Blocking in an ISDN switch

Broadband optical networks which carry a wide range of traffic classes in an integrated fashion are considered. The focus is on so-called stream traffic in which each class is allocated different quantities of bandwidth for the duration of a call. An exact analysis of the blocking conditions experienced by different classes of traffic demanding transmission through an N₁×N₀ switch is presented. No particular structure is assumed for the switch besides its capability of resolving output port contention by rearranging the input traffic. A two-dimensional generalization of an analysis for a single trunk is considered. Its efficiency rests on the linearity of the necessary computations, thus the relative independence from the dimensionality of the switch