Question: In a multi-party call scenario with a single circuit-link for all call-legs, what is the primary purpose of the CC-Link-Identifier in Lawful Interception (LI) as per 3GPP security standards?
Option 1: To uniquely identify each call-leg's Communication Identity Number.
Option 2: To ensure backward compatibility with non-IP based handover interfaces.
Option 3: To correlate the Lawful Interception Identifier across different networks.
Option 4: To facilitate the delivery of CC for all call-legs over a single circuit-link.
Explanation: The CC-Link-Identifier is specifically utilized in scenarios where a single circuit-link is used to deliver the Content of Communication (CC) for all call-legs of multi-party calls, enabling the efficient management and delivery of intercepted communication content across multiple parties on the same link.