Copyright © Sigicom AB 2021
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Appendix I.
Configure APN
This only applies when using a mini-SIM instead if the embedded SIM.
The APN (Access Point Name) is used internally by the mobile network
provider to setup various communication parameters. The default APN is
an empty string.
However, many mobile network providers require the APN to be set or
may suddenly change its settings to require it. Therefore, it is
recommended to set it by:
Ask your SIM provider which APN should be used with the SIM.
On a PC, make a text file with the name
extapn.txt
with the desired APN
in its first (and only) line.
1.
Set the C22 in USB mode and copy the file above to the root of
the SD-card.
2.
Reboot. This will configure the internal APN in the
configuration.
3.
When succeeded, the file name above is changed to _extapn.txt.
If, by some reason the APN needs to be set back to empty, create the file
extapn.txt,
keep it empty and follow steps 1 to 3 form the list above.
