1 Commands can be issued using 3.3v serial on rx/tx pins
11 direct connection with gsm modem
28 *MCGDEFCONT: "IPV4V6","internet"
33 ## read SIM card number
38 +CME ERROR: SIM not inserted
40 ?? hm. we do have sim card inserted!
47 +CGSN: 864823045031648
51 ## check if device is connected
60 ## read current NB network band
68 # other commands from firmware
71 x:+0.161 y:+0.390 x:-0000711 y:-0001718