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Appendix I.
Set another APN (external SIM)
APN is the name of a gateway between the mobile network and the public
Internet. The default APN is an empty string.
However, some mobile service providers require this string to be set.
Therefore, it is possible to set another APN by:
1.
On a PC, make a text file with the name
extapn.txt
with the
desired APN in its first (and only) line.
2.
Set the C22 in USB mode and copy the file above to the root of
the SD-card.
3.
Reboot. This will configure the internal APN in the
configuration
4.
When succeeded, the file name above is changed to _extapn.txt
