At+Creg - Command For Querying Network Registration; Checking The Parameter Range Supported By This Command - Huawei MG323 At Command Interface Specification

Gsm m2m module
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HUAWEI MG323 GSM M2M Module
AT Command Interface Specification
Set the automatic network searching mode.
AT+COPS=0
only the <mode> parameter is valid.
OK
Example 3:
Manually register with the network.
AT+COPS=1,2,46000
OK
8.3 AT+CREG - Command for Querying Network
Registration
The AT+CREG command queries network registration.
8.3.1 Checking the Parameter Range Supported by This
Command
Test
command
Function
Response
Parameter description
<n>: URC mode
Issue 02 (2010-11-23)
AT+CREG=?
Returns the parameter range supported by this command.
In case of successful execution:
<CR><LF>+CREG: (list of supported <n>s)<CR><LF>
<CR><LF>OK<CR><LF>
In case of an error during command execution:
<CR><LF>ERROR<CR><LF>
In case of an error related to the MT during command execution:
<CR><LF>+CME ERROR: <err><CR><LF>
0 (default value): disables unsolicited reporting of AT+CREG.
1: enables unsolicited reporting of +CREG: <stat>. When <n>=1, that is, when
the status of network registration changes, +CREG:<stat> is reported.
2: enables unsolicited reporting of +CREG: <stat>[,<lac>,<ci>]. After the
AT+CREG READ command is sent previously or is reported unsolicitedly, the
values of the <lac> and <ci> parameters do not change, the preceding
command is not displayed. During the call, the optional parameters <lac> and
<ci> are not displayed. When <n>=2, that is, when the cell information changes,
+CREG: <stat>[,<lac>,<ci>] is reported. The location information <lac>,<ci> is
reported only when <n>=2.
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Commands for Network Services
In automatic network searching mode,
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