Installation manual

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Communication
Cable
Length
To find
the
length
of
the
communication
attachment,
measure
from
the
cable
entry/exit
hole
of
the
system
to
one
of
the
following:
The
external
modem
or
auto-call
unit
The
digital-network
channel
service
unit
The
teleprocessing
line
connector
The
protective
device,
where
such
a
device
communicates
with
a
switched
teleprocessing
line.
5-3