TY - CPAPER AU - Tadeusz Czachórski AU - T. Nycz AU - M. Nycz AU - Ferhan Pekergin AU - Tadeusz Czachórski AB - Classical Erlang and Engset formulae determining the availability of channels, loss probability, and characteristics of overflow traffic are still use in telecommunications. Moreover, they are also interesting for traffic management in mobile networks and in Internet. They are based on the assumption of Poisson flows and exponentially distributed time of connections. By means of diffusion approximation queuing models, we extend these results to the case of general distributions and transient state analysis. BT - Information Sciences and Systems 2014 LA - eng N2 - Classical Erlang and Engset formulae determining the availability of channels, loss probability, and characteristics of overflow traffic are still use in telecommunications. Moreover, they are also interesting for traffic management in mobile networks and in Internet. They are based on the assumption of Poisson flows and exponentially distributed time of connections. By means of diffusion approximation queuing models, we extend these results to the case of general distributions and transient state analysis. PB - Springer International Publishing Switzerland PY - 2014 EP - 249–256 T2 - Information Sciences and Systems 2014 TI - Traffic Engineering: Erlang and Engset Models Revisited with Diffusion Approximation ER -