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Quality of service (QoS) can be defined in many ways and can include various aspects and performance metrics. Assessed QoS reflects customer experiences about service and expectations in terms of costs, support of innovative features and return of investments. The adoption of a solution where voice and data are integrated into an IP-based network infrastructure leads users to a new degree of satisfaction having a bad impact on users' opinion in terms of Assessed QoS. In this paper, we present a practical case study of telecom convergence implemented into the university campus sites scattered throughout the metropolitan area of Catania. The QoS factors which have been considered in order to decide the adoption of a technical solution based on voice and data integration are also pointed out.

In this paper a management architecture for connection-oriented services in a Distributed Queue Dual Bus (DQDB) MAN, in which channel access is exclusively queued-arbitrated, is proposed. Use of only the asynchronous information transfer mode for the integrated transport of voice/video/data services is assumed to facilitate future integration between MANs and B-ISDNs. Using a network architecture in which there are functional blocks performing adaptation functions for connection-oriented services, the authors describe a set of management processes needed to manage the node adaption blocks, services and resources assigned to them. In the description of these processes, the ways in which network resources are requested and assigned is formalized, and a certain quality is guaranteed in the connections.