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Cisco Bug: CSCuq36549 - NT1 light in HWIC-1B-U remains on even without a cable plugged.

Last Modified

Sep 14, 2019

Products (1)

  • Cisco 2900 Series Integrated Services Routers

Known Affected Releases


Description (partial)

ISDN fails and the NT1 remains on even without cable.

The issue happens when the primary link goes down and the BRI starts working.
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