5.6 Fault Recovery/Diagnostics5.6.1 UPS (Uninterruptible Power Supply) IntegrationDescriptionAn uninterruptible power supply unit (UPS) is a device that supplies power for several minutes to a connecteddevice when a power failure occurs.If the PBX is connected to a compatible UPS via USB when a power failure occurs, the PBX can determinehow much power remains in the UPS and shut down when the remaining power drops below a specified amountto prevent data loss or corruption.Conditions• For details about UPS units that are compatible with the automatic shutdown feature of this PBX, consultyour dealer. If an incompatible UPS is connected and the UPS runs out of power, the PBX will turn offwithout shutting down.• The power cord and USB cable must be connected to the same UPS. Connecting them to different UPSscan result in incorrect operation.• When power is restored after a power outage, the PBX operates in the following manner:– If the PBX did not shut down, normal operation continues uninterrupted.– If the PBX shut down and power remains in the UPS, the PBX must be started again manually. (Thepower switch must be turned off and then on again.)– If the PBX shut down and no power remains in the UPS, the PBX starts automatically. (This is becausethe PBX’s power switch is on.)Installation Manual References4.10 Connection of PeripheralsPC Programming Manual References4.1.1 Status—Equipment Status—UPS512 Feature Guide5.6.1 UPS (Uninterruptible Power Supply) Integration