Checking Power Connection; Troubleshooting Cisco Unified Ip Phone Security - Cisco 7941G - Unified IP Phone VoIP Administration Manual

Troubleshooting Cisco Unified IP Phone Security

Checking Power Connection

Troubleshooting Cisco Unified IP Phone Security
Table 9-1 Cisco Unified 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
Unified Communications Manager.
Phone does not request signed
configuration files.
Cisco Unified IP Phone 7961G/7961G-GE and 7941G/7941G-GE for Cisco Unified Communications Manager 6.1
9-12
In most cases, a phone will restart if it powers up by using external power but loses
that connection and switches to PoE. Similarly, a phone may restart if it powers
up by using PoE and then gets connected to an external power supply.
Table 9-1 provides troubleshooting information for the security features on the
Cisco Unified IP Phone. For information relating to the solutions for any of these
issues, and for additional troubleshooting information about security and
encryption, refer to Cisco Unified Communications Manager Security Guide.
Possible Cause
CTL file does not have a Cisco Unified Communications
Manager certificate or has an incorrect certificate.
exist in the CTL file on the phone.
There is a 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 Unified Communications Manager server.
The CTL file does not contain any TFTP entries with
certificates.
Chapter 9 Troubleshooting and Maintenance
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