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DX-120 Installation and Maintenance Manual
O
VERVIEW
W
IRING
D
ATA
S
IGNALING
(C
ENTRAL
O
FFICE
-PSTN) D
ATA
Specifications (continued on next page)
7270
CO DX HD
L
W
H
210 mm
138 mm
21 mm
8.25 in.
5.5 in.
.0875 in.
0.342Kg
7271C
CO DX FLASH
L
W
H
210 mm
138 mm
21 mm
8.25 in.
5.5 in.
.0875 in.
0.233Kg
7285
ISDN (T1/PRN) Module
L
W
H
210 mm
138 mm
17.4 mm
8.25 in.
5.5 in.
.69 in.
0.184Kg
7290
T1 Module
L
W
H
210 mm
138 mm
17.4 mm
8.25 in.
5.5 in.
.69 in.
0.184Kg
Maximum Cable Length
DET (distance measures in linear feet of
cable from KSU to DET)
26 AWG - 255m (850 ft.)
24 AWG - 425m (1416 ft.)
22 AWG - 700m (1983 ft.)
Standard Single Line Telephone (dis-
tance measures in linear feet of cable
from KSU to IST)
26 AWG - 195m (650 ft.)
24 AWG - 340m (1133 ft.)
22 AWG - 476m (1586 ft.)
Dialing Specifications
DTMF Dialing Mode
Frequency deviation:
Rise time:
Duration of DTMF signal:
Inter-digit time:
VM Port DTMF duration:
VM Port Inter-digit time:
+ 1%
3ms
programmable 50-150ms (70ms default)
programmable 50-150ms (70ms default)
programmable 60-150ms (120ms default)
programmable 60-150ms (120ms default)
Pulse Dialing Mode
Pulse dial rate:
Pulse Make/Break ratio:
10 pulses per second
60/40
UNIT SPECIFICATIONS
(continued)
Part Number
Description
Dimensions:
Weight
Summary of Contents for comdial DX-120
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