BLOCKING IN TANDEM ISDN LINKS

The context of the problem is broad-band optical networks which carry a wide range of traffic classes in an integrated fashion. The focus is upon so-called stream traffic in which each class is allocated differ ent quantities of broadband for the duration of a call on an equal sha ring policy. An exact analysis of the blocking conditions experienced by different classes of traffic demanding transmission through a netwo rk with the star or the ring topology is presented. Thus, we calculate blocking probabilities on tandem links by means of a recursive relati on that considerably simplifies the complexity of the problem without ignoring the interdependencies among links. Being a solution to a mult iple classes-multiple links blocking problem, the present work is a mu ltidimensional generalization of a well-known analysis for a single tr unk. The efficiency of the solution lies on the linearity of the neces sary computations.