3
OH
Off-Hook
Lights up when off-hook.
EC
Error Correction
When configure to error correction mode in command mode
When making a protocol link (V.42 or MNP4) with remote
modem in data mode.
Modem Rear Panel
POWER
SERIAL PORT
AC
SW1
SW2
LINE
Figure 1-2 Modem Rear Panel
POWER
Power switch
AC
The power source input. Put the other end into the
wall outlet of the AC power source.
SERIAL PORT The RS-232 serial port. Use the RS-232C cable to
connect the modem and the computer or terminal.
LINE
The jack allows user to connect the telephone line
to the modem.
Dip Switch
5
ON
2
1
4
3
7
6
10
9
8
12
11
ON
2
1
SW1
SW1 SW2
The 12-position DIP Switch
POSITION 1, 2 - Operation and line type selection
1
2
ON
ON
Power on operation
OFF
ON
V.25bis operation
ON
OFF
dumb mode operation
OFF
OFF
AT command operation
