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COMSPHERE 392xPlus Modems
1-14 November 1996 3920-A2-GN31-30
Table 1-2
(2 of 2)
Technical Specifications for 392x
Plus
Modems
Specifications Description
POWER CONSUMPTION
Model 3920
Plus
Singleport 6 watts (typical, including power supply, speaker off)
Model 3921
Plus
Singleport 4 watts (typical, each card) (Speaker consumption is approximately
1 watt at high volume.)
Model 3920
Plus
Multiport
8 watts (typical, including power supply, speaker off)
Model 3921
Plus
Multiport
6 watts (typical, each card) (Speaker consumption is approximately
1 watt at high volume.)
DIMENSIONS
Weight 2.5 pounds (1.14 kg) Model 3920
Plus
(without power supply)
1.0 pounds (0.45 kg) Model 3921
Plus
Height 2.1 inches (5.4 cm) Model 3920
Plus
7.1 inches (18.1 cm) Model 3921
Plus
Width Singleport
7.6 inches (19.4 cm) Model 3920
Plus
0.9 inches (2.3 cm) Model 3921
Plus
Multiport
7.6 inches (19.4 cm) Model 3920
Plus
1.8 inches (4.6 cm) Model 3921
Plus
Depth 12.1 inches (30.8 cm) Model 3920
Plus
13.4 inches (34.0 cm) Model 3921
Plus
TRANSMIT LEVEL
Leased Line (North America) 0 through –15 dBm (in 1 dBm decrements)
Factory default is 0 dBm
Leased Line (All Other Countries) –1 through –15 dBm (in 1 dBm decrements)
Factory default is country dependent
Dial Line (North America) –10 through –32 dBm (in 1 dBm decrements)
Factory default is Permissive (–9 dBm)
Dial Line (All Other Countries) Level setting is not accessible to the user
Factory default is country dependent
TELEPHONE INTERFACE
Leased-Line Connectivity JM8 (Model 3920
Plus
)
50-pin mass termination (Model 3921
Plus
)
Dial-Line Connectivity RJ11C Permissive
RJ21X Permissive 50-pin connector (Model 3921
Plus
)
DATA RATES
Leased Line
33,600, 31,200, 28,800, 26,400, 24,000, 21,600, 19,200, 16,800,
14,400, 12,000, 9600, 7200, 4800, 2400 bps
Dial Line
33,600, 31,200, 28,800, 26,400, 24,000, 21,600, 19,200, 16,800,
14,400, 12,000, 9600, 7200, 4800, 2400, 1200, 600, 300 bps
ERROR CONTROL CCITT V.42
MNP 4–2
DATA COMPRESSION CCITT V.42bis
MNP Class 5