Hi,
I am looking for a 4G (if possible LTE Extended) dongle that supports 3 interfaces (tty0,tty1,tty3) for calls, sms/mms sending and data (internet access) when we use modeswitch. My goal is to create a Raspberry that is connected to the internet in Switzerland to redirect calls via Asterisk to my SIP server, and redirect sms and mms by mail. I can program that. I only need a dongle that got those three interfaces.
Thank you !