ATM switching system connectable to I/O links having different transmission rates

摘要: An ATM switching system comprises a switch unit including plurality of input ports and output having the same cell transmission rate, multiplexer for multiplexing trains outputted from at least two into single train outputting to high-speed line (and/or demultiplexer demultiplexing an port low-speed lines). The includes buffer memory temporarily storing cells inputted while forming queue chain each which is be outputted, distributing read among in circulation, control circuit controlling write operation with shared memory. has table device identifier are designated by device.