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Old 12-29-2014, 10:49 AM
zakabog zakabog is offline
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Here's a quote that might be relevant to the issue you're having, it seems that firmware updates on already affected phones will not fix the issue.

Quote:
Affected 1600 Series IP Deskphones downgraded from 1.3.3 or 1.3.4.B to 1.3.2 resulting in the defaulted/duplicated MAC address condition cannot be recovered in the field, and should be returned to Avaya under warranty, ideally within the first 90 days under the DOA process, for a free of charge replacement.
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