Wiring
Punch Down Terminal
Block with Split Center
(not included)
Emerson # 66M1-50
Siemon # 66M150
Suttle # SE-66M1-50-C5
To 24 Monitored
Stations or Phones
C.O.
Lines
RJ21X Male Jack
(not included)
MODEL SO-24A
VIKING
©
24 LINE
SERVICE OBSERVING UNIT
VIKING
ELECTRONICS
HUDSON, WI 54016
POWER
13.8 VAC
STATUS LED
1 2 3
OFF
MASTER
PROGRAM
RECORD CONTROL
RJ21X
LINE / STATION CONNECTIONS
TAPE RECORDER
CONNECTIONS
MULTI-UNIT
COMMUNICATIONS
ON
OFF
INPUT
OUTPUT
RECORD
CONTROL
OUT
AUDIO
OUT
OR
24 Analog
PABX/KSU
Stations
Punch down the SO-24A in
parallel with up to 24 analog
lines or stations.
Bridge Clip the
First 24 Pairs
13.8V AC
Adapter
(included)
120V AC
Unused
PABX/KSU
Trunk Port
Observing
Phone
Observing
Station
Row 1
Lines In
1T
1R
2T
2R
3T
3R
4T
4R
5T
5R
6T
6R
7T
7R
8T
8R
9T
9R
10T
10R
11T
11R
12T
12R
13T
13R
14T
14R
15T
15R
16T
16R
17T
17R
18T
18R
19T
19R
20T
20R
21T
21R
22T
22R
23T
23R
24T
24R
Row 2
Unused
Row 3
SO-24A
W/BL
BL/W
W/O
O/W
W/G
G/W
W/BN
BN/W
W/S
S/W
R/BL
BL/R
R/O
O/R
R/G
G/R
R/BN
BN/R
R/S
S/R
BK/BL
BL/BK
BK/O
O/BK
BK/GN
GN/BK
BK/BN
BN/BK
BK/S
S/BK
Y/BL
BL/Y
Y/O
O/Y
Y/G
G/Y
Y/BN
BN/Y
Y/S
S/Y
V/BL
BL/V
V/O
O/V
V/G
G/V
V/BN
BN/V
V/S
S/V
Row 4
To Phones
1T
1R
2T
2R
3T
3R
4T
4R
5T
5R
6T
6R
7T
7R
8T
8R
9T
9R
10T
10R
11T
11R
12T
12R
13T
13R
14T
14R
15T
15R
16T
16R
17T
17R
18T
18R
19T
19R
20T
20R
21T
21R
22T
22R
23T
23R
24T
24R
25T
25R
Factory
Default
2-Digit
Dial Up Code
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
User
Programmable
2, 3, or 4 Digit
Dial Up Code*
Memory
Location:
#01
#02
#03
#04
#05
#06
#07
#08
#09
#10
#11
#12
#13
#14
#15
#16
#17
#18
#19
#20
#21
#22
#23
#24
Remote
Observing
OR
Bridge Clip the
First 24 Pairs
RAD-AMP
DOD# 415
2
A. Single Module Wiring
IMPORTANT:
Electronic
devices are susceptible to
lightning and power station
electrical surges from both
the AC outlet and the tele-
phone line. It is recom-
mended that a surge
protector be installed to pro-
tect against such surges.
*Note:
When using multiple
units, see
DOD# 943
for a
programming chart to man-
age dial up codes for up to
10 units.
