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AT+COPS
GSM Bulk can automatically detect the GSM operator both directly and in roaming. With this
command you can check the current provider. Moreover, in extreme cases it is possible to force
the registration to a specific provider: in this case check the registration status with the command
AT+CREG.
With the command AT+COPS=? it is possible to verify the situation of the operators: 0 unknown
operator; 1 operator is available; 2 current operator; 3 the operator is forbidden and cannot be
selected.
For further information on AT+COPS command, see the chapter "Functional Examples".
Command
AT+COPS=<mode>,
<format>,<oper>
AT+COPS?
AT+COPS=?
Default: AT+COPS=0,2
<mode> Registration mode
0
Automatic (<oper> is ignored)
1
Manual
4
If manual selection fails, automatic mode is entered
<format> Operator format
0
Long alphanumeric format (e.g. I OMNITEL)
1
Short alphanumeric format (e.g. OMNI)
2
Numeric format (e.g. 22210)
<oper>
Operator identifier
AT+CPIN
This command is used to enter the PIN and PUK codes. If the SIM card, used with Pocket GSM,
has the PIN code enabled, it will be necessary to insert it each time you turn the modem on, to
permit the registration to the GSM network.
The PIN and the PUK code management can be carried out with any mobile phone.
For further information on the PIN code management, see chapter "Functional Examples".
Attention: If the PIN code is three times wrongly inserted, the SIM card is blocked. To unblock,
insert the PUK code and the new PIN code. (e.g. AT+CPIN=12345678,1234).
Command
AT+CPIN=<pin>
AT+CPIN=<puk>,<pin>
AT+CPIN?
<status>
Description
+CPIN: READY
PIN code is present: SIM ready
+CPIN: SIM PIN
PIN is required
+CPIN: SIM PUK
PUK is required
+CPIN: SIM PIN2
PIN2 is required
ERROR
SIM card reading failed
26
Operator selection
Possible answers
OK / ERROR
+COPS: 0,2,22201
+COPS: (2,"I TIM","TIM","22201")...
Enter PIN code
Possible answers
OK / ERROR
OK / ERROR
<status>
Action
Selects the operator
Shows the current operator
Shows the available operators
Action
PIN code insertion
PUK and PIN insertion
Shows the SIM status
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