BT80b RF3 allows it to be used on lines which carry ADSL VDSL signals on the Openreach network (i.e. Sky, Talktalk, Plusnet, BT, etc. THIS IS A UK DESIGNED ITEM BY BT OPENREACH -. ONLINE VIDEOS CAN BE FOUND ON "HOW TO INSTALL THE BT OPENREACH 80b BLOCK RF3". ).
