Aastra Phones - Display says "Done"

Hello. I downloaded AsteriskNOW with FreePBX last night and am slowly getting things going. I am having a very difficult time getting Aastra 9133i to register to the system. After resetting the phones to factory defaults and then configuring the SIP settings via the device itself I keep getting the phones locked up where the display only says “Done”. Each phone reverts to that no matter how many times I recycle the power, and I cannot get back into the settings menu on the phone.

Anyone have seen this before? What do you suggest?

Know that I have a lot of IP telephony experience, but very little Linux experience.