Question: What is a key requirement for multiple MC (Mission Critical) service clients to share an MC gateway UE simultaneously, when accessing the MC system via 3GPP connectivity?
Option 1: A unique relationship between MC service identities and corresponding media streams passing through the MC gateway UE.
Option 2: All MC service clients must utilize the same IMPU (IM Public User Identity) for authentication.
Option 3: Each MC service client must have its own dedicated 3GPP transport access credentials (e.g., UICC).
Option 4: The MC gateway UE must establish separate non-3GPP connectivity for each MC service client.
Explanation: This is correct because simultaneous sharing of an MC gateway UE by multiple MC service clients requires a unique relationship between the MC service identities used by the MC service clients and their corresponding media streams, ensuring proper routing and management of traffic for each client through the shared gateway.