VDSL

We are getting our TV, phone, and internet all from the phone company.  Its a little weird I'll admit.  The phone and internet is ok, its the TV I don't completely understand.  Basically we have 1 box that does internet and phone.  Supposedly, this one box can provide digital TV for up to 3 TV's using regular cable lines already in the house.  I'm not sure how that works since the one TV we have now has to have a box to get a picture.  Anyway, once we get a second TV for the bedroom I'll figure out how all of this works.