Question: Upon expiry of Timer T7 (Floor Idle) in an MCPTT call, and assuming Counter C7 (Floor Idle) has not reached its upper limit, what actions are taken by the IWF floor control server regarding the timer and messaging to participants?
Option 1: Restart Timer T7 and send a Floor Release message to all MCPTT floor participants.
Option 2: Stop Timer T7 and send a Floor Idle message to the current floor holder only.
Option 3: Restart Timer T7, increment Counter C7 by 1, and send a Floor Idle message to all MCPTT floor participants.
Option 4: Pause Timer T7 until a new floor request is received and then send a Floor Idle message to all participants.
Explanation: According to the specified behavior for the expiry of Timer T7 (Floor Idle), the IWF floor control server must restart the timer to continue monitoring the idle state, increment the counter to track occurrences, and notify all participants in the MCPTT call of the continued idle floor state via a Floor Idle message. This ensures that all parties are informed of the current floor status, preventing potential conflicts or misunderstandings about who has the floor.