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COM300 Voice Communication Modem
3
3. Hardware Installation
3.1 Site Installation
Connection to telephone company-provided COIN service
(Central Office ImplemeNted systems) is prohibited. Connection
to party line service is subject to state tariffs.
The COM300 is designed to be used on standard device telephone lines. The
COM300 connects to the telephone line by means of a USOC RJ11C jack
(standard modular telephone jack).
Connect the cable from the telephone RJ11C jack to the modem as shown in
Figure 2. If the telephone company has not installed surge protection in the
telephone line (no RJ11C jack), one must install surge protection (Model 6362
or 2372-01) and connect the ring and tip terminal blocks as shown in Figure 3.
TIP
R
IN
G
GND
CAMPBELL
S
C
IE
N
T
IF
IC
IN
C
.
M
A
D
E
IN
U
S
A
S/N
1
0
0
2
Complies with Part 68, FCC rules. FCC Registration No. B9QUSA-31402-MM-T
R
inger E
quivalence 0
.5
A
.R
eq
uired C
on
n
ecto
r U
S
O
C
R
J11C
.
T
h
is
e
q
u
ip
m
e
n
t c
o
m
p
lie
s
w
ith
th
e
re
q
u
ir
e
m
e
n
ts
in
P
a
rt 1
5
o
f F
C
C
R
u
le
s
fo
r
C
la
s
s
A
computing device. Operation of this equipment in a residential area may cause
unacceptable interference to radio and TV reception requiring the operator to take
w
h
a
t
e
v
e
r
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t
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p
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a
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f
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e
.
COM300
V
O
IC
E
S
Y
N
T
H
E
S
IZ
E
R
1
2
V
G
SE
DIFF
G
GH L
12
1
AG H L AG H L AG E1 AGE2 G
34
2
56
3
SE
DIFF
G
GH L
78
4
AG H L AG H L AG E3 AG G G
910
5
11 12
6
P1 G P2 G C8 C7 C6 C5 C4 C3 C2 C1 G 12V 12V
SDM
5V 5V G G
SW 12V
SW 12V CTRL
Logan, Utah
G 12V
G 12V
POWER
IN
CR10X WIRING PANEL
MADE IN USA
WIRING
PANEL NO.
EARTH
GROUND
CS I/O
To Earth
Ground
14 AWG Ground Wire
SC12 Cable
Telephone Wall
Jack
FIGURE 2. COM300 Hardware Connection Using Standard RJ11
Telephone Jack
NOTE