I know FAX is old school, but I need to use it with a court of law.
As I mentioned in another post, I have 5 VOIP accounts with the same provider. So I defined 5 trunks, but basically for outgoing calls I use only one.
Incoming calls are routed to different extensions or ring groups as needed. That’s all fine with pjsip.
Now my question:
How can I define that a call originating from my internal FAX machine extension is using not the default trunk but one where I can optimize the settings for FAX over IP?