Question: What is the primary purpose of the PRA-Remove AVP (AVP code 2846) in a Policy and Charging Control (PCC) context, specifically for 3GPP-EPS access type?
Option 1: To initiate reporting of new Presence Reporting Areas for an IP-CAN session.
Option 2: To modify the existing QoS parameters for an ongoing IP-CAN session.
Option 3: To request additional AVPs for enhanced presence reporting in an IP-CAN session.
Option 4: To stop the reporting of a list of Presence Reporting Area(s) for an IP-CAN session.
Explanation: The correct answer is Option 4 because, according to the specification, the PRA-Remove AVP is explicitly used to stop the reporting of one or more Presence Reporting Areas for an IP-CAN (IP Connectivity Access Network) session. This action is crucial in managing and updating presence information efficiently within telecom networks, ensuring that only relevant areas are reported on, thus optimizing network resources and performance.