Introduction: Basic concepts, Poisson process, Markov processes, Birth-death processes Purpose of Tele-traffic Theory, Tele-traffic models, Classical modelfor telephone traffic, Classical model for data traffic. Modeling: Telecommunication networks, Network level: switching and routing, Link level: multiplexing and concentration, Shared media: multiple access. Circuit switched network modeled as a loss network, Packet switched network modeled as a queuing network. Traffic measurements, Traffic variations, Traditional modeling of telephone traffic, Traditional modeling of data traffic. Performance analysis: Simple teletraffic model, Poisson model, Erlang model. Binomial models, Engset model M/M/1 (1 server, waiting places), M/M/n (n servers, waiting places). Introduction, Generation of traffic process realizations, Generation of random variable realizations, Collection of data, Statistical analysis. Network planning and dimensioning: Introduction, Network planning, Traffic forecasts, Dimensioning. Traffic management: Traffic and congestion control in ATM; Introduction, ATM technique, Service categories and traffic contract, Traffic and congestion control in ATM, Connection Admission Control (CAC) and Usage Parameter Control (UPC), ABR flow control. Traffic and congestion control in the Internet: Introduction, IP-networks, Traffic and congestion control in the Internet, QoS architectures in the Internet.