Electronicswitching system having a time division

专利名称：Electronicswitching system having a time

division multiplex switch controller addressby central control unit

发明人：Anthony J. P. O'Toole,Gordon P. Boot申请号：US06/571442申请日：19840117公开号：US04569040A公开日：19860204

摘要：A control system for a time division multiplex digital switching exchange has anumber of telephony groups located on separate shelves which are interconnected by anintershelf bus. The intershelf bus comprises two address buses and a data bus. Acommon control computer inserts addressing data into two registers in a digital switchcontroller (DSC) which uses that data to control the transfer of data between telephonygroups by way of the intershelf bus. The DSC also includes transmit and receive registersconnected to the data bus which allows the transfer of data to and from the shelves andthe common control computer. Should the common control computer require to readdata from the DSC it addresses the DSC as one of the shelves (i.e., inserts the address ofthe DSC in the two registers of the DSC) to cause the DSC to transfer or read data to orfrom the transmit and receive register.

申请人：PLESSEY OVERSEAS LIMITED

代理机构：Fleit, Jacobson, Cohn & Price

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