Switching system for switching a fixed-length cell

The invention relates to a switching system for switching a fixed-length cell composed of a header section and an information section between a plurality of incoming highways and a plurality of outgoing highways based on information included in the header section of said cell. This system comprises a first storage means for storing cells received from said plurality of incoming highways which cells are switched to a destination outgoing highway of said plurality of outgoing highways, wherein a second storage means for storing information corresponding to an idle address of said first storage means is included and a control circuit for controlling the write and read operations of said first storage means corresponding to the information stored in said second storage means is comprised. This control circuit is connected to said first storage means and said second storage means, so that the information corresponding to the idle address of said first storage means is stored in said second storage means based on a read address of the first storage means from said control circuit and the information from said second storage means is outputted as a write address of said first storage means, and is provided with a third storage means for storing the information from said second storage means as a next address for writing a next cell in said first storage means. The control circuit inputs said next address to an address corresponding to said write address of said third storage means at time of writing a cell into said first storage means and outputs a read address of said first storage means based on said next address outputted from said third storage means at time of reading a cell from said first storage means.