Disclosed is a wide bandwidth self-routing switch. One-to-one, one-to-many, and many-to-many modes of communications are achieved with time multiplexed signal packets of multi-service users with a system having a bank of demultiplexers which demultiplex incoming signals and supply them to a broadcast...http://www.google.de/patents/US4542497?utm_source=gb-gplus-sharePatent US4542497 - Wideband digital switching network
