I am trying to send faxes using t.38 on trunks that supports it and VitalPBX will reject the t.38 invite.
I am able to send small documents (using regular g.711) but when it gets more and more unstable after 2 pages obviously.
Trunks providers I tested with are Telnyx and VOIP.ms’ special fax trunks
These are my current settings:
These are the Endpoint settings
What am I doing wrong? Thank you for your assistance