Lawfull call interception support
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorMarlene YARED
Life of this patent
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Abstract
Systems, methods and communication nodes according to exemplary embodiments provide for an IMS node to replicate call content for lawful call interception in packet cable networks. A CSCF node sends a command to an SBC node to perform call content replication for an identified call to be intercepted. The SBC node forwards the replicated call content to a delivery function, which in turn forwards the replicated call content to the appropriate law enforcement agency.
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A method for call content lawful interception, comprising:
- downloading a service profile associated with a user by a call session control function (CSCF) node;
- modifying the service profile to include a lawful interception service trigger in response to the user being targeted for call content lawful interception;
- and
- responsive to identifying a call associated with the user, transmitting a message to a Session Border Controller (SBC) node, in accordance with the lawful interception service trigger, the message instructing the SBC node to replicate call content of the identified call.
A call session control function (CSCF) node comprising:
- a communication interface for downloading a service profile associated with a user;
- a processor for modifying the service profile to include a lawful interception service trigger in response to the user being targeted for call content lawful interception and, responsive to identifying a call associated with the user, for transmitting a message through the communication interface to a Session Border Controller (SBC) node, in accordance with the lawful interception service trigger, the message instructing the SBC node to replicate call content of the identified call.
Dependencies are inferred from the claim text.