To do so, Amahi Energy Saver regularly scans for connected clients. If no client is connected, the system suspends after a configurable period.
Amahi Energy Saver also scans checks shares. As long as shares are accessed, the server does not suspendssuspend. If set up to do so, Squeezeboxserver is monitored to prevent suspend while Sqeezeboxes Squeezeboxes are turned on.
When the system is to be used again, simply wake it up with WOL (ref. http://en.wikipedia.org/wiki/Wake-on-LAN). There are many tools to generate WOL packets, and it is even possible to wake your server over the internet (good link: http://www.wakeonlan.me/).