Ethernet Linx Device for Ooma Telo

Hi, forgive me if this has already been asked. I have an Ooma Telo for my home phone, and I’d like to install a phone in my barn so I can answer the phone out here, but DECT reception is spotty at best because I’m just far enough away and my barn has a metal roof.

What are the chances we could get an Ethernet based Linx device that works on the same subnet as the Telo? I already have a 1Gbps Ethernet link via radio out to my barn, why can’t I just use a native Ooma device out here instead of rigging up a janky VOIP solution using Telo’s analog line?