A multi-stage time division switch interconnects a plurality of processors that individually communicate over one or more channels at various signalling rates. Any processor may initiate a call and request that a connection be set by the switch. The switch assigns one or more time slots to the call and...http://www.google.fr/patents/US4672604?utm_source=gb-gplus-shareBrevet US4672604 - Time slot polling arrangement for multiple stage time division switch
Time slot polling arrangement for multiple stage time division switch
