Question: Upon receiving a floor request from an authorized MCPTT (Mission Critical Push To Talk) floor participant, what action does the IWF (Interworking Function) floor control server take regarding the previously granted MCPTT floor participant?
Option 1: Sends a Floor Granted message with timer T2 value, granted priority, and potentially Track Info, then transitions to 'G: Floor Released' state.
Option 2: Sends a Floor Request Acknowledgement without additional fields, then immediately releases the floor.
Option 3: Ignores the new request until the current participant's timer T2 expires, staying in the 'G: Floor Taken' state.
Option 4: Directly sends a Floor Denied message to all participants except the new requester.
Explanation: When the IWF floor control server receives a floor request from an authorized MCPTT participant, it manages the transition of floor control. It informs the currently granted participant that their time is ending (via the Floor Granted message with specific details like timer T2 value for 'Stop talking', the priority level, and any relevant Track Info). The server remains in the 'G: Floor Taken' state, indicating the floor is still occupied during this transition, ensuring orderly management of the push-to-talk feature, critical in mission-critical communications.