| 摘要 |
A novel ATM switch of dual switch plane operation and method of switching tr affic in unit cells among ports in dual switch planes are disclosed. The ATM switch of the invention is plane protected in that a redundant switch plane is provided. In the switch, traff ic cells are tagged either symmetric or asymmetric at an ingress port so that a desti nation port is able to properly gather correct cells eve n when switch planes develop faults or quality degradation.
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