We have an SX200 MX Controller running several cabinets, and a PRI card. The end user has had several problems in the past with PRI cards, and would prefer to use an NSU instead.
The problem is that once we get more than 30-35 simultaneous calls up through the NSU, all callers start to hear crackling and interference. We've tried choosing trunks 1 thru 46, and also 46 thru 1, but still have the same results. Using the same CIM connections, the PRI card works fine 100% of the time.Any suggestions?


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