Advice on backing a 60GHz link with a private DSL line

RouterOS Beginner Basics
1

Hello,

I’m designing a setup for which a 60GHz radio link will be installed between two buildings.
One building host ISP lines while the “remote” has no ISP line at all.
Building are 60m from each other and I expect a 300Mb/s throughput through this 60GHz radio (Wireless Wire Dish).

There is a private telephony line between these buildings.
With a pair of CO/CPE VDSL devices, I can hope for a 80Mb/s throughput.

What do you recommend for this ?

  1. Using DSL line as a backup with automatic fail over
  2. Using DSL line as a backup with manual fail over
  3. Grouping both lines together ? How exactly
  4. Not using DSL line at all as 60GHz radio outperforms DSL

Best regards

2

With 60m clear LOS you van espect 1GBit with Wireless Wire you don’t need the dish

3

What are the technical downsides of using a Dish instead of a Wire ?