A packet switch has pluralities of incoming and outgoing trunks, a data memory accessible from them in common, and FIFO memories each provided in each of input and output circuits. Data from the incoming trunks is written into and read out from the buffer memory for transfer to the outgoing trunks, on...http://www.google.de/patents/US4788679?utm_source=gb-gplus-sharePatent US4788679 - Packet switch with variable data transfer rate links
