Question: Upon receiving a Floor Revoke message in an MCPTT (Mission Critical Push To Talk) interworking scenario with LMR (Land Mobile Radio) systems, what actions must the IWF (InterWorking Function) floor participant take regarding RTP media packets and communication with the MCPTT server?
Option 1: Continue forwarding buffered RTP media packets to the MCPTT server and wait for a Floor Release message from the server.
Option 2: Discard any remaining buffered RTP media packets, stop forwarding encoded voice to the MCPTT server, and send a Floor Release message.
Option 3: Only discard remaining buffered RTP media packets without taking any further action with the MCPTT server.
Option 4: Send a Floor Request message instead of releasing the floor upon receiving the Floor Revoke message.
Explanation: This is the correct answer because, according to the specified behavior for handling a Floor Revoke message in an MCPTT-LMR interworking context, the IWF must immediately cease transmission activities (discard buffered RTP media packets and stop forwarding encoded voice) and then notify the release of the floor by sending a Floor Release message. This ensures orderly communication management and resource allocation within the mission-critical communication environment.