IP QoS evaluation using interoperability of differentiated and integrated services

Both QoS architectures, Integrated and Differentiated services, have their own advantages and disadvantages. By combining the advantages from both models it might be possible to develop a flexibile system which would provide predictable services. We present the network architecture that provides end-to-end quantitative QoS evaluation consists of IntServ regions at the access of the network and Diffserv regions in the core of the network. The paper describe the mathematical model and simulation results, which explore what kind of quality of service the combination of Integrated and Differentiated Services can offer.