I have been using this firmware for days and its much better than the original. However, Tim I did try hooking up the second ATA you sent me and it upgraded so I left it connected and about 36 hours later it had that audio issue (sounds like the volume jumped 300% when calls connected). I am convinced that one is just broke. I will gladly ship it back and you can return it to GS for a return. Let me know.Ticket ID: GHZ-527230

The original ATA works perfect now. I am very happy with it. Is the call waiting issue resolved that we you told me about? I have not tested it since the first night.

Thanks again.