Question: What is the primary purpose of the IM CN Subsystem Signalling flag in a telecom network?
Option 1: To enable general-purpose IP connectivity for all User Equipment (UE)
Option 2: To indicate a dedicated EPS bearer for voice calls only
Option 3: To signal a dedicated PDP context/EPS bearer specifically for IMS signalling traffic
Option 4: To disable Policy and Charging Control functionality for IMS services
Explanation: The IM CN Subsystem Signalling flag distinguishes between general-purpose and dedicated signalling bearers, ensuring IMS signalling traffic receives necessary prioritization and resources through a dedicated PDP context/EPS bearer, vital for efficient network resource allocation and QoS management.