Question: In the context of mid-call interception for Lawful Interception in IMS (IP Multimedia Subsystem) sessions, which entity maintains the call state and generates the Interception Related Information (IRI)?
Option 1: LMISF (Lawful Interception Mediation and Signaling Function)
Option 2: CSCF (Call/Session Control Function)
Option 3: Delivery Function 2
Option 4: User Equipment (UE)
Explanation: In the specific scenario of mid-call interception for IMS sessions, the LMISF takes on the responsibility of maintaining the IMS call state and generating the IRI, differing from other scenarios where CSCF might play a similar role. This highlights the specialized function of LMISF in lawful interception contexts within IMS architecture.