We have a Virgin Media wireless router set up in the standard format. I want to boost the signal of the wifi in another room + have a cabled connection in, and in figuring a way to get an ethernet cable to that room, I found the room has a telephone port in the wall, and wondered if I can use that with a 2nd router (instead of connecting 2 routers together with ethernet).
51 Answer
This can be possibly be done.but is not very practical as it requires extra pairs in your house to be connected - which is common but not guaranteed. It also requires changes to the jacks/cabling to expise one of the additional pairs, but mostly because its expensive and difficult for someone at your level. I would look into ethernet over power (eg "powerline" devices) or use WIFI or pull another cable as a more viable alternative
If it is "do or die" you can get deviced which "convert" ethernet to single pair and back - essentially how DSL is delivers Internet to msny homes, probably including yours.
Not a product recommendation +just googled it), but a pair of devices like might do you.