Question: What is the primary purpose of the Single Radio Voice Call Continuity (SRVCC) feature in a User Equipment (UE), as related to IMS calls?
Option 1: To enable simultaneous transmission/reception on both PS and CS access networks.
Option 2: To provide seamless handover of voice calls between PS and CS domains for IMS-anchored calls when the UE can only use one access network at a time.
Option 3: To enhance data transfer speeds during voice calls in LTE networks.
Option 4: To facilitate video call continuity across different radio access technologies.
Explanation: SRVCC is designed to ensure uninterrupted voice service for IMS-anchored calls by seamlessly transferring the call between packet-switched (PS) and circuit-switched (CS) domains, specifically in scenarios where the UE can only transmit/receive on one of these networks at any given time. This feature is crucial for maintaining call continuity as users move between areas covered by different types of access networks (e.g., from LTE to UTRAN), especially when the UE's capability is limited to single radio transmission/reception at a time.