I am working on a ip 400 with voicemail pro. I have an extension #1504 that is a 5410 phone. The display keeps telling me to please wait. I know the phone works because it will registar anywhere else i plug it in. But if i plug it back in at its original location, it wont work. This started to happen about a week ago. Not sure if maybe some of these ports go bad on the IP office, but that is what it seems like. Anyone have any ideas?