the reason that sky insist on a landline for multiroom is that lots of people ordered mulitroom for the extra sky box then gave it to their neighbour for them to get sky also. THe landline is to make sure that the multiroom box stays connected to the correct landline so that wont be conned anymore!!! im in the ntl trap at the moment and cant get sky + without a landline. they have no bother setting up ordinary sky but kjust not sky+ or multiroom