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7941 stuck in fallback mode after working remotely through ASA Phone Proxy

I'm using CCM 6 and an ASA with Phone Proxy. I have recently pulled one of my phones that was configured to go through the ASA remotely back into the office and it will only come up in fallback mode. I have reset the phone multiple times. I have confirmed that the phone has an internal IP address in the correct range for my vlan configuration, it no longer has the alt-tftp server listed and correctly lists the CCM server address in the network configuration. Any idea why it's doing this? I'm stumped.


Re: 7941 stuck in fallback mode after working remotely through A

Found the fix in the wiki, the ctl file needed to be erased:

Deleting the CTL file on the phone

1. Press the "Settings" button

2. Choose "Security Configuration" (might be option 4 or 6, depending upon phone model)

3. Unlock the phone with "* * #"

4. Scroll down to "CTL file" and press "Select"

5. Press the "Erase" button (might have to press "more" first)