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September 1995 Issue 1 E-1
E
Installing the 9400-Series Telephones
Installing the 9400-Series Telephones
The following figures provide the basic information to install the 9400-series
telephones.
!
CAUTION:
When this product is located in a separate building from the DEFINITY
Communications System, a line current protector MUST be installed at the
entry/exit points of all buildings through which the line passes. However,
there is a difference between 4-wire and 2-wire installations.
The following are the ONLY acceptable devices for use in a 4-wire installation
(note that two protectors are needed at each installation point):
■ AT&T 4-type protectors
■ ITW LINX™ LP-type protectors
For 2-wire installations, the following is recommended (only one protector is
needed at each installation point):
■ AT&T 4-type protectors
■ ITW LINX™ LP-type protectors
However, if the above two protectors are not used, the following is acceptable in
a 2-wire installation:
■ AT&T 3BIC (Carbon block) or AT&T 3BEW (gas tube) protectors