System for intercept of wireless communications
First Claim
1. A system for intercept of wireless communications, comprising:
- a home location register (HLR) including one or more surveillance flags associated with a subscriber served by the HLR, wherein the flag(s) indicate one or more aspects of the subscriber'"'"'s wireless communications are to be monitored;
a gateway delivery function unit for provisioning the surveillance flags, and receiving call associated information for a subscriber under surveillance, wherein the gateway delivery function unit functions to synchronize surveillance activities between a number of mobile switching centers (MSCs) and the HLR, such that only a selected subset of the MSCs connected to the HLR are monitored; and
a delivery function unit, provisioned by the gateway delivery function unit, receiving call associated information for intercepted call from the gateway delivery function unit, and call content from the MSC, and directing the call information and call content to a desired location such that the gateway delivery function unit provisions the delivery function unit according to the custom requirements of a court ordered wire tap.
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Accused Products
Abstract
A system for the intercept of wireless communications provides that a HLR of a wireless communications system includes one or more flags associated with each subscriber, and the HLR notifies an intercept server each time a call event is detected in the HLR for a subscriber under surveillance as indicated by the flags. The intercept server includes a Gateway Delivery Function module and one or more Delivery Function modules, wherein the Gateway Delivery Function module provisions the Delivery Function modules depending on the location of the suscriber, to deliver call content or data from an MSC to a collection function operated by a law enforcement agency. Non-call associated data is also provided to a Delivery Function module for delivery to a Collection Function.
33 Citations
18 Claims
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1. A system for intercept of wireless communications, comprising:
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a home location register (HLR) including one or more surveillance flags associated with a subscriber served by the HLR, wherein the flag(s) indicate one or more aspects of the subscriber'"'"'s wireless communications are to be monitored;
a gateway delivery function unit for provisioning the surveillance flags, and receiving call associated information for a subscriber under surveillance, wherein the gateway delivery function unit functions to synchronize surveillance activities between a number of mobile switching centers (MSCs) and the HLR, such that only a selected subset of the MSCs connected to the HLR are monitored; and
a delivery function unit, provisioned by the gateway delivery function unit, receiving call associated information for intercepted call from the gateway delivery function unit, and call content from the MSC, and directing the call information and call content to a desired location such that the gateway delivery function unit provisions the delivery function unit according to the custom requirements of a court ordered wire tap. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for intercept of wireless communications, comprising:
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call processing equipment in a mobile switching center reading one or more surveillance flags associated with a subscriber served by an HLR, wherein the flag(s) indicate one or more aspects of the subscriber'"'"'s wireless communications that are to be monitored;
receiving in a gateway delivery function unit call associated information sent by the switch in response to the reading of one or more of the surveillance flags, wherein the gateway delivery function unit functions to synchronize surveillance activities between a number of mobile switching centers (MSCs) and the HLR, such that only a selected subset of the MSCs connected to the HLR are monitored; and
the gateway delivery function unit provisioning a delivery function unit such that the gateway delivery function unit provisions the delivery function unit according to the custom requirements of a court ordered wire tap, wherein the delivery function unit receives the call associated information from the gateway delivery function unit, and call content from the switch and directs the call associated information call content to a desired destination. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification