I want to be have ethernet in my room because the wireless connection isn't good enough to use Nvidia GeForce Now. My house was built in 1998 and has wiring for phone but not ethernet. I was wondering if there was some way to send an internet signal from my router through the phone line to the phone line in my room. I have xFinity WiFi and the router has four ethernet outputs. Near the router is a unused box in the wall with two ports labeled "phone" and "broadband". The xfinity service comes through a coax cable. Is this possible?