Search for: [Description = "We consider a two\-link communication system with restricted accessibility that services Poisson arriving calls of many service\-classes and propose a multirate teletraffic loss model for its analysis. In a restricted accessibility system, call blocking occurs even if available resources do exist at the time of a call’s arrival. In the two\-link system under consideration, each link has two thresholds \(offloading and support\) which express the in\-service calls in a link. The offloading threshold represents the point from which a link offloads calls. The support threshold \(which is lower than the offloading threshold\) defines the point up to which a link supports offloaded calls. The two\-link system with restricted accessibility is modeled as a loss system whose steady state probabilities do not have a product form solution. However, approximate formulas for the determination of call blocking probabilities are proposed. In addition, we also provide a corresponding analysis related to the case of quasi\-random traffic \(i.e. traffic generated by a finite number of users\). The accuracy of all formulas is verified through simulation and is found to be quite satisfactory"]

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