Question: Upon receiving a RAR command with Session-Release-Cause AVP from the PCRF, what action(s) does the BBERF take regarding QoS rules for that gateway control session?
Option 1: Modify all existing QoS rules to a default setting and then apply the gateway control session termination procedure.
Option 2: Instantly remove/deactivate all previously installed or activated QoS rules, acknowledge the PCRF, and then apply the gateway control session termination procedure.
Option 3: Suspend QoS rule enforcement temporarily until the gateway control session termination procedure is completed, then reactivate them.
Option 4: Ignore QoS rules related to the session and directly proceed with the gateway control session termination procedure.
Explanation: This option correctly reflects the specified behavior in response to a RAR command with Session-Release-Cause AVP. The BBERF's immediate actions include deactivating/removing QoS rules associated with the session and acknowledging the PCRF before proceeding with termination, ensuring a clean disconnection without lingering resource allocations.