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Le réseau de télécommunications est un système global d'équipements et de moyens qui assure les connexions entre les utilisateurs des services de communication, avec la transmission et la réception des informations concernées. Il s'agit d'un ensemble de nœuds de communication, dans lesquels des procédures de traitement ont lieu pour la transmission...
Ce volume est le résultat d’une activité soutenue et relativement à long terme des trois auteurs dans le domaine de la modélisation, visant à évaluer la qualité du service dans les réseaux de télécommunications, qualité définie selon l’UIT-T normative, Recommandation E. 800, comme « l’effet résultant de la performance d’un service qui détermine le...
Defining means and methods designed to ensure the quality of service (QoS mechanisms), which is the objective of the first part of this paper, involves a series of analytical or experimental modeling activities (for example, by simulation) and analysis which, in turn, involve various mathematical disciplines, such as probability theory and statisti...
This volume is intended especially for the students of the Faculty of Electronics, Telecommunications and Information Technology of the Polytechnic University of Bucharest, from the specialization "Communications", its content being structured according to the analytical programs of several subjects, namely "Switching Techniques and Systems", "Traf...
”1+1 protection” represents one of the latest methods in MPLS networks. Such method is available for premium customers and consists in traffic duplication by two different paths, in order to prevent informational link from failure. In this article, is presented the influence of this mechanism on the quality of service (QoS). The metrics which we re...
Admission control is one of the key functions performed by the management of services and network resources in order to guarantee the QoS requirements of different types of traffic flows. In the case of non-elastic traffic streams, the admission control is typically based on a formula derived by assuming that the traffic aggregate may be approximat...