Question: Upon receiving a Floor Idle message from the floor control server with the G-bit set to '1' (Dual Floor) and an indication of a participant being overridden without revoke, what actions does the IWF floor control server take towards the MCPTT client?
Option 1: a. Sends Floor Request message to all participants. b. Enters 'U: not permitted and Floor Idle' state. c. Removes override indication and stays in 'U: permitted state'.
Option 2: a. Ignores the Floor Idle message. b. Sends Acknowledgement without action. c. Enters 'U: permitted state' without conditions.
Option 3: a. Sends Floor Idle message to the associated floor participant. b. Removes the indication that a participant is overridden without revoke. c. Remains in 'U: permitted state'.
Option 4: a. Sends Floor Grant message to another participant. b. Enters 'U: not permitted' state solely. c. Keeps the override indication unchanged.
Explanation: This is the correct sequence of actions as per the specified conditions (G-bit set to '1' for Dual Floor and an indication of a participant being overridden without revoke). The IWF floor control server responds by notifying the affected participant, clears the override status, and maintains the 'U: permitted state' to ensure continuous functionality without unnecessary state changes. This aligns with efficient floor control management in MCPTT systems interworking with LMR.