These instructions were provided by one of our customer.

1) follow the <a href=“”>same instructions</a> to setup a *SIP* trunk (not an IAX trunk)

2) in pbx web console, create an IAX extension. Make sure to
– enter a secret. This secret will be used later on so make sure to enter it.
– disable dictation service
– set “Record Incoming / Outgoing” to “Never”

3) Create an inbound route that forwards to the newly created IAX extension above

4) create a new virtual fax with the same extension and secret as in step 2)

5) restart asterisk and you’re done

Hope this will help you using our DIDs for FAX.