A method of switching synchronous and asynchronous data packets through a multi-stage interconnection network (MIN), so as to insure that packets with the highest assignable priority level will never be blocked at any stage of the network. More specifically, this invention relates to a method of switching...http://www.google.de/patents/US4679190?utm_source=gb-gplus-sharePatent US4679190 - Distributed voice-data switching on multi-stage interconnection networks