The BT line in my property terminates into what is obviously a secondary extension socket, rather than a master socket. Probably been DIY'd on at some point. Phone lines work fine, broadband works fine. As such, I'm not sure whether to worry about it too much but 1) is it likely to be missing safety elements (i.e. surge protection) and 2) would I notice any improvement in broadband speeds if I replaced it with a proper master socket with built in filters?
Thanks
Thanks