On Premise DSL

Does anyone know of a good way to re-use single twisted pair phone cabling for near gigabit Ethernet speeds?

I would love to be able to use g.fast technology over existing analog phone lines, in a sort of "on premise" dsl situation, for a customer of mine that has a really robust analog phone network between closely connected buildings, but doesn't want to re-run cabling.

I imagine that you could just us a G.fast DSLAM and CPEs, but if there was just a point-to-point G.fast bridge of sorts, that would solve the specific issue I am thinking of.

Any thoughts?

Thanks!