Just wanted to get some configuration help with setting up 3CX Phone System for a single company with 8 locations. Currently, I have the configuration set as: A paid licensed single 3CX system setup on Windows 2008 R2 Server in a dedicated data center. The 3CX server will also host its own DHCP Server with a Superscope that will distribute IPs across the various locations. We want to autoprovision the phones so we have Option 66 set on the DHCP server. Seven of the locations including the 3CX Server are connected by private line and SIP lines, but there is one location connected through the Internet. Our plan is to just have 6 locations connected to the data center through the private line/sip lines and have them autoprovision across the private WAN. The last location we are thinking about using Proxy setup and did not know how to set this part up yet, but we also want these to autoprovision. I wanted to know if: The setup with the locations connected by private line will work and if there are any improvements that can be made to improve performance or best practices that can be followed. What is the best way to setup the location that is isolated from the others through the Internet connection. Will the Proxy setup work or if there is a better way. I would greatly appreciate any feedback as we will be pushing this out over the next 2-3 weeks, thank you in advance.