Question: In Mission Critical Data (MCData) services utilizing pre-established MBMS bearers, what can optionally be separated from media packets on the MBMS bearer due to differing bearer characteristic requirements?
Option 1: User Equipment (UE) Authentication Signals
Option 2: Application Level Control Signalling (e.g., Transmission Control)
Option 3: MCData Service Announcements
Option 4: Group Management Updates for MCData Services
Explanation: In the context of MCData services using pre-established MBMS bearers, application level control signalling (such as transmission control signals) can have different bearer characteristic requirements compared to media packets. To accommodate these differences, the specification allows for the option to use a separate MBMS bearer solely for application level control signalling, ensuring efficient and reliable transmission of both types of data according to their specific needs.