User guide

POWER FAILURE STATION
The system provides one tip and ring pair connected
to line one as an emergency, power failure circuit.
This power failure pair is located on Mod jack 1 for all
common equipment models. This jack is the rightmost
jack when facing the right side of the cabinet as shown
in Figure 3-5. The power failure pair is only active
during an AC power failure. An industry standard
single-line telephone, such as a Comdial 2500-xx can
be connected to the power failure pair and used to
provide communications capability should the AC
power to the system beto the power failure pair and
used to provide communications capability should the
AC power to the system be interrupted.
IMI 66-064 System Description
3-12