Configuring Security Features 
197 
4.  Select the desired value from the pull-down list of CA Certificates. 
 
5.  Click Confirm to accept the change. 
A dialog box pops up to prompt that the settings will take effect after reboot. 
6.  Click OK to reboot the IP phone. 
To upload a trusted certificate via web user interface: 
1.  Click on Security->Trusted Certificates.