I have about 5 jackpoints but only 2 are in use.I have Sky but do not use it is phone line.The modem and fax/phone are connected through a Dynalink ADSL filter to the same jackpoint.I have performed an isolation test and there is no improvement which leads me tobelieve that Windows 7 does not work well with certain nics because I had a solidconnection with my old XP laptop using the same jackpoint