Question: In a Policy and Charging Control (PCC) architecture, when both time and volume thresholds are set for usage monitoring of an IP-CAN session, what triggers the PCEF/TDF to report accumulated usage to the PCRF?
Option 1: Either the time threshold or the volume threshold is reached.
Option 2: Both the time and volume thresholds must be reached simultaneously.
Option 3: The PCEF/TDF reports at regular intervals regardless of thresholds.
Option 4: Only when a new service data flow is added to the IP-CAN session.
Explanation: According to usage monitoring control specifications, if both time and volume thresholds are provided to the PCEF or TDF, the accumulated usage since the last report shall be reported when either the time or the volume thresholds are reached. This allows for flexible and dynamic policy decisions based on real-time network usage, ensuring efficient management of network resources.