I found many articles on the Internet on how to ensure the interaction of a 3g modem and Asterisk (this is mainly proposed to be done through the chan_dogle module).
Tell me, please, how can you "make friends" with Asterisk 12 with a gsm CINTERION mc52i modem?
Ubuntu 14 is used as the operating system.

    1 answer 1

    https://github.com/bg111/asterisk-chan-dongle

    In this link there is a list of modems, and a driver for them, I have been working on 3 servers for 4 years already.