An asynchronous time-division multiplex digital transmission system includes a switching network having a plurality of interconnection elements. Incoming data cells on respective input lines to an interconnection element during a time frame are temporarily stored in respective buffers and a converter...http://www.google.de/patents/US5228031?utm_source=gb-gplus-sharePatent US5228031 - Interconnection element for an asynchronous time-division multiplex transmission system
