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HSDPA Standard At Commands Page 25 of 60 Version 1.2
Table 15. +CREG parameter command syntax
Command Possible response(s)
+CREG=[<n>]
+CREG? +CREG: <n>,<stat>[,<lac>,<ci>]
+CME ERROR: <err>
+CREG=? +CREG: (list of supported <n>s)
value
<n>:
0
disable network registration unsolicited result code
1 enable network registration unsolicited result code +CREG: <stat>
2 enable network registration and location information unsolicited result code +CREG:
<stat>[,<lac>,<ci>]
<stat>:
0 not registered, MT is not currently searching a new operator to register to
1 registered, home network
2 not registered, but MT is currently searching a new operator to register to
3 registration denied
4 unknown
5 registered, roaming
<lac>: string type; two byte location area code in hexadecimal format (e.g. "00C3"
equals 195 in decimal)
<ci>: string type; two byte cell ID in hexadecimal format
1.20. PLMN selection +COPS
Set command forces an attempt to select and register the GSM/UMTS network operator. <mode>
is used to select whether the selection is done automatically by the MT or is forced by this
command to operator <oper> (it shall be given in format <format>) to a certain access
technology, indicated in <AcT>. If the selected operator is not available, no other operator shall
be selected (except <mode>=4). If the selected access technology is not available, then the same
operator shall be selected in other access technology. The selected operator name format shall
apply to further read commands (+COPS?) also. <mode>=2 forces an attempt to deregister from
the network. The selected mode affects to all further network registration (e.g. after <mode>=2,
MT shall be unregistered until <mode>=0 or 1 is selected).
This command should be abortable when registration/deregistration attempt is made.
Read command returns the current mode, the currently selected operator and the current Access
Technology. If no operator is selected, <format>, <oper> and < AcT> are omitted.