Question: In a Mission Critical (MC) service, what is the primary purpose of utilizing an MBMS (Multimedia Broadcast Multicast Services) bearer to inform the status of a group communication when the group call is set up on unicast bearers?
Option 1: To prioritize voice packets over data packets in the network.
Option 2: To enable encryption for sensitive group communication metadata.
Option 3: To notify affiliated clients about an ongoing group call, aiding decisions for late entry or rejoin calls.
Option 4: To manage Quality of Service (QoS) parameters for individual users within the group.
Explanation: Utilizing MBMS for group status notification allows for efficient broadcast of the group's communication state to all affiliated clients, who can then decide whether to join an ongoing call or wait, aligning with the need for timely and resource-efficient information dissemination in mission-critical communications.