Question: In an IMS network, when a User Equipment (UE) receives an incoming session split across multiple Access Legs and wants to invoke the Communication Diversion (CDIV) service, what is the valid action for the UE to take?
Option 1: The UE must invoke CDIV on all Access Legs simultaneously.
Option 2: The UE may use any one of the Access Legs to invoke the CDIV service.
Option 3: The UE cannot invoke CDIV until all Access Legs are merged into a single session.
Option 4: Invoking CDIV is only possible on the primary Access Leg designated by the network.
Explanation: This is correct because, according to IMS service continuity principles, flexibility in handling multiple access legs is crucial. By allowing the UE to invoke CDIV on any one of the Access Legs, the system accommodates diverse user scenarios and network conditions, ensuring seamless service continuity. This approach also aligns with efficient resource management, as it doesn’t necessitate simultaneous actions across all legs or a specific primary leg for diversion requests.