Entry 3 in the preferred list of the operators is deleted.
AT+CPOL=3
OK
Operator identifier 22603 is inserted in the next free location of the list.
AT+CPOL=,2,22603
OK
Format of <oper> in the read command is changed (only 2 is allowed up to
now).
AT+CPOL=,2
OK
Operator Identifier 22603 is inserted in the 4th position of the list.
AT+CPOL=4,2,22603
OK
Available range for <index> is 1 to 16, for <format>= 2.
AT+CPOL=?
+CPOL: (1-16),(2)