Question: Which of the following scenarios triggers the Sx session modification procedure between TDF-C and TDF-U for a TDF in unsolicited reporting mode?
Option 1: Modification of PDN connection related parameters
Option 2: Modification of instructions for application detection and reporting
Option 3: Update of IP-CAN session related parameters
Option 4: Change in MME configuration
Explanation: According to the specifications, for a TDF (Traffic Detection Function) in unsolicited reporting mode, the Sx session modification procedure between TDF-C (Control Plane) and TDF-U (User Plane) is specifically executed when there are modifications to instructions for application detection and reporting. This highlights the importance of dynamic adjustments in traffic management and monitoring within telecom networks, ensuring that user plane functions align with evolving control plane directives.