Siemens TC37 Module At Command Reference page 78

AT Command Set
To lock the mobile to the currently inserted SIM card, first specify a password (=
a phone code):
AT+CPWD="PS",,1234
OK
or:
AT+CPWD="PS",1234,3333 To replace existing "PS" password: Enter old
OK
Then, activate the phone lock:
AT+CLCK="PS",1,3333
OK
Example 2
To deactivate the phone lock:
AT+CLCK="PS",0,3333
OK
As a result, the mobile accepts any SIM card and can be operated after the
card's SIM PIN 1 was entered.
Example 3 To operate the mobile with the SIM card for which "PS" lock was activated:
AT+CPIN?
+CPIN: SIM PIN
AT+CPIN=9999
OK
Example 4
To operate the mobile with other SIM card than the one used for the "PS" lock:
Enter SIM PIN of present card, followed by "PS" lock password.
AT+CPIN?
+CPIN: SIM PIN
AT+CPIN=1111
OK
AT+CPIN?
+CPIN: PH-SIM PIN
AT+CPIN=3333
OK
Example 5
Attempt to unblock the "PS" lock using an invalid password:
AT+CPIN?
+CPIN: SIM PIN
AT+CPIN=1111
OK
AT+CPIN?
+CPIN: PH-SIM PIN
AT+CPIN=4444
+CME ERROR: incorrect password
TC3X_ATC_01_V04.00
If "PS" lock has not been set before: enter new
password.
and new one.
Locks the mobile to the current SIM card.
Enter lock type "PS", followed by 0 to lift the
lock. Then type "PS" lock password.
Enter SIM PIN used when locking the mobile.
"PS"lock password is not needed.
Enter SIM PIN of present SIM card.
SIM PIN accepted.
"PS" lock password is required.
"PS" lock password has been accepted.
Enter SIM PIN of present SIM card.
SIM PIN accepted.
"PS" lock password is required.
Bad password is given:
Page 78 of 204 29.05.2002