ReferenceTopic
Cisco Unified Communications Manager Phone
Addition Methods
Security and phone configuration files
Disable and Enable Web Page AccessDisabling access to phone web pages
• Troubleshooting and Maintenance
• Troubleshooting Guide for Cisco Unified
Communications Manager
Troubleshooting
Cisco Unified IP Phone Reset or RestoreDeleting the CTL file from the phone
Cisco Unified IP Phone Reset or RestoreResetting or restoring the phone
• 802.1X Authentication, on page 22
• Troubleshooting and Maintenance
802.1X Authentication for Cisco Unified IP Phones
Supported Security Features
The following table provides an overview of the security features that the Cisco Unified IP Phone 6901 and
6911 support. For more information about these features and about Cisco Unified Communications Manager
and Cisco Unified IP Phone security, see the Cisco Unified Communications Manager Security Guide.
Most security features are available only if the phone contains a certificate trust list (CTL). For more information
about the CTL, see the “Configuring the Cisco CTL Client” chapter in Cisco Unif ied Communications Manager
Security Guide.
Note
Table 3: Overview of Security Features
DescriptionFeature
Signed binary files (with the extension .zz.sgn)
prevent tampering with the firmware image before it
is loaded on a phone. Tampering with the image
causes a phone to fail the authentication process and
reject the new image.
Image authentication
Each Cisco Unified IP Phone requires a unique
certificate for device authentication. Phones include
a manufacturing installed certificate (MIC), but for
additional security, you can specify in Cisco
Unified Communications Manager Administration
that a certificate be installed by using the Certificate
Authority Proxy Function (CAPF).
Customer-site certificate installation
Cisco Unified IP Phone
17
Cisco Unified IP Phone
Supported Security Features
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