I am making Asterisk PBX over Orange Pi - 2g IoT, using standard Ubuntu Server 16.4 available on Orange-Pi website (http://www.orangepi.org/downloadresources/orangepi2G-IoT/orangepi2G-IoT_b0408713aa11652927416.html). Everything is working fine, but I am stuck on two issues,
a. How to add built-in GSM module of Orange Pi 2g IoT board in asterisk, so that A GSM trunk call/text can be transferred on SIP extension. I know chan-dongle, but asterisk is not detecting GSM module. I ahve tried different versions of asterisk.
b. How to change IMEI of Orange Pi 2g IoT
Looking for solutions