Question: In a scenario where Incoming Call Barring (ICB) is active for a target in a telecom network, what type of Lawful Interception (LI) records are typically generated when the barring condition is triggered?
Option 1: Only IRI-REPORT records are generated to indicate the barring condition.
Option 2: Both IRI-END records with applicable cause values and IRI-REPORT records may be generated, depending on the call scenario.
Option 3: No LI records are generated for ICB events to maintain subscriber privacy.
Option 4: An immediate IRI-SUSPEND record is sent to temporarily hold the interception.
Explanation: When ICB is active, the network's response varies based on whether the target initiates or receives a call. For an incoming call, typically an IRI-REPORT record is generated before access determination. If the call were to proceed, an IRI-END record would be generated with a cause value. In scenarios where the target calls a party with ICB active, since the call setup has progressed further, an IRI-END record with an applicable cause value is generated when the ICB condition is encountered, indicating the end of the intercepted session due to barring. Thus, both types of records (IRI-REPORT and IRI-END) may be generated depending on the call scenario.