I have a 4G LTE subscription in my country with a feauture to make phone calls, now with the sim the company provide us with B310-s Huwaui modem
This modem also have an FXS port, that you can plug a normal landline phone in it, and make calls using Volte
Is it possible to sniff data that it's made by the modem to make the call or another way so I can make phone calls with my computer or smartphone using a Sip software for example ? ( without having to use the landline phone or some FXO switch)