Linkload characterization of an asynchronous nodal network support graph

New architectures conception in the ISDN (Integrated Services Digital Network) finds an original switching solution which implements multirates and multiservices applications: asynchronous time division switching. Using this technique Alcatel has studied a nodal structure so that the exchange looks like a graph of which nodes are elementary switching matrices. Such a graph is so called ‘Asynchronous Nodal Network’ (ANN). This paper presents an operational method to compute inter-nodes linkloads. Topological structure of the ANN support graph allows to define and calculate topogical factors of which applications are: sizing, routing, graph extension, structure choice etc. This method is applicable to every graph of which nodes are injecting traffic towards the other nodes and through the whole network.