The 2001 International Workshop on Quality of future Internet Services (QofIS 2001) held in Coimbra, Portugal, organized by COST Action 263, is the second of what we expect will become a series of successful QofIS workshops. The previous workshop was held in Berlin in the year 2000. The areas of interest of QofIS cover the design, implementation and provision of Quality of Service, spanning key issues of current and emerging communication systems such as packet-level issues, flow-level issues, network-level issues, architectural issues, and applications. The emphasis of the QofIS2001 w orkshop is on horizontal (end-to-end) as well as vertical (top-down) provision of quality of services, covering all components of end systems and networks, with the aim of identifying solutions enabling feasible and coherent QoS provision. The QofIS2001 cal l for papers attracted 87 submissions from 23 Asian, Australian, European, North American, and South American countries. These were subject to thorough review work by the Programme Committee members and additional reviewers who carried out their work using a specially built conference system, WebChairing, developed in Coimbra by Flor de Utopia, that allowed full control of the submission and reviewing processes. Based on the comments and recommendations of the reviews, the final programme was defined in a Programme th Committee meeting held at the University of Karlsruhe on June 5 , 2001.

Includes supplementary material: sn.pub/extras

QoS for Multimedia Communications.- Design of Optimal Playout Schedulers or Packet Video Receivers.- Constrained TCP-Friendly Congestion Control for Multimedia Communication.- Adaptive Wavelet Video Filtering.- On the Utility of FEC Mechanisms for Audio Applications.- Admission Control.- A Call Admission Control Method for Supporting Telephony Sessions in a Best Effort IP Network.- Integrated Admission Control for Streaming and Elastic Traffic.- Novel Enhancements to Load Control - A Soft-State, Lightweight Admission Control Protocol.- PBAC: Probe-Based Admission Control.- QoS Routing.- QoS Routing: Average Complexity and Hopcount in m Dimensions.- QoS Routing with Incomplete Information by Analog Computing Algorithms.- Profile-Based Routing: A New Framework for MPLS Traffic Engineering.- Differentiated Services Networks.- Towards Better Support of Transaction Oriented Communication in Differentiated Services Networks.- The Olympic Service Model: Issues and Architecture.- Service Differentiation in ECN Networks Using Weighted Window-Based Congestion Control for Various Packet Marking Algorithms.- Two-Differentiated Marking Strategies for TCP Flows in a Differentiated Services Network.- QoS Monitoring and Mapping.- Aguri: An Aggregation-Based Traffic Profiler.- Traffic Handling in AQUILA QoS IP Network.- The TCP Control Block Interdependence in Fixed Networks - Some Performance Results.- Approaches to Support Differentiated Quality of Web Service.- Traffic Engineering.- Understanding the Long-Term Self-Similarity of Internet Traffic.- Network Dimensioning with MPLS1.- DSS: A Deterministic and Scalable QoS Provisioning Scheme.- Invited Program.- Experience with an IP QoS Physical Testbed: Problems and Research Issues.- Affordable QoS in Future Wireless Networks: Myth orReality ?.