ModemUSB
User’ Manual v2.1.1.19
8
2.4.
Indication
“ModemUSB” has 2 LEDs for indication. They are located at the top part of the device.
Due to these indicating LEDs we can determine in which mode is the device operating, are
there any shortcuts in its functionality or not. The indication status of the modem is given in
the Table 3.
Table 3. Description of modem status.
“Power” is on
Power supply is connected
“Status” is green and blinking
Modem is powering up
“Status” is green
The device is ready to use
“Status” is yellow and blinking
No SIM card inside, no PIN code entered or any
possibility to connect to the GSM Network
“Status” is yellow
The device has successfully connected to the
Network for data transfer
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