We have dsl with att in our house. We own another house, literally next door, about 400ft away. We wanted to get another line in the end house, for high speed intent. At&t says they don't offer dsl at our other house, that the grid ends in the middle of the field and we can't get it at our property right next door .could we just take a cat 5 ethernet cable from one property and extend it to reach next door? Would that work? Other thsn our houses the next houses are a mile away.