The Ecole Nationale Supérieure des Télécommunications in Paris
France's foremost grande ecole for telecommunication and computer network studies.
Telecom is a smallish college of about 1000 students and postgraduates. This gives it a fairly intimate, informal feeling.
The lessons at Telecom are taught by both lecturers who are experts in their fields and enthusiastic guests from leading industry names. They also last three hours! It is probably impossible to concentrate for this long, especially in French. (Unless you happen to be French, I suppose)
They have a web site - http://www.enst.fr