Avaya IP Office 9.0 installed 4 years ago. 24 extensions. A couple of months ago, started with intermittent clipping and one way audio on about 2% of the calls, incoming and outgoing. 8 channel PRI with fiber to the building, 15K call volume/month. Carrier has replaced all their onsite equipment, I've replaced the POE switch, reseated cards, grounded unit, etc. There doesn't seem to be a pattern. One call is crystal clear, next has issues, Any ideas?
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