This course covers traffic engineering in communication networks. Mathematical fundamentals of traffic theory and queuing theory are also covered in this course. The basic models of loss and delay systems are discussed. Links and nodes dimensioning for circuit switched network and packet network. Characteristics of overflow traffic are studied. Access and core network design problems. Network optimization criteria and models as well as integrated networks are studied. Mathematical fundamentals of multi-rate systems theory are discussed. Link models for multiservice network. Call admission models: resource reservation, threshold systems, bandwidth compression systems are covered. Qos in Virtual circuit switched networks. Variable bit rate sources. Self-similar sources, bandwidth discretization and elements of broadband networks dimensioning are also covered.