Hi Waldo,
It looks like the preferred way to handle STK with IFX modems is to
use a dedicated mode where the modem handles most of STK commands and only a few remaining
commands are passed on to the apps processor for further handling.
as far as I know, the IFX firmware also supports what they call raw
mode. That mode is purely PDU based. Why just not use that one and let
oFono do the hard work. Seems to be working perfectly fine for MBM, STE
and Calypso based hardware.
Regards
Marcel