Manage sending FAX in a queue. Sending a new FAX will go into the queue as Waiting. Updated to send once they have succeeded or failed after multiple attempts.
Make sure to upgrade to the latest FusionPBX version.
Then run the following commands to install as a service
cp /var/www/fusionpbx/app/fax_queue/resources/service/debian.service /etc/systemd/system/fax_queue.service
systemctl daemon-reload
systemctl enable fax_queue
systemctl start fax_queue
or as a cron job
crontab -e
* * * * * cd /var/www/fusionpbx && php /var/www/fusionpbx/app/fax_queue/resources/job/fax_queue.php
Be sure all FAX Queue category settings are configured properly within Default Settings, or emails will fail to send properly.