GSM/GPRS Module
M35 AT Commands Manual
M35_AT_Commands_Manual Confidential / Released
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Parameter
Example
AT+COPS=?
// List all current network operators
+COPS: (2,"CHINA MOBILE","CMCC","46000"),(3,"CHINA UNICOM GSM","CU-GSM","46001")
,,(0-4),(0-2)
OK
AT+COPS?
// Query the currently selected network operator
+COPS: 0,0,"CHINA MOBILE"
OK
6.2. AT+CREG Network Registration
+CME ERROR: <err>
Reference
GSM 07.07
<stat>
0
Unknown
1
Operator available
2
Operator current
3
Operator forbidden
<oper>
Operator in format as per
<mode>
<mode>
0
Automatic mode;
<oper>
field is ignored
1
Manual operator selection;
<oper>
field shall be present
2
Manual deregister from network
3
Set only
<format>
(for read Command
+COPS?
) – not shown in Read Command
response
4
Manual/automatic selected; if manual selection fails, automatic mode
(
<mode>
=0) is entered
<format>
0
Long format alphanumeric
<oper>
;can be up to 16 characters long
1
Short format alphanumeric
<oper>
2
Numeric
<oper>
; GSM Location Area Identification number
AT+CREG Network Registration
Test Command
AT+CREG=?
Response
+CREG:
(list of supported
<n>
s)
OK