2.13.8 Service Based Interface Support

When DSR receives an Rx-AAR message, the message is processed in the following ways:

• For 4G users, Policy DRA (P-DRA) queries the SBR database.
• For 5G users, P-DRA forwards the Rx-AAR message to the configured diameter peer (OCIWF) because SBR does not contain 5G information. When the OC-IWF sends the Rx AAA – 3006 (Diameter Redirect)Redirect-Host – PCF FQDN, the Redirect Agent functionality in DSR redirects the Authentication,Authorization Request (AAR) to the PCF FQDN.