AT Commands User Manual may by: − 0 disable network registration unsolicited result code. − 1 enable network registration unsolicited result code +CREG: . − 2 enable network registration and location information unsolicited result code +CREG: , , . may be: − 0 not registered, ME is not currently searching a new operator to register to. − 1 registered, home network. − 2 not registered, but ME is currently searching a new operator to register to. − 3 registration denied. − 4 unknown. − 5 registered, roaming. string type; two byte location area code in hexadecimal format (e.g. “00C3”) string type; two byte cell ID in hexadecimal format (e.g.
“A13F”) integer type; the order number of operator in the SIM preferred operator list. may be (see also +COPS): − 0 long format alphanumeric . − 1 short format alphanumeric . − 2 numeric . 27 7.4 Network registration +CREG Command syntax Description AT+CREG= AT+CREG=1 AT+CREG= This set command controls the presentation of an unsolicited result code +CREG: when =1 and there is a change in the ME network registration status, or code +CREG: , , when =2 and there is a change of the network cell. OK or CME ERROR: AT+CREG=1 Read command +CREG: , , , OK AT+CREG? Test command AT+CREG=? Test command +CREG: (0-2) Note: i.e. list of the supported s OK AT+CREG=?
7.5 Preferred operator list +CPOL Command syntax Description AT+CPOL= , , AT+CPOL=2,0,”T-Mobil D” This command is used to edit the SIM preferred list of networks and writes an entry in the SIM list of preferred operators, previously selected by the command +CPLS. If no list has been selected (e.g. because +CPLS command is not implemented), the default SIM file EFPLMNwAcT is used. OK or CME ERROR: Read command AT+CPOL? +CPOL: 1,0,”F SFR” +CPOL: 2,0,”T-Mobil D” OK Test command AT+CPOL=? +CPOL: (1-30),(0-2) Note: i.e. (list of supported s),(list of supported s) OK