I have Zyxel prestige 128 plus ISDN router for connecting to ISDN internet and sharing on local area network. It is configured to automatic login to ISP when demanded from client computer on LAN. It is configured to disconnect automatically after 100 sec idle time but it automatically dials any time and ramain connected. I m sure that time nobody demanding internet connection. I have to power off at night because of this problem. Could someone suugest some solution?