A cross connect network is utilized in order to switch packets of information among a plurality of network nodes. Each of the plurality of network nodes generates a multiplexed data signal, where each multiplexed data signal includes several channels. The cross connect network routes the data packets...http://www.google.de/patents/US5107493?utm_source=gb-gplus-sharePatent US5107493 - High-speed packet data network using serially connected packet and circuit switches