Fax call drops undexpectedly


We have an issue sending a fax to a specific fax number from asterisk. Faxes to other phone numbers go through successfully, but this number is always failing. Faxes sent to it from fax machines via the same phone line also goes through successfully.

Asterisk does not return any errors on that calls, so we could not get any idea what’s wrong

Asterisk fax debug logs are here https://www.dropbox.com/s/nixycedwvy9tlrb/bugfixLogs.txt?dl=0

Is there anybody who can spot a light on why the fax is failing and suggest a hint on what we can try to resolve the issue?