Siemens MC55 - Manual (Page 109)

MC55 AT Command Set
5.2 AT+CPIN2
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MC55_ATC_V01.05 Page 109 of 469 2/10/04
Confidential / Released
EXAMPLE 3
To write to "FD" phonebook:
AT+CPBS="FD"
OK
AT+CPBW=2,"+493012345678",145,"Charly"
+CME ERROR 17
access denied due to missing PIN2 authentication
AT+CPIN2=8888
OK
AT+CPBW=2,"+493012345678",145,"Charly"
OK