Hello, I'm a voip specialist with over 10years of experience working on the TS department of a US voip company; I can install, troubleshoot and customize many SIP devices including: softphones, ATAs, IP-phones and PBX systems like Asterisk/FPBX. I read your project description and I can certainly help you fix your asterisk files as well as build your custom admin panel, but what exactly you need to fix and what features you need for the admin panel. You may contact me at any time through chat.
Thank you.