| 摘要 |
In a cellular telecommunications network, a method, system and corresponding Mediation Device (MD) for interfacing an Intercept Functionality (IF) of a cellular telecommunications network with at least a Law Enforcement Agency (LEA) monitoring an intercept subject. The MD comprises a mapping table for associating an LEA case identity for identifying the intercept subject in the LEA with a local case identity used in communications between the MD and the IF. The LEA requests the monitoring of the intercept subject by sending a monitoring request having the LEA case identity to the MD, which assigns a local case identity for designating the intercept subject and relays the monitoring request, having the local case identity, to the IF. Upon receipt of the monitoring request, the IF sets-up the monitoring of the intercept subject. When the desired monitored information is detected by an Access Function (AF) of the IF, it is relayed by the Delivery Function (DF) of the IF to the MD in the form of a message also comprising the local case identity. The MD receives the message, extracts the local case identity, and maps it to the LEA case identity, and to LEA routing information associated therewith, and transmits a second message having the same monitored information, using at least one of the LEA case identity and the LEA routing information.
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