Modular base element for the construction of a connection network in a switching node with ATM technique, able to replicate predetermined cells for carrying out multipoint connections. It calls for saving the information contents of the cells in a shared memory BC, and a plurality of memories F1-Fn managed by the first in first out FIFO procedure, controlled by a decoder DEC of the routing information sw/mp, rou. A counter field CNT for each memory cell BC is loaded with the number of copies to be generated and decremented each time the cell is read, enabling the cancellation of the cell only when its contents, for that cell, have been cancelled. (Figure 2) IMAGE
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