Patent ID: 6134219
Filing Date: 2000-10-17
Classification: H04L,H04Q

Abstract:
An asynchronous transfer mode (ATM) switching system comprising:a generating section generating test cells at a generation rate, and stopping the generation of the test cells in response to a generation stopping instruction;an input buffer section receiving and storing normal cells and the test cells, outputting the stored normal cells and the stored test cells, and issuing a first congestion notice of accordance with a storage state of said input buffer section;an ATM switch outputting, to an output port, the normal cells outputted from said input buffer section;an output buffer section receiving and storing the normal cells and the test cells, selecting the test cells from among the stored cells, and issuing a second congestion notice in accordance with a storage state of said output buffer section;a test section testing the test cells selected by said output buffer section to determine cell conductivity; anda control section issuing the generation stopping instruction in response to receiving one or more of said first congestion notice and said second congestion notice.