Emergency call service termination
First Claim
1. A communication network comprising:
- a device configured to place a call for an emergency service;
a call processing system in communication with the device and configured to receive and process the call to route the call to a public service answering point (PSAP), initiate a location determination process, and terminate the call;
a location provisioning system configured to execute the location determination process to determine a location of the device and provide an emergency service key for the call to the call processing system and the PSAP, wherein the location provisioning system comprises a plurality of redundant sub systems configured to determine the location of the device and share a pool of keys;
a first sub system of the plurality of redundant sub systems configured to select a first key from the shared pool of keys to provide as the emergency service key, wherein the selection of the first key from the shared pool of keys restricts the first key from the shared pool of keys for subsequent use by the first sub system and a second sub system of the plurality of redundant sub systems;
the call processing system configured to communicate with only the first sub system of the plurality of redundant sub systems to initiate the location determination process and communicate with the first sub system and the second sub system of the plurality of redundant sub systems to terminate the call; and
in response to the communication from the call processing system to terminate the call, the first sub system and the second sub system are configured to release the first key back into the shared pool of keys for subsequent use.
3 Assignments
0 Petitions
Accused Products
Abstract
A communication network comprises a device configured to place a call for an emergency service, a call processing system in communication with the device and configured to receive and process the call to route the call to a public service answering point (PSAP), initiate a location determination process, and terminate the call, and a location provisioning system configured to execute the location determination process to determine the location of the device, wherein the location provisioning system comprises a plurality of sub systems, and wherein the call processing system communicates with only a first sub system of the plurality of sub systems to initiate the location determination process and communicates with the first sub system and a second sub system of the plurality of sub systems to terminate the call.
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Citations
18 Claims
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1. A communication network comprising:
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a device configured to place a call for an emergency service; a call processing system in communication with the device and configured to receive and process the call to route the call to a public service answering point (PSAP), initiate a location determination process, and terminate the call; a location provisioning system configured to execute the location determination process to determine a location of the device and provide an emergency service key for the call to the call processing system and the PSAP, wherein the location provisioning system comprises a plurality of redundant sub systems configured to determine the location of the device and share a pool of keys; a first sub system of the plurality of redundant sub systems configured to select a first key from the shared pool of keys to provide as the emergency service key, wherein the selection of the first key from the shared pool of keys restricts the first key from the shared pool of keys for subsequent use by the first sub system and a second sub system of the plurality of redundant sub systems; the call processing system configured to communicate with only the first sub system of the plurality of redundant sub systems to initiate the location determination process and communicate with the first sub system and the second sub system of the plurality of redundant sub systems to terminate the call; and in response to the communication from the call processing system to terminate the call, the first sub system and the second sub system are configured to release the first key back into the shared pool of keys for subsequent use. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of operating communication network, the method comprising:
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in a device, placing a call for an emergency service; in a call processing system in communication with the device, receiving and processing the call to route the call to a public service answering point (PSAP), initiating a location determination process, and terminating the call; in a location provisioning system, executing the location determination process to determine the location of the device and provide an emergency service key for the call to the call processing system and the PSAP, wherein the location provisioning system comprises a plurality of redundant sub systems configured to determine the location of the device, and wherein a first sub system and a second subsystem of the plurality of redundant sub systems share a pool of keys; in the first sub system of the plurality of redundant sub systems, selecting a first key from the shared pool of keys to provide as the emergency service key, wherein selecting the first key from the shared pool of keys restricts the first key from the shared pool of keys for subsequent use by the first sub system and the second sub system of the plurality of redundant sub systems; in the call processing system, communicating with only the first sub system of the plurality of redundant sub systems to initiate the location determination process and communicating with the first sub system and the second sub system of the plurality of redundant sub systems to terminate the call; and in the first sub system and the second sub system, releasing the first key back into the shared pool of keys for subsequent use in response to the communication from the call processing system to terminate the call. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification