the present invention provides a network which includes a server , power bus , and at least a single terminal for asymmetrically communicating with the server over broadband and narrowband channels using modem technology . broadband communication may include transmitting video change data for display on at least a single terminal monitor . narrowband communication may include transmitting keyboard and mouse data to a server for control of application programs either prior to or after runtime . the use of this asymmetric modem communication techniques , as opposed to network technology , allows a large amount of data to be transmitted over a limited bandwidth network , such as home powerlines .