Power Failure Options; To Provide Battery Backup; Battery Alarm; To Make Outgoing Calls Following A Power Failure - BT Versatility V16 Owner's Manual

Power failure options

To provide battery backup

Your BT Versatility can be equipped with an optional Battery Backup Unit (BBU). When
equipped, full operation of the BT Versatility is provided for at least one hour in the event
of a power failure. If your system is equipped with ISDN access, it is recommended that
this BBU be installed as calls can be received and made on the ISDN lines if power fails.

Battery Alarm

If your system is equipped with a Battery a message 'Battery Alarm' 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 the switch is plugged in.

To make outgoing calls following a power failure

In the event of a mains power failure, (with the system not equipped with a BBU),
Analogue exchange lines are switched automatically to particular extensions and calls
can be made and received on these lines until the power is restored. The Featurephone
will not work when power has failed, so these extensions must be connected to standard
telephones in order for calls to be made.
• Line 1 is switched to Extension 26
• Line 2 is switched to Extension 27
• Line 5 is switched to Extension 34
• Line 6 is switched to Extension 35
• Line 9 is switched to Extension 42
• Line 10 is switched to Extension 43
• Line 13 is switched to Extension 50
• Line 14 is switched to Extension 51
Note: ISDN lines are not switched. A Battery Backup Unit must be provided if ISDN service is required
during a power failure.

Connecting the Battery

Ensure the battery switch on the BBU unit is turned off.
• This switch does not turn off the mains supply. The mains is
disconnected by unplugging the mains cord.
• Insert the battery into the battery cavity in the CCU.
• Connect the cables from the battery charger to the battery ensuring that the cables
are connected correctly. Red cable to Red battery terminal, Black cable to Black
battery terminal.
• Turn the battery charger switch on.
• Reconnect the mains.
Led Indicators
A status LED on the BBU is provided.
• GREEN indicates the unit is running from mains power 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 switch is running from
the mains.
Incoming Call Handling on the BT Versatility
BT Versatility
Owners Manual
57