Asynchronous time division multiplex switching system

Details Asynchronous time division multiplex switching system Asynchronous time division multiplex switching system

1993-09-01

1995-12-12

Hsu, Alpus

Multiplex communications

Wide area network

Packet switching

370 941, H04L 1256

Patent

active

054756804

ABSTRACT:
An ATDM switching system comprises a serial to parallel converter arranged to receive incoming packets of data (which include their own routing information) from several input ports in serial form and deliver them, in parallel format, to a Random Access Memory (RAM) in such a way that the packets form queues within the memory, one for each output port. Packets are then transferred in parallel format, one from each queue in turn, to a parallel to serial converter which delivers them to their respective output ports in serial format. The arrangement is such that when the memory becomes full the system can accommodate incoming packets by overwriting data in the longest queue, a technique that can significantly reduce the total number of packets lost during long term operation.

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