Emergency services for packet networks
First Claim
1. A method of controlling access to an emergency service, comprising:
- receiving at least one call setup request from at least one originating device;
determining whether a received call setup request is received from a user who is authorized to initiate a call to the emergency service;
selecting a priority level from a plurality of priority levels for the call setup request;
inserting at least one indication of the determination and the selected priority level into the call request; and
forwarding the call request including the at least one indication toward at least one terminating device associated with the emergency service, wherein at least one of the originating devices or terminating devices resides on a packet network.
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Accused Products
Abstract
The present invention provides a technique for facilitating emergency services via packet networks. Emergency service providers will implement emergency proxies to ensure that proper call setup requests for emergency services are forwarded to the appropriate entities, even if those entities are in overload conditions. The emergency proxies may authenticate and filter call setup requests to ensure that only proper call setup requests are forwarded to help prevent such overload conditions. The emergency proxies may operate solely in a packet network, as well as at the interface between a packet network and a circuit-switched network to assist in call setup requests originating from either the packet network or the circuit-switched network.
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Citations
20 Claims
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1. A method of controlling access to an emergency service, comprising:
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receiving at least one call setup request from at least one originating device; determining whether a received call setup request is received from a user who is authorized to initiate a call to the emergency service; selecting a priority level from a plurality of priority levels for the call setup request; inserting at least one indication of the determination and the selected priority level into the call request; and forwarding the call request including the at least one indication toward at least one terminating device associated with the emergency service, wherein at least one of the originating devices or terminating devices resides on a packet network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for controlling access to an emergency service, comprising:
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at least one communication interface; and a control system associated with the at least one communication interface and configured to; receive at least one call setup request from at least one originating device; determine whether a received call setup request is received from a user who is authorized to initiate a call to the emergency service; select a priority level from a plurality of priority levels for the call setup request; insert at least one indication of the determination and the selected priority level into the call request; and forward the call request including the at least one indication toward at least one terminating device associated with the emergency service, wherein at least one of the originating devices or terminating devices resides on a packet network. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A non-transitory computer-readable medium carrying software for controlling access to an emergency service, the software comprising instructions executable by a processor to:
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receive at least one call setup request from at least one originating device; determine whether a received call setup request is received from a user who is authorized to initiate a call to the emergency service; select a priority level from a plurality of priority levels for the call setup request; insert at least one indication of the determination and the selected priority level into the call request; and forward the call request including the at least one indication toward at least one terminating device associated with the emergency service; wherein at least one of the originating devices or terminating devices resides on a packet network. - View Dependent Claims (19, 20)
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Specification