Troubleshooting Cisco Ip Phone Security - Cisco 7961G Administration Manual

Troubleshooting Cisco IP Phone Security

Troubleshooting Cisco IP Phone Security
Table 9-1 Cisco IP Phone Security Troubleshooting
Problem
Device authentication error.
Phone cannot authenticate CTL file. The security token that signed the updated CTL file does not
Phone cannot authenticate any of the
configuration files other than the
CTL file.
Phone reports TFTP authorization
failure.
Phone does not register with
Cisco CallManager.
Phone does not request signed
configuration files.
Cisco IP Phone Administration Guide for Cisco CallManager, Cisco IP Phone 7961G/7961G-GE and 7941G/7941G-GE
9-12
Table 9-1 provides troubleshooting information for the security features on the
Cisco IP Phone. For information relating to the solutions for any of these issues,
and for additional troubleshooting information about security and encryption,
refer to the Cisco CallManager Security Guide.
Possible Cause
CTL file does not have a Cisco CallManager certificate or has an
incorrect certificate.
exist in the CTL file on the phone.
Bad TFTP record.
The TFTP address for the phone does not exist in the CTL
•
file.
If you created a new CTL file with a new TFTP record, the
•
existing CTL file on the phone may not contain a record for
the new TFTP server.
The CTL file does not contain the correct information for the
Cisco CallManager server.
The CTL file does not contain any TFTP entries with
certificates.
Chapter 9 Troubleshooting and Maintenance
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