Datasheet

Initial Operation INSYS GSM 4.2 easy
26 January 07
The signal quality is indicated with an update interval of 1 minute (in idle state) by
the LED Signal:
LED Signal
Response of
AT**SIGNAL?
Radio link quality
Always on 25 ... 31 optimum
60 ms 23 ... 24
140 ms 21 ... 22
very good
260 ms 19 ... 20
380 ms 17 ... 18
good
500 ms 15 ... 16
1000 ms 13 ... 14
sufficient
0 ... 12
not sufficient Î improve location
Always off
99 Not detectable
4.4 Log-In State in GSM Network
Check whether your SIM card and the entered PIN have been accepted by entering
AT+CREG?<CR> in the terminal window. The response takes place in the
following format,
e.g. <+CREG: 0,3> - (Meaning: refused).
The status of the login state is indicated by the second parameter of the response.
0 Not registered, no GSM network search
1 Registered at standard provider
2 Not registered, GSM network search
3 Refused
5 Registered, roaming
If you are not logged in, check whether the device expects a PIN by entering the
command AT+CPIN?in the terminal window. The responses mean:
READY No further input necessary
SIM PIN Enter PIN of the SIM card Î store the PIN for automatic dial-up of
the INSYS GSM 4.2 easy and execute a reset.
SIM PUK Enter PUK of the SIM card Î the PIN has been repeatedly entered
wrong and is locked now. To unlock, the PUK, which you find in the
contract documents of your GSM provider is required. Remove the
SIM card and enter the PUK using the menu of any commercial
mobile phone. You must absolutely ensure afterwards that the
correct PIN is stored in the INSYS GSM easy.