Importance

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Abstract

An ATM switch accommodates a plurality of input lines. Conversion controlling units are disposed corresponding to the input lines. Each of the conversion controlling units analyzes a header of a cell received through the relevant input line and accesses a common conversion table corresponding to routing information included in the header. The common conversion table is disposed in common with the input lines. The common conversion table collates routing information of cells received through the input lines with output routing information and stores the collated data. Each of the conversion controlling units extracts output routing information from the common conversion table corresponding to the routing information of a cell received through the relevant input line, adds output routing information to the header of the cell, and sends the resultant cell to the ATM switch.

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First Claim