| 摘要 |
<p>PURPOSE:To accurately evaluate the performance of a cell switch by counting number of undelivered test cells and dissident bit number from number of prediction bit patterns between predicted bit pattern and other prediction bit pattern coincident in a preceding time when the bit pattern of an information part and the prediction bit pattern are coincident. CONSTITUTION:A cell input means 53 counts number of inputted test cells, and a test cell whose header part error and mis-distribution are not detected is outputted to cell reception means 551-55j corresponding to a cell generating means generating the test cell. The cell reception means 551-55j counts number of undelivered test cell addressed to itself from the number of prediction bit patterns between the prediction bit pattern coincident at present and the prediction bit pattern coincident in the preceding time and counts of dissident bit number in the information part.</p> |
