Question: Upon receiving a Floor Release message from the floor participant, what action(s) does the floor participant interface toward the MCPTT client take?
Option 1: It transitions to the 'P: no permission' state and sends an acknowledgement to the MCPTT client.
Option 2: It sends the Floor Release message to the floor control server interface and remains in the 'P: has permission' state.
Option 3: It ignores the message if the MCPTT client is not in an active call.
Option 4: It requests re-authentication from the MCPTT client before proceeding.
Explanation: This correct answer reflects the proper handling of a Floor Release message as per the specified telecom protocol. By sending the Floor Release message to the floor control server interface, the system ensures seamless communication and state management between different components. Remaining in the 'P: has permission' state after releasing the floor is crucial for maintaining the participant's status correctly, especially since releasing the floor doesn't necessarily imply a loss of permission to speak. This nuanced understanding highlights the importance of precise state management in mission-critical communications like MCPTT.