Battery back up
An optional battery back up unit is available. When
equipped, full operation of the BT Inspiration is provided
for at least one hour in the event of a power failure.
If your switch is equipped with ISDN2 lines it is
recommended that this unit is installed so that calls can
be received and made on the ISDN2 lines when power
fails. The initial battery is supplied with the battery back-
up unit.
Power fail transfer
In the event, of the power failing standard telephone lines
are switched automatically to particular extensions so that
calls can be made and received on these lines until the
power is restored.
Line 1 is switched to extension 24
Line 2 is switched to extension 25
Line 5 is switched to extension 31
Line 7 is switched to extension 37
Note:
The Featurephone will not work when the power has
failed so the extensions must be connected to standard
telephones when the lines are switched to them.
ISDN2 lines are not switched and Battery Back up must
be provided if service is required on these lines during a
power failure.
39
Power Failure options
Summary of Contents for Featurephone
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