Their Calnex Sentinel equipment they use for measuring their signal is probably a lot more expensive than that (see https://calnexsol.com/en/product-detail/1033

Their Calnex Sentinel equipment they use for measuring their signal is probably a lot more expensive than that (see https://calnexsol.com/en/product-detail/1033-sentinel https://calnexsol.com/en/product-detail/1033-sentinel). You wouldn't want to build your entire monitoring system on top of that and be forced to deploy those at hundreds of datacenters around the world.