Lawful interception’s main task is to silently obtain network communications, giving access to intercepted traffic to lawful authorities for the purpose of data analysis and/or evidence.

Such data generally consist of signalling, network management information, or in fewer instances, the content of network communications.

If data cannot be obtained in real-time, the activity is referred to as access to retained data (data retention).

In normal circumstances, network operator is required to provide 3 different Handover Interfaces (HI) to Law Enforcement Monitoring Facilities (LEMF).

This is a standard requirement needed for successful data retrieval and analysis.