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

Last Modified

Feb 03, 2017

Products (1)

  • Cisco 2900 Series Integrated Services Routers

Known Affected Releases

15.2(4)M3.11

Description (partial)

Symptom:
ISDN fails and the NT1 remains on even without cable.

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