Thanks Paul,
I want the new BT connection upstairs next to the router, hence the reason for taking the lead from the Sky HD box from the back of the house internally (approx. 9m) connecting to a box so that I can switch to an external cable take up on the outside of the house and re-enter local to the new BT box yet to be fitted.
Do I need to change lead types? I believe that the external cale outer coating is toxic and only 1m length allowed indoors.
Thanks again Paul.