I recently signed up for Virgin phone in the house I have moved into but the line is completely dead - no dial tone. I have tried three handsets and I know they were working at my previous address. These are plugged directly into the Virgin Media branded NTE socket next to the coaxial broadband/TV outlet.
I also have an Openreach NTE but tracing the wire leads me to think that the cable supplying that comes from the Virgin Media one.
I have no idea what the phone number is either; if I had a dial tone then I would try phoning my mobile or I could try phoning that number to see whether it rings.