Troubleshoot Ata 191 Security; General Troubleshooting Tips - Cisco ATA 191 Administration Manual
Analog telephone adapter
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Troubleshoot and Maintenance
Related Topics
Access the IVR and Configure Your ATA Settings, on page 61
Phone Configuration Files
Determine the MAC Address of the ATA, on page 20
Troubleshoot ATA 191 Security
The following table provides troubleshooting information for the security features on the ATA 191. For
information relating to solutions for any of these issues, and for more troubleshooting information about
security, see the Security Guide for Cisco Unified Communications Manager.
Table 9: ATA 191 Security Troubleshooting
Problem
CTL File Problems
Device authentication error.
ATA cannot authenticate the CTL file.
ATA cannot authenticate any of the configuration
files other than CTL file.
ATA does not register with
Cisco Unified Communications Manager.
ATA does not request signed configuration files.
ATA cannot update the CTL file.
General Troubleshooting Tips
The following table provides general troubleshooting information for the ATA 191.
Cisco ATA 191 Analog Telephone Adapter Administration Guide for Cisco Unified Communications Manager
Troubleshoot ATA 191 Security
Possible Cause
CTL file does not have a
Cisco Unified Communications Manager certificate
or has an incorrect certificate.
The security token that signed the updated CTL file
does not exist in the CTL file on the phone.
The configuration file may not be signed by the
corresponding certificate in the phone's Trust List.
The CTL file does not contain the correct information
for the Cisco Unified Communications Manager
server.
The CTL file does not contain any TFTP entries with
certificates.
When the CTL file is updated on
Cisco Unified Communications Manager, a factory
reset of the ATA is required to update the CTL file.
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