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Power Failure Transfer
System Features
l
A Single Line Telephone Adapter (VB-40709) is required to provide
analog ports to the PFU.
Considerations
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Up to four SLTs can be connected to one Power Failure Unit.
l
If a call is in progress through the PFU when the power is restored, the call
will be disconnected.
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For added protection against power outages, backup batteries can be
installed in the DBS 824. Backup batteries provide full telephone service
and system features to all DBS 824 extensions for a limited amount of
time.
With maximum traffic, the backup batteries last up to 40 minutes.
l-30
DBS 824-l O-700
Issue Date 3/l/95
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