I have a polycom 8800 trio and it has been working fine, until now. When you call the 8800 it rings once, then a busy signal. You are able to call out using the polycom 8800, just not calls coming in. I've tested it with internal and external calls, also we have 4 other polycoms and they work fine.
It is not in DND mode.
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I moved your post from a completely unrelated analog product to the VoIP section.
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