Prolong the idle time of an established network connection before the session is suspended using a Group Policy setting. On a single computer such as, Windows 7, an inactive network connection to a shared folder residing on a server is suspended after 15 minutes. However you can modify this setting through Group Policy settings.
Read more here – http://www.windows7library.com/blog/uncategorized/prolong-the-idle-time-of-an-established-network-connection-before-the-session-is-suspended/
