2 weeks ago I got sky HD fitted and last week my phoneline went dead, the internet refused to connect (when it did, it was so slow). Does anyone know how the telephone connections work, I am with BT? I don't use the Sky broadband as I am with another provider. My modem lights up and also the test port in the telephone/ADSL box doesn't work. Anyone ideas - I don't know whether to call out Sky or BT.