Mitel 3000
Administrator’s Manual
Note: Numbers on an extension’s Personal Speed-Dial list cannot override the Class-of-Service restriction
of the extension.
POWER FAILURE OPTIONS To Provide Battery Backup
Your Mitel 3000 can be equipped with an optional Battery Backup Unit (BBU). When equipped, full
operation of the Mitel 3000 is provided for at least one hour in the event of a power failure.
Battery Alarm
If your system is equipped with a battery, a message “Battery” is displayed on extension 20 if the system is
running on the battery. If you are not aware that the normal power has failed, check that the Mitel 3000
System is correctly plugged in.
To Make Outgoing Calls Following a Power Failure
• In the event of a power failure (with the system not equipped with a BBU), analog CO lines are
switched automatically to standard analog telephones and calls can be made and received on these lines
until the power is restored.
• The system installer will indicate the location of these phones.
• A minimum of half the equipped CO lines are connected to phones.
A status LED on the BBU is provided.
• GREEN indicates the unit is running from the main AC power source and the battery is charging or
fully charged.
• ORANGE indicates the unit is running off the battery.
• RED indicates that the battery is discharged.
• Flashing RED indicates the battery is disconnected and the system is running from the main AC power
source.
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