Apparatus for controlling cell transmission timing

摘要

It is an object of the present invention to reduce a storage area for storing time information necessary to manage transmission timing of a plurality of cells in an asynchronous transfer mode type exchange. For this purpose, the shaper for use in the ATM exchange according to this invention employs a plurality of cell transmission queues each having a different class. If there occurs a cell in a connection having a cell transmission rate R, one of the cell transmission queues is specified on the basis of the cell transmission rate R, wherein the cell is registered in one of a plurality of steps in the specified cell transmission queue in accordance with the quotient given using the cell transmission rate R.