Module comprising in an atm exchange connection ports, each transmitting a cell indicative of a destination module in a cell header

Abstract From the Canadian patent

In a local module (11(1)) of an asynchronous time division exchange or switching system, each of connection ports (17) transfers a transmission signal to a module bus (19) as a cell with its header made to indicate a destination module number and a destination port number as a VCI when the signal is directed to a destination module (ll(N)) and one of the connection ports respectively. Preferably, a connection control unit (15) of the local module transfers and does not transfer the cell to a highway bus (13) when the signal is directed to the destination module and the last-mentioned one of the connection ports. More preferably, the header additionally indicates a binary one and zero bit …