... AT+CPBF=? +CPBF: 21,10 # +CPBW=? (Write phonebook entry) AT+CPBW=? +CPBW: (1-160),21,(129,145),10 # +CCLK=? (Clock) AT+CCLK=? ERROR # +CALA=? (Alarm) AT+CALA=? ERROR # +CSIM=? (Generic SIM access) AT+CSIM=? ERROR # +CRSM=? (Restricted SIM access) AT+CRSM=? ERROR # +CSCC=? (Secure control command) ...