Hi Guys,
This will not work if you are using a BT router, you need one which can do port clamping to a greater degree that ours.
The reason for this is essentially that the two products are not natively compatible. It has to do with how fibre handles packets of data as well as data compression.
If i were in your shoes I would borrow a Third party router, if any one you know has a spare one, open all of the ports an enable port clamping.
If this works then you can get a similar router without wasting any money.
Hope this helps
Burkem5