Question: In an MCPTT (Mission Critical Push To Talk) scenario, when an IWF (InterWorking Function) floor participant sends a Floor Request message for a broadcast group call, what additional field must be included in the message?
Option 1: User ID field with the requesting LMR user's identifier (if privacy is not requested)
Option 2: Floor Indicator field indicating the relevant call type (e.g., broadcast group call)
Option 3: Message Type field set to '0' (Floor Request for Unicast Call)
Option 4: Source field set to '1' (indicating an external source)
Explanation: According to MCPTT specifications, when the floor request is for specific call types such as a broadcast group call, the Floor Request message must include a Floor Indicator field to indicate the relevant call type, ensuring proper handling and prioritization by the MCPTT floor control server.