitting from the packet-based phone at least a portion of the ERL record as part of an emergency call setup process.
A method of configuring a packet based phone for initiating an emergency call in a packet based network, comprising:
- responsive to receiving a request from the packet based phone to register for communication services in the packet based network, determining an ERL of the packet based phone;
- and
- transmitting to the packet based phone a registration response that includes a corresponding ERL record, said ERL record including parameters enabling the packet based phone to initiate an emergency 911 call.
Dependencies are inferred from the claim text.