Display and Control Elements
INSYS Modem 336 LL 2D/4D 5.x Originate / Answer
5
Display and Control Elements
Figure 1: LEDs on the front panel
Position
Description
1 Power
LED
2
Off Hook LED
3
Data Carrier Detect LED
4
Receive & Transmit LED
5 Reset
key
Table 3: Description of the LEDs on the front panel of the device
5.1
Meaning of the Displays
Description
Display
Meaning
Power LED
LED on
Supply voltage available
LED off
No supply voltage
Off Hook LED
LED on
Modem is hooked to the
phone line and online.
LED off
Modem is not hooked to
the phone line and offline.
Data Carrier Detect LED
LED on
Connection to remote ter-
minal is established
Receive & Transmit LED
LED off
Lights up when data is
transmitted via the serial
interface.
Table 4: Meaning of the LED displays
12
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