| 摘要 |
A novel ATM switch of dual switch plane operation and method of switching traffic 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, traffic cells are tagged either symmetric or asymmetric at an ingress port so that a destination port is able to properly gather correct cells even when switch planes develop faults or quality degradation.
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