Electronic circuit with processing units coupled via a communications network

In an electronic circuit, data is transmitted between data-processing circuits across a network (12). A bidirectional network interface is prepared for both transmission of the outgoing message between the pairs of the processor through a network, and reception of an incoming message. A network interface uses an outgoing message, in order to transmit both of information showing each quantity R of the buffer space which is not reported for receiving the data item from an incoming message into data and the buffer store circuit (10) to a processing circuit (10). A network interface is the data item whose use was enabled for transmission of one set (10) of a specific data-processing circuit within a message, Transmission of the outgoing message from one set (10) of a specific data-processing circuit is postponed until the number A of the data item which buffer space can use now across a network (12) for the data item exceeds a threshold value. However, the increase in the quantity R of the buffer space which is not reported in the buffer store circuit (27) to one set (10) of a specific processing circuit is answered, and it is transmitted, before this threshold value is lowered or an outgoing message exceeds a threshold value.