Question: In IOPS (Isolated Operation for Public Safety) mode, how are related packets (signaling and media) of an MCPTT (Mission Critical Push To Talk) group call typically distributed to discovered MC users by the IOPS MC connectivity function?
Option 1: Exclusively over dedicated unicast connections for each MCPTT UE.
Option 2: Solely via traditional circuit-switched voice bearers.
Option 3: Either over MBMS (Multimedia Broadcast Multicast Services) bearers or replicated and distributed via unicast transmissions to associated MCPTT UEs.
Option 4: Directly peer-to-peer without involving the IOPS MC connectivity function.
Explanation: This is correct because, in the context of IOPS group calls using IP connectivity functionality, the IOPS MC connectivity function distributes group session packets (both signaling and media) to discovered MC users either efficiently through MBMS bearers for broadcast/multicast scenarios or by replicating and sending via unicast transmissions for targeted delivery to specific MCPTT UEs associated with the target group ID, accommodating different network conditions and user configurations.