Siemens TC37 Module At Command Reference page 91

AT Command Set
Reference
GSM 07.07
Example 1
Example 2
TC3X_ATC_01_V04.00
Response
OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameters
0 automatic mode; <oper> field is ignored
<mode>
1 manual operator selection
<oper> field must be present, <format> can only be = 2
2 manually deregister from network and remain unregistered
until mode 0,1,4 is selected
3
set <format> for read command +COPS?
4 combination of manual/automatic mode;
if manual selection fails, ME switches to automatic mode
(<mode>=0). (<oper> field must be present)
<oper> operator as per <format>
<format> 0 long format alphanumeric <oper>; up to 16 characters
2 numeric <oper>; GSM Location Area Identification number
Note
To query the present status of ME's network registration using the test
command:
AT+COPS=?
+COPS: (2,"D2",,"26202"),(3,"E-Plus",,"26203"),(3,"T-
D1",,"26201"),(3,"Interkom",,"26207"),,(0-4),(0,2)
OK
Registered operator is D2. The other operators are present in the network, but
not allowed to be used with the current SIM card.
To query the status of the ME's network registration using the read command:
AT+COPS?
+COPS: 0,0,"D2" (command returns mode, format, registered operator)
OK
Attempt to manually select a forbidden operator:
AT+COPS=1,2,26203
OK
If the selected operator was not allowed, the ME is now unregistered. The
read command will return only the mode, but no operator:
AT+COPS?
+COPS: 1
In this case, the test command returns only that the desired operator is
available (<stat=1). Nevertheless, the registration is not successful. Please
use the AT+CREG command (Chapter 4.37) to verify the registration status.
AT+COPS=?
+COPS: (1,"D2",,"26202"),(3,"E-Plus",,"26203"),(3,"T-
D1",,"26201"),(3,"Interkom",,"26207"),,(0-4),(0,2)
OK
AT+CREG?
(where 3 = registration denied)
+CREG: 0,3
OK
Page 91 of 204 29.05.2002