I've got a phone line on the blue pair, and VDSL on the brown pair. Leaving the orange and green pairs available.
But when I try and connect a router in one room, and a laptop in the other room, I don't get a connection and also the phone line goes off. VDSL stays on.
Why is it even touching the blue pair? I thought Ethernet only used the green and orange pairs. Or have I got something wired incorrectly? I haven't seen any indication that I have.