Those are entirely different technologies. Let's hear more about your internet service and the old gear model numbers.
I recently bought a Belkin AC1200 router from my local Walmart. The router that came with our internet subscription is nearly 5 years old and I believe it is starting to go bad so I figured it would be a good time to upgrade. One issue Ive ran into is that while the phone line connects to the Ethernet port on the Belkin Router it does not establish a connection to the internet. I do not know if the Belkin router is non compatible with the modem line or if I needed to also upgrade the modem box to include an ethernet outward port to be able to connect it to the Router.
If anyone can give me some suggestions on this it would be greatly appricated.