Course contents: Current trends in core and metropolitan networks. Introduction to PDH and to SONET/SDH, reasons for their introduction and network evolution; principles of operation. SONET/SDH networks, main building blocks, topologies, examples. Protection/restoration. NG SONET/SDH and packet-overSONET/SDH. Efficient packet transportation mechanisms, GFP, VCAT, LCAS. ΟΤΝ; ASON;MPLS, MPλS, GMPLS.

Assessment: Written exams at the end of the semester.