Actually from what I can find out your VoIP (Cable telephone) only has a pass through and does not have a router. If I were setting up a network with the equipment you have listed I would remove the wired router and place a Ethernet switch after it and allow it DHCP feature to assign LAN IP addresses. You asked. I just like things clean. If your routers all get set back to the default you will have to re-configure them. As a wireless router would be your best move. You can pick on up for about $30. http://justdeals.stores.yahoo.net/wgt624nar.html