BAND CONTROL SYSTEM FOR ATM NETWORK

PURPOSE:To control the increase of momentary traffic to reduce abandonment of cells by reading out cells in a storage means with periods of proportions corresponding to declared bands to smooth and output burst cells. CONSTITUTION:Input cells from a communication line are separated in accordance with set VCI numbers by a separating means 1 and are stored in cell storage means 2. Data corresponding to band declaration values declared for respective VCI numbers are preliminarily set to a control means 5, and cells are read out from cell storage means 2 at each timing and are multiplexed by a cell multiplexing means 4 and are outputted to the communication line. Since cells are read out with periods of proportions corresponding to declared bands in this manner, cells are outputted at speeds in declared bands and burst cells are smoothed and outputted. Consequently, the increase of momentary traffic is controlled to reduce abandonment of cells. Further, a maximum cell storage value setting means 3 is added to adjust the abandonment volume of cells.