Test command

The test command returns a list of supported <snt> values.

Response syntax:
+CGSN: (list of supported <snt>s)

The test command parameter and its defined values are the following:

<snt>
0 – Respond with <sn> (default)
1 – Respond with +CGSN: <imei>
2 – Respond with +CGSN: <imeisv>
3 – Respond with +CGSN: <svn>

Example:

AT+CGSN=?
+CGSN: (0-3)
OK