European Concerted Research Action COST 285 Modeling and Simulation Tools for Research in Emerging Multiservice Telecommunications -- Challenges in Design of Next Generation Networks -- An Empirical Approach For Multilayer Traffic Modeling And Multimedia Traffic Modeling At Different Time Scales -- Multimedia Traffic Behavior: Analysis and Implications -- Traffic Modeling and Prediction using ARIMA/GARCH Model -- On the Scalability of Fluid Models of IP Networks Loaded by Long-lived TCP Flows -- The Optimal Dimensioning Of Multi-Service Links -- A Network Management Framework for Emerging Telecommunications Networks -- Challenges of Tool Development Facing Rapidly Changing Market Demands -- Packaging Simulation Results With CostGlue -- Modeling Grids in (Near) Real Time -- Network Simulator NS2: Shortcomings, Potential Development and Enhancement Strategies -- Integrated Simulation of Communication Networks and Logistical Networks -- Evaluating Vehicular Networks: Analysis, Simulation, and Field Experiments -- A Monte Carlo Type Simulation Approach For Performance Evaluation In Optical Burst Switched Networks -- Simulation of Radio Channel and Modulation Schemes Using Markov Chains -- A Component Approach to Optical Transmission Network Design -- Fast Dimensioning of Packet-Switched All-Optical Networks -- Quality Assessment of Modeling and Simulation of Network-Centric Military Systems -- Using Fuzzy Value Tree Analysis to Support The Verification, Validation, and Accreditation of Models and Simulations -- On The Use Of Simulation For The Improvement And Measurement Validation Of A Smart Antenna Prototype -- The Need for Credible Modeling and Simulation in the Context of the Network Based Defense -- An Analysis Tool for Markovian Traffic Model Validation -- Some General Terminal and Network Teletraffic Equations for Virtual Circuit Switching Systems.