Question: In the context of Lawful Interception (LI) for User-to-User Signalling (UUS) services, what happens if User-User information cannot be delivered from a target to another party due to network overload?
Option 1: The LEA is immediately notified of the delivery failure via a dedicated alert message.
Option 2: The undelivered User-User information is stored for later transmission when the network congestion clears.
Option 3: No notification is sent to the Law Enforcement Agency (LEA) regarding the failed delivery.
Option 4: An automated retry mechanism is triggered to attempt retransmission of the User-User information.
Explanation: This correct answer reflects the specified behavior in case of delivery failure due to network overload, emphasizing that no explicit notification is sent to the LEA in such scenarios. This highlights the importance of understanding the nuances of Lawful Interception protocols and their handling of potential network issues, ensuring that LEAs are aware of the limitations and potential gaps in information receipt.