ATM-Vermittlungsstelle mit Eingangs- und Ausgangsanschlussstellen

摘要

When a multi-cast cell to be sent to a plurality of output ports is inputted, an address pointer designating the address of storage of the multi-cast cell in the shared buffer is re-cued by copying the cell, for instance from a multi-cast cell address buffer, to address buffers for pertinent output ports. The address pointer of this multi-cast cell is preliminarily stored at a time in small capacity buffers for these output ports and then successively transferred to the address buffers during writing of the multi-cast cell. Since cast cells and multi-cast cells are each given a next address pointer designating an address to be next accessed. A single cast cell and a multi-cast cell are chained via an address cell, which indicates that the succeeding cell is a multi-cast cell. The multi-cast cells in the shared buffer are outputted in a logically re-cued form to their pertinent output ports.