"Hitchhiking on the data highway? - Get connected in Sofia!"
"How do the emails travel in the Network? By bus? Hitchhiking? What do you need to connect Sofia and your city? 10 000 km wires? What is going on when you pick up the phone? Signals from the aliens? What do SS7, SDH, ISDN, VoIPv6 and many other abbreviations mean?
Read more at: http://events.bestsofia.org/summercourse08/