Distributed packet switching system

Details Distributed packet switching system Distributed packet switching system

H - Electricity

04

Q

344/28

H04Q 3/42 (2006.01) H04L 12/56 (2006.01)

Patent

CA 1238969

- 1 - DISTRIBUTED PACKET SWITCHING SYSTEM Abstract: A distributed packet switching system in which a centralized switch is not used and, instead, each transmit- ting port contains the intelligence required to derive and then insert the destination port and station addresses into the header of each packet to be transmitted by the port. The port circuitry that derives the destination addresses operates under control of a central controller which, prior to the setup of each call, receives information identifying the transmitting port and calling station as well as the destination station number dialed at the calling station. The controller processes this data to derive the destination port and station addresses. The derived addresses are sent to and stored in a RAM in the transmit- ting port. The RAM outputs the destination port and station addresses for each packet subsequently transmitted by the port on the call.

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