Register Refresh

When a registration Refresh is received before the half time of the registration expiry, the registration cache is not updated and the Oracle Communications Session Border Controller responds with 200OK to the UE. This is standard registration cache functionality. No additional AAR is sent to the PCRF.

If a registration Refresh is received after the half time of the registration expiry, or if any registration information changes, the Oracle Communications Session Border Controller sends an AAR to the PCRF after it receives and forwards a 200 OK response from registrar. The AAR includes the same session-id as the initial AAR that was to PCRF. This lets PCRF correlate the AAR with the earlier AAR that it received.