I've just bought a house which I have gutted out so I thought I'd have Sky Tv points in 3 of the rooms then feed the twin wires from each of the rooms to an airing cupboard under the stairs.

I'm planning on getting Sky multiroom so I'll have a box in 2 of the rooms and the third room I'll use an old Sky HD box for freeview.

My question is how would I connect the 3 twin wires in the airing cupboard to the output from a dish? Is a multiswitch required?