EG_GenPro78e_1003_UG_007_UK
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Description and non-contractual illustrations in this document are given as an indication only.
ERCO & GENER reserves the right to make any modifications.
5.6 Verifying the PIN code
The PIN code is essential in order to make a call or to accept a call from the GSM network.
The PIN code is held on the SIM card and can be modified by the user.
To verify a previously entered PIN code, use a communication application and enter the command
AT+CPIN?
The table below shows the main responses from the modem:
Command
Response
Interpretation
AT+CPIN?
+CPIN: ERROR
The SIM card is absent or unknown
+CPIN: READY
The PIN code is correct
+CPIN: SIM PIN
The PIN code is bad or not yet entered
+CPIN: SIM PUK
The PUK code is required
For more information about the AT commands see the ERCO & GENER "Commands List".
5.7 Verifying modem registration on the GSM network
1. Ensure that a valid SIM card is present in the SIM card reader in the modem.
2. Using a communications application, enter the following AT commands :
a.
AT+CPIN=xxxx
Enter the PIN code. The user has only 3 attempts to enter the PIN code.
After the third attempt, only the PUK code (supplied by the operator) will allow a new PIN
code to be entered.
b.
AT+CREG?
Verify the network registration status. The response will be of the following
format :
+CREG: <mode>,<stat>
where :
<Mode>
= un-solicited registration message configuration,
<Stat>
= registration status
3. Verify the registration status with the aid of the following table :
Command
Response
Interpretation
AT+CREG?
+CREG: 0,0
The modem is not recognised by the
network.
+CREG: 0,2
The modem is searching for a network
operator.
+CREG: 0,1
The modem is GSM attached to a local
operator.
+CREG: 0,5
The modem is GSM attached to an
operator in roaming mode.
If the modem is not registered, verify the antenna connexion and the receive signal level (see chapter
5.5
Verifying GSM receive signal quality
).
For more information about the AT commands see the "Command List" from ERCO & GENER.
