Get online support
Hi @dowdie . Is your internet working through AX5400 router?
If VOIP is not working, TPG has mis-configured their VOIP server or your router. They can download new firmware once you are online.
You can configure Google as Access Point, DHCP disabled. You can assign a fixed ip address in router for Google MAC address.
We'll help get your VoIP working, then we'll help out with Google WiFi. Send through a private message so that we can take a closer look, @dowdie.