Question: In an IMS network, when a User Equipment (UE) with multiple Access Legs acts as the transferee for Explicit Communication Transfer (ECT), on which of the following can the Service Centralization and Continuity (SCC) Application Server (AS) deliver the ECT request?
Option 1: Only on the primary Access Leg, as designated by the UE's initial IMS registration.
Option 2: On any of the UE's available Access Legs.
Option 3: Exclusively on the Access Leg with the ongoing session to be transferred.
Option 4: This is determined by the UE's location, with the request sent to the Access Leg associated with the nearest cell tower.
Explanation: The correct answer reflects the network's flexibility in managing multiple access paths for a single UE. By allowing the SCC AS to deliver the ECT request on any of the UE's available Access Legs, the IMS can efficiently utilize network resources and ensure seamless communication transfer regardless of the UE's connection setup, aligning with service continuity and centralized management principles in IMS architectures.