Wireless Joint

I think I figured it out, in Telit lm960 software user guide it states "Suppose that the 4G Technology is present on the air. Use the command AT+WS46=28 to force the module in 4G mode." In the AT command reference it is reported with a very technical terminology and I missed it. So for LTE...

I also asked at the sierra wireless forum and a forum user gave a workaround for the issue ! It seems that the modem exposes the AT serial interface but the driver does not recognizes it. I:* If#= 4 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=30 Driver=(none) E: Ad=84(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms ...

A note for people using any lte modem with custom lte connection scripts on casual Linux distributions. After upgrading my Ubuntu 20.04 suddenly I had all sort of issue with the at commend serial interface. Minicom hang during the session , output of at commands was truncated e.t.c. I got suspicious...