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Infinite 8 I 6 Key Telephone System
INSTALLATION
3-wire-to-2-wire
plug
adapter.
A
power
line
surge protector
should
be used to protect
the
power supply from electrical
surges.
The surge
protector
should
be installed
in accordance
with
the manufacturer's
instructions
and ap-
plicable
electrical
codes.
Do not plug in the power cord at this
time.
500.5
KSU CABLING
Three
(3) Amphenol-type
connectors
are pro-
vided on the outside
surface
of the KSU (Refer
to Figure 200-2).
On the right edge of the front surface is the P- 1
connector
which requires
a female ended cable
for proper
attachment.
Table
500-l
lists the
pm function
for P-l.
On the left side surface
of the 8 16 KSU are two connectors
marked
J- 1
and J-2.
The J-l
connector
is located
just
below the J-2 connector.
J-l and J-2 require
90 degree male ended
plug cables for proper
attachment.
Tables 500-2
and 500-3
list the
pin functions
for J-l and J-2.
When connect-
ing cable
tails
to the KSU,
make
sure
the
designation
on the AMP hood
matches
the
designation
at the connector's
input
on the
KSU.
After plugging
in the required
cables,
a 'horse
shoe" fastener
should
be placed
around
the
mated
AMP connectors
to secure the cable to
the KSU connector
provided.
Verify
that
the wires
are properly
cross-con-
nected.
Observe
telephone
standard
wiring
color codes where ever necessary.
Cabling
should
be routed
to avoid fluorescent
light fixtures,
electric motors
and generators,
welding
equipment.
and
radio
transmitters.
Additionally,
care should
be taken to avoid hot
locations
such as steam
pipes and furnaces,
and areas where wiring
is subject
to abrasion.
It is NOT recommended
that power be
applied to the system during
the cable
termination
process.
500.6
L;IGHTNXNG PROTECTION
The I@in&
8 16 Key Telephone
System
should
have central
ofTice lines protected
with proper
lightning
surge arrestors.
The central
ofhce
lines are exposed to damaging
surges induced
by direct or non-direct
lightning
strikes.
The protection
should
contain
a complement
of three-element
gas discharge
tubes
which
ground
high potential
surges,
and associated
circuits
to absorb
and fflter lower-level
surge
potentials.
Care should
be taken
to ensure
that
not more than
one set of protectors
be
installed
on central
office lines at installation
premises.
Improper
installation
of line protec-
tion can present
a serious safety hazard.
500.7
KEY TELZPHONE INSTALf&TION
A
maximum
of 16 Key Telephones
may
be
installed
with the 816 Key Telephone
System.
Each Key Telephone
requires
2 pair (4 wires)
for proper
wirfng.
It is recommended
that
3
pair twisted
pair cable be
used to connect the
telephones
to the system
on a 'home
run"
basis.
The telephone
end of the cable should
be terminated
on
a
modular
jack as shown
in
Figure
500-2.
At the MDF end of the home
run, the cable should
be terminated
on a sepa-
rate
station
connecting
block
(66Ml-501
for
cross connection
to the *J" cables. This method
of cabling will allow for easy isolation
of station
equipment
during
troubleshooting
proce-
dures.
500.8
WALL MOUNT KIT INSTALLATION
All connections
to the Key Telephones
are fully
modular.
To wall mount
the Key Telephone,
it
is necessary
to have one Wall Mount
Kit and
one 630-A
type modular
wall mount
jack
as-
sembly
equipped
with two mounting
lugs (See
Figure 500-3).
a.
b.
C.
d.
e.
f.
Remove the mounting
cord from
the Key
Telephone.
This
cord will no longer
be
needed,
but should
be retained
for mafn-
tenance
purposes.
Substitute
the short modular
cord on the
wall
mount
baseplate
for
the removed
mounting
cord.
Rotate
the plastic
number
retainer
up-
wards
to expose
the screw
underneath.
Remove
the screw,
and
slide
the cover
plate under
the number
retainer
towards
the hook-switch.
Replace the cover plate with
the handset
retainer
tab that
is mounted
in the wall
mount
baseplate
and
secure
with
the
screw from Step c. above.
Rotate the plastic number
retainer
down-
ward and snap into place.
Align the mounting
tab on the outer edges
of the wall mount
base with
the holes on
the Key Telephone
base.
Snap shut
and
fasten with the screw.
Issue 1. January 1992
500-3
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