A mini PBX for a small office or a campus, using Asterisk over Orange Pi 2g IoT based builtin GSM module. A 10$ PBX will allow transfer of calls over SIP within a covered wifi zone.
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.
Hello, I want to build something similar. Have you managed to add the built-in GSM module ?