Siemens M1 - Manual (Page 40)

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GSM M1 Module, English: A24859-N4000-A100-1-7677 gsm-m1-e.fm
Technical reference section
6.3.96
Please note:
The GSM module must not register when you select a forbidden operator manually!
Otherwise, you will not be able to set up any more connections. Display the list to find
out which operators are forbidden and which are allowed. Use the AT+CREG command
to find out whether or not the GSM module is registered. You will also be unable to set
up any connections if you have set mode n to “2” (sign off of network).
The PIN (personal identification number) is provided to prevent unauthorized use of the
GSM module. The PIN is usually a 4-position secret code. If this block is activated, you
must enter your PIN before you can use the module’s full range of functions. When you
query the status, the system displays result codes relating to the chip card and tells you
either that you must enter a PIN or that the chip card has already been read, in which
case PIN entry is unnecessary.
AT+CPIN - Enter PIN and query blocks
AT+CPIN
Command Result
AT+CPIN? Queries the PIN that must be entered.
AT+CPIN=<PIN>[,
<new PIN>] PIN entry. The PIN can comprise up to 8 positions.
If a PUK must be entered, the PIN is entered at the same
time. It will then be stored as a new PIN.
AT+CPIN?
Result code Meaning
+CPIN: READY M1 expects no further password. All blocks are released
and services are available without restriction.
+CPIN: SIM PIN M1 expects the PIN for the SIM card.
+CPIN: SIM PUK M1 expects the PUK for the SIM card, including a PIN.
+CPIN: PH-SIM PIN M1 expects a device code.
+CPIN: PH-SIM
PUK M1 expects the device PUK, including a PIN that is stored
as a device code.