Thanks.
Please clarify. We have BT Infinity for Business, so fibre to the roadside box but the last part of the circuit is copper and we have the VDSL Modem (white Openreach box) just before the BusinessHub3.
When you say if it's Fibre it's pppoE do you mean Fibre to premises or like in our case Fibre to the roadside box and then copper for the last 100m ?