Question: In an Enhanced MSC Server for IMS Centralized Services (ICS) support, what is the primary purpose of generating and including an IMS Charging Identifier (ICID) in Call Detail Records (CDRs)?
Option 1: To enable correlation between CS domain charging and IMS network elements for voice/video calls.
Option 2: To authenticate User Equipment (UE) location for security enhancements.
Option 3: To prioritize traffic based on the type of voice/video call being made.
Option 4: To bill data services separately from voice services.
Explanation: The ICID is crucial for correlating charging records between the Circuit Switched (CS) domain and IMS network elements, especially in scenarios where session setup involves both domains. This ensures accurate and unified billing for ICS-supported voice/video calls, highlighting the importance of correlation in inter-domain charging scenarios.