Hi @CHRISSO007 . My thoughts on some of your proposal. Do you have this network set up already in some fashion or is this what you envisage having? Some things from looking at the manual: it shows an "adapter" unit is connected to the main router; one or more "extenders" are plugged in around the house. Would the slave upstairs use an adapter or extender? The AX11000 wifi might be strong enough for all upstairs. I thought I saw somewhere that the powerline devices have to be on the same electrical circuit (so it doesn't go back thru switchboard), but I can't find that now.   To use TPG's VOIP function, the VR1600 has to be in DHCP mode and be connected to the telephone wall socket. So AX11000 would be in access point mode (DHCP disabled). Set its ip address to 192.168.1.2. Connect the cable from VR1600 (from the extender) to the WAN port in the first instance. If doesn't work, use a LAN port. At this point, a device on each router should be able to connect to the admin of the other router. You should check if the AX11000 OpenVPN server can be enabled in access point mode. The VR1600 would have to port forward whatever port you use to the AX11000, which would have its own ip address. (If you don't want VOIP function, you could replace the VR1600 with something that does have OpenVPN.) My understanding is that OpenVPN is a server to allow you to access your home network from the internet, eg. network attached storage, CCTV camera. You also install OpenVPN client on remote device. You might want the opposite function. Install client software on your devices to direct all device network traffic through to the remote VPN server.   IP addressing. Every device will be on same subnet as Master (VR1600), ie. 192.168.1.x. I see some 192.168.0 and "10" addresses. The "Internet Gateway" ip address is something in the network outside. Load testing. Set up each router in stand-alone mode. Connect a computer by cable to each one in turn. Do these ping tests. ping -n 10 192.168.1.1 ping -n 10 -l 32000 192.168.1.1 (hyphen small L for length) Do the tests again when both routers are directly connected. Use a computer connected to slave to ping master. Then connect both routers through powerline. Do ping tests again. This should give an idea of delays to be expected.   ... View more

Hi @CHRISSO007 . There are other routers with phone ports but you have to use the TPG-supplied VR1600 to use TPG's VOIP service. TPG removed the VPN function from the current firmware version (build 200810) for no valid reason. ... View more