Question: When an Interworking Function (IWF) sends a Floor Queue Position Request, what specific field value is included in the Track Info field of the Floor Ack message to indicate queueing capability?
Option 1: mc_priority fmtp attribute value
Option 2: lmr_queueing fmtp attribute value
Option 3: A randomly generated identifier for anonymity
Option 4: mc_queueing fmtp attribute value negotiated as specified in Queueing Capability
Explanation: In the context of MCPTT interworking with LMR systems, when an IWF initiates a request for floor queue position, it must inform the floor control server about its queueing capability. The mc_queueing fmtp attribute value is specifically negotiated and included in the Track Info field of the Floor Ack message to serve this purpose, ensuring seamless integration and management of floor control requests across different systems.