The wrong ARU type was selected during installation. Specifically, “ARO Release? 1/2“ was set to1 , but type 2 hardware is present. The check is done only when starting ARO operation. Check the settings of the following parameters: Interface Type Should be 3 for NSAA ARU ARO Type Should be 4 for NSAA ARU ARO Release? 1/2 Should be 1 for ARU1 or 2 for ARU2