Sorry for the noob questions. I currently have a 3CX system in a working environment. Works great. I want to test install the Debian version. I don't have a second internet connection so is there a way to install it within my current network with out wrecking my current system. Installed a second router on a different ip range, using my regular network for the WAN side, installed 3CX Debian, but I'm not sure sure how to handle the FQDN part of the install. Will doing it this way cause me trouble for my good working system?