Rearrangeable full availability multistage switching network with redundant conductors

US4654842A · kind A · utility

Inventors

• Giorgio Coraluppi · Pittsburgh, US
• John Driscoll · Fremont, US
• David Jacobs · Simpsonville, US
• Edward Law · Monroeville, US
• Gérald Masson · Morlaix, FR

Key dates

• Filing date: Aug 2, 1984
• Grant date: Mar 31, 1987
• Expiry date: Aug 2, 2004

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04Q3/68
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A rearrangeable fully available multistage switching network having N.sub.T inputs and M.sub.T outputs, preferably where N.sub.T =M.sub.T, comprising a plurality of switching elements arranged in an array of .theta. stages, where .theta..gtoreq.3. The inner groups of stages define a plurality of nested modules where each of the switches in an outer stage is connected to associated subordinate inner modules such that at least one set, f.sub.i, of said connections between stages is redundant, that is, greater than 1.