Question: What is the primary purpose of the Revalidation-Time Attribute Value Pair (AVP) in Policy and Charging Control (PCC), as per 3GPP standards, in relation to a PCEF's behavior?
Option 1: To specify the NTP time before which the PCEF must re-request PCC rules when REVALIDATION_TIMEOUT is triggered.
Option 2: To define the maximum session duration for all access types in a PCC rule.
Option 3: To indicate the time interval between successive CCA (Credit-Control-Answer) messages from the OCS (Online Charging System).
Option 4: To set the timeout value for RAR (Re-Auth Request) messages in case of no response from the UE (User Equipment).
Explanation: The Revalidation-Time AVP informs the PCEF about the NTP time by which it needs to re-initiate a request for PCC rules upon the REVALIDATION_TIMEOUT event trigger, ensuring timely rule updates for effective policy enforcement and charging management.