If you’re interested in system administration and would like to learn everything there is to learn about VoIP while looking at one of Switzerland’s most beautiful landscapes (a view onto the Rhine river from 1300 meters above sea level is right outside your bedroom window), please register for Admincamp #2: VoIP.
Admincamps are weekend events where professionals teach you a specific technology in an intense workshop. Everything you learn here has been tested in real environments and is in daily use somewhere, so you won’t just learn theory. You get to try the technology first-hand, and after each day’s courses there is time to get to know the others.
These camps are unique events in Switzerland and you should certainly take a look.