The NVISION 8500 Hybrid router offers patented N-on-1 crosspoint redundancy to provide a zero downtime capability, with a back-up system for the largest possible impact block in the router. A redundant crosspoint array continuously shadows the main array and, in the event of a failure, a single action repairs the situation by "gang switching" all outputs to the good, redundant crosspoint card during the next vertical interval. Router maintenance can then be performed without impacting the facility's operations. This maintenance process is outlined below:
1: Normal operationsDuring normal operations, a redundant crosspoint array continuously shadows the main crosspoint array.
2: Crosspoint array failureA single crosspoint faiIure develops in the main crosspoint array.
4: Returning to normal operationsRouter maintenance can then be performed to repair the faulty array, without impacting the facility's operations.
