This is directed at 90% of the official Cisco employee posts. I apologize ahead of time for my next comments…Who are you trying to fool?You are trying to feed us bunch of misinformation and out & out lies.You KNOW the real problem is that this model ...

Ok, thanks. I wish we had that few needing to be sent for RMA.

Do you think that is the firmware upgrade actually fixed some Microphone problems?Pops.1953

I feel your pain. I also work for a hospital system and in the 2 years or so that we have been using the 8821 phones we have RMA-ed  probably over 200. I believe the Microphone maybe an actual hardware failure. One good drop and it's toast. The 7925 ...