Checking Power Connection (Sip Phones Only); Troubleshooting Cisco Unified Ip Phone Security - Cisco 7906G - Unified IP Phone VoIP Administration Manual

Troubleshooting Cisco Unified IP Phone Security

Step 5
Step 6

Checking Power Connection (SIP Phones Only)

Troubleshooting Cisco Unified IP Phone Security
Cisco Unified IP Phone 7906G and 7911G for Cisco Unified Communications Manager 6.1
9-12
From Cisco Unified Communications Manager, choose Device > Phone and
verify that you have assigned the correct MAC address to this Cisco Unified IP
Phone. For information about determining a MAC address, see the
the MAC Address of a Cisco Unified IP Phone" section on page
Power cycle the phone.
In most cases, a phone will restart if it powers up using external power but loses
that connection and switches to PoE. Similarly, a phone may restart if it powers
up 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, refer to
Cisco Unified Communications Manager Security Guide.
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
Phone cannot authenticate any of
the configuration files other than the
CTL file.
Chapter 9 Troubleshooting and Maintenance
Possible Cause
CTL file does not have a
Cisco Unified Communications Manager
certificate or has an incorrect certificate.
CTL file does not exist in the CTL file on
the phone.
Invalid TFTP record.
"Determining
2-17.
OL-14585-01