How to alter udptl.conf?

I had to alter udptl.conf to get my fax working. I couldn’t find any freepbx interface to do this so I did it manually. Now freepbx complains “Module: Core, File: /var/www/html/admin/modules/core/etc/udptl.conf altered”. Is there a place in freepbx to edit udptl.conf?

use udptl_custom.conf

I already did that but now how to I get rid of the security warning?

force download core.

Thank you!!! Worked perfect!