Hi there. I have a filter plugged into my main socket here at home. Into the filter is the adsl modem then next to that the connector coming from sky. That has two holes in it, in one is my bt line for my home phone and the other is connected to my modem in my computer here so if the broadband fails then I can still go online with dial-up. There is a thread from a while ago with some pictures of my set-up, someoone was asking a similar question and I posted my set up learning that it was wrong in doing so and it is now changed. Good luck.
