Abstract: The asynchronous time division network transmits data by way of high rate bearers. The data is divided into fixed length packets. The network comprises a switching matrix having a number of input and output ports arranged in columns. Each data packet is routed from an input port to a defined output port via addressed switching nodes. Each node has a queueing means, and each queueing means of each output column is tested and priority is given to the first queueing means tested which holds more than one packet.