I'm thinking of switching to a bundle with UPC from Eircom. Just a question about using the UPC phone system. Presently I have 3 Eircom phone connections in different rooms in my house using three phones. If I switch to UPC do I use wireless technology if I wish to continue with 3 phones in 3 different rooms or do I have to run new cables from the new UPC box on the wall to all 3 new phones?