Phone Cannot Authenticate CTL File
Problem
Phone cannot authenticate the CTL file.
Cause
The security token that signed the updated CTL file does not exist in the CTL file on the phone.
Solution
Change the security token in the CTL file and install the new file on the phone.
CTL File Authenticates but Other Configuration Files Do Not Authenticate
Problem
Phone cannot authenticate any configuration files other than the CTL file.
Cause
A bad TFTP record exists, or the configuration file may not be signed by the corresponding certificate in the
phone Trust List.
Solution
Check the TFTP record and the certificate in the Trust List.
ITL File Authenticates but Other Configuration Files Do Not Authenticate
Problem
Phone cannot authenticate any configuration files other than the ITL file.
Cause
The configuration file may not be signed by the corresponding certificate in the phone Trust List.
Solution
Re-sign the configuration file by using the correct certificate.
TFTP Authorization Fails
Problem
Phone reports TFTP authorization failure.
Cause
The TFTP address for the phone does not exist in the CTL file.
Cisco IP Conference Phone 8832 Administration Guide for Cisco Unified Communications Manager
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Cisco IP Conference Phone Troubleshooting
Phone Cannot Authenticate CTL File
