From iOpus Software:
ISPs often disconnect their users when there is no activity detected for a certain period of time. This software prevents that disconnection from happening. The Ã¢â?¬Å?AC-PlugÃ¢â?¬? sends periodic signals that will keep your Internet connection active.The program interface consists mainly of a single ON / OFF switch, it is extremely easy to use and requires no technical knowledge or configuration.AC-Plug runs in the Windows system tray, uses the global Windows Internet settings and does everything automatically.