Question: During an MCPTT media session, how can an Interworking Function (IWF) distinguish between RTP media packets received from multiple sources when dual floor control is applied?
Option 1: By analyzing the payload type in the RTP header
Option 2: Through explicit signaling from the floor control server
Option 3: Based on the destination IP address of the RTP packets
Option 4: Using the Synchronization Source Identifier (SSRC) in the received RTP media packets
Explanation: In the context of RTP, the SSRC is a unique identifier for each source of RTP streams within an RTP session. When dual floor control is applied and multiple sources are sending RTP media packets, the IWF can utilize these unique identifiers to differentiate between the various sources, ensuring proper handling of the incoming streams in the MCPTT media plane.