Hello, I'm a voip specialist with 10+ years of experience working on the TS department of a US voip company; I can install, troubleshoot and customize many VOIP devices including: softphones, ATAs, IP-phones and PBX systems. I read your project description and I can certainly help you upgrade and setup backup routines on your Freepbx system. Feel free to contact me through chat at any time.
Thank you.