Question: In an MCPTT (Mission Critical Push To Talk) system, when the IWF (InterWorking Function) floor control server enters the state 'U: not permitted but sends media', what action is taken regarding RTP (Real-time Transport Protocol) media packets from the MCPTT client?
Option 1: The IWF floor control server requests the network media interface to forward all RTP media packets to the media distributor immediately.
Option 2: The IWF floor control server starts buffering RTP media packets temporarily until further instructions.
Option 3: The IWF floor control server ignores RTP media packets but sends acknowledgments to the MCPTT client.
Option 4: The IWF floor control server does not request the network media interface to forward RTP media packets from the MCPTT client to the media distributor.
Explanation: This is correct because, according to the specified state's behavior, the floor control interface in the IWF floor control server shall not request the forwarding of RTP media packets from the MCPTT client to the media distributor when in the 'U: not permitted but sends media' state. This highlights an important aspect of media management in MCPTT systems, particularly in scenarios where floor control dictates the handling of real-time media traffic.