Has anybody encountered an issue where your 88XX (specifically 8851) phones have randomly exhibited off-hook/on-hook tendencies? Over the past year we have had upwards of 250+ phones randomly go off-hook then on-hook in less than a second, sometimes causing active calls to be dropped. Different hardware and firmware versions but the symptoms are always the same. TAC hasn't found anything yet, so I'm just trying to gauge if this is an issue others are having. Thanks.
Not with 88XX. Below are the same behavior with 7900 phones
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Has there been any update to this issue? We are having the same issue with a couple of phones on our network, one actually on the network and the second one registered back thru the expressway.
We had Cisco AS out to one of our sites to observe the issue. They saw it first hand and recorded the issue to confirm it is happening. They sent the offending phones in for hardware analysis. Their conclusion was that there was corrosion on the hook switch. Whether or not that was the cause of the issue for the dozens of phones we had/have with this problem I cannot say, but the one that they analyzed had corrosion on it.