Landline conflict with MOCA adapters?

What ^^^^^^^^^^^^^^^ He said. Moca uses RF over coax and you use an rf to ethernet (basically what a modem does, but on a different frequency), on other active coax connections in your home. Another method that people use is POWERLINE adapters. This uses an ethernet to powerline at your router, and a powerline to ethernet/WiFi in another room, to extend your connectivity, and create a mesh WiFi network as well.