In the present invention, a counter value at a time when a cell arrives at each node of an asynchronous transfer mode communication network having a constant transmission delay is read, and information related to jitter is calculated by itself. Thus, jitter In the jitter information transmission by the counter interworking in the asynchronous transmission mode communication network in which the bandwidth is arbitrarily set within a range shorter than the time period corresponding to the bandwidth in each node in the high speed communication network, relates to how efficient use of bandwidth, the connection unit separate by as a counter (C i, j) installed as a connection-specific (per-session) of each node can perform this counter (C i, j) is counted in slots in the constant transmission delay that the frames are defined the asynchronous transfer mode network, the counter (C i, j) is No. qualifying time for the k-th cell of the connection j at the node i as interworking And arrival time Between , The moment the cell arrives ( RTI ID = 0.0 ) To output the value of the counter to the elapsed time ( ) Is calculated by itself to adjust the jitter of the cell.
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