Patent ID: 7099335

Claim:
A communication control apparatus for collecting cells belonging to a same connection among a plurality of cells which are inputted, assembling a frame every connection, and outputting each of said frames as frame data, comprising: a frame assembly memory having a plurality of areas which were set so as to correspond to a maximum one of a plurality of frame lengths which are handled; a memory write control unit constructed in a manner such that when a cell of a new connection is inputted, said new connection is allocated to an empty area in said frame assembly memory to which the connection is not allocated yet and said cell is written therein, and on the other hand, when the cell of the same connection as the connection which has already been allocated to any of said areas is inputted, said cell is written into said area to which said connection has already been allocated, and if the cells of one frame have already been written in said area, said connection is allocated to another new area, and said input cell is written therein; and a memory read control unit which reads out said collected cells of one frame from said frame assembly memory and outputs them as completed-frame data.