When our house was built there was a phone jack installed in the kitchen and master bedroom. At some point someone installed another jack in the family room. The line for this jack starts at the jack from our master bedroom and goes outside our home and into the family room. My question is, since this new line was spliced from our master bedroom jack will it affect DSL speeds? Does the DSL line need to come strait from the phone utility box on the outside of our home? The line that goes into our DSL router has come from this family room jack. We were experiencing some speed issues so I ran a phone line across the room from our kitchen jack and the speeds increased. So either I've got a damaged line that goes to the family room jack or this spliced line is slowing down the speeds.