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Battery Backup Unit (BBU) Audible Alarms Your BBU is equipped with an audible alarm to inform you of problems with your BBU. The alarm sounds for two seconds and then is silent for 58 seconds. The conditions listed below are the potential reasons for the audible alarm. You can use the alarm in combination with the indicator lights to troubleshoot your BBU issue.
Low Battery - Alarm is silenced if the battery voltage goes above 12V (electrical power has returned), the battery is fully dischaged, or the battery is removed from the BBU.
Foreign Voltage - Alarm is silenced once the foreign voltage has been properly removed.
Replace Battery - Alarm is silenced when the battery is removed.
Overcurrent - Alarm is silenced once the overcurrent has been properly removed.
Since you are responsible for the management of your battery, it is very important that you familiarize yourself with the indicator lights and audible alarm to ensure that you have backup power if it's needed.
Please note: During a power outage, only your telephone service will receive power. Your backup battery will not operate your Internet or video services, or your router.
See Also: BBU Indicator Lights