Patent ID: 6078585
Filing Date: 2000-06-20
Classification: H04L,H04Q

Abstract:
A multistage connection switch which is connectable to an extension switch, comprising:an input stage having at least one switching module with N input/output terminals,an output stage having at least one switching module with N input/output terminals, andan intermediate stage, provided between said input stage and output stage, having at least one stage in which switching modules each having N input/output terminals are provided, the number of the switching modules being a divisor of N and corresponding to an estimated largest switching scale, wherein:each of the output terminals of the switching module in said input stage is connected to a respective one of a plurality of input terminals of one of the switching modules in said intermediate state;the rest of the input terminals of each of the switching modules in said intermediate stage remain unconnected, providing for connection to an output terminal of a switching module to be provided in said input stage for extension;each of the input terminals of the switching module in said output stage is connected to a respective one of a plurality of output terminals of one of the switching modules in said intermediate stage; andthe rest of the output terminals of each of the switching modules in said intermediate stage remain unconnected, providing for connection to an input terminal of a switching module to be provided in said output stage for extension.