Siemens M20 Terminal Technical Description page 128

Siemens Information and Communication Products
AT^SPLW Write an entry to the preferred operator list
Test command Response
AT^SPLW=? TA returns the whole index range supported by the SIM.
^SPLW: (list of supported <index>s) OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameter
see execute command
Execute command TA writes an entry to the SIM list of preferred operators (EFPLMNsel) at location number <in-
AT^SPLW=
dex>. If <index> is given but <oper> is left out, the entry is deleted.
<index> [,<oper>]
<index>
<oper>
Response
OK
If error is related to ME functionality:
+CME ERROR: <err>
Reference Note:
GSM 07.07: <oper> is a 5 digit number. 3 digits country code and 2 digits for the network provider
AT+CPOL
Version 8 dated 15.03.00
location number
string type; operator in numeric format; GSM location area identification number
AT command interface
A
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