Multiple communication bus network

Abstract

AbstractA multiple communication bus network (MCNET) is proposed as a structure for a nationwide trunk network and its optimum method of circuit regulation and size of the network are discussed. MCNET is a network in which uniform, large‐capacity transmission paths achieve bus connection of plural exchange offices in a region and in which interoffice traffic is directly switched on transmission paths in bus form. Between different regions, the network is hierarchically structured with representative exchanges in regions and bus‐formed transmission paths between them. This paper describes the fundamental concepts and network structure. The circuit regulation method by which circuits are assigned semipermanently to each originating exchange is advantageous with respect to adantability for traffic loading and ease of regulation. The capacities of the MCNET are investigated by introducing a “traffic diffusion index” and it is concluded that the erlang capacities for the RA, DA and TA switching systems are in the ranges of some ten thousands to hundred thousands, from ten thousand to some ten thousands and from six thousand to nine thousands, respectively, and that the capacities of the transmission paths are also in erlang ranges of from 300 thousand to one million, from 200 thousand to 600 thousand and from 40 thousand to 60 thousands.