Question: In a scenario where a PCRF is deployed, how does the PCEF handle the default Access Profile QoS provided by the BBF AAA for an IP-CAN session?
Option 1: The PCEF enforces the default Access Profile QoS in conjunction with any dynamic QoS from the PCRF.
Option 2: The PCEF does not enforce the default Access Profile QoS; instead, it follows the default QoS instructions from the PCRF.
Option 3: The PCEF uses the default Access Profile QoS as a fallback if no dynamic QoS is received from the PCRF within a specified timeframe.
Option 4: The PCEF always enforces the default Access Profile QoS, regardless of the presence or instructions of a PCRF.
Explanation: According to the policy and charging control architecture, when a PCRF is deployed, it takes precedence over the BBF AAA for QoS management. Therefore, if a PCRF is present, the PCEF will not enforce the default Access Profile QoS provided by the BBF AAA; instead, it will adhere to the QoS instructions dynamically provided by the PCRF, ensuring consistent and centrally managed policy enforcement across the network. This approach ensures that the most up-to-date and relevant QoS policies, as determined by the PCRF, are applied to the IP-CAN session.