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Cisco Unified IP Phone 7962G and 7942G Administration Guide for Cisco Unified Communications Manager 6.1(3)
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Chapter 3      Setting Up the Cisco Unified IP Phone
    Configuring Security on the Cisco Unified IP Phone
Step 4 Scroll to LSC and press the Update softkey.
The phone prompts for an authentication string.
Step 5 Enter the authentication code and press the Submit softkey.
The phone begins to install, update, or remove the LSC, depending on how the CAPF was configured. 
During the procedure, a series of messages appears in the LSC option field in the Security Configuration 
menu, so you can monitor progress. When the procedure completes successfully, the phone will display 
Installed or Not Installed.
The LSC install, update, or removal process can take a long time to complete. You can stop the process 
at any time by pressing the Stop softkey from the Security Configuration menu. (Settings must be 
unlocked before you can press this softkey.)
When the phone successfully completes the installation procedure, it displays “Success.” If the phone 
displays, “Failure,” the authorization string may be incorrect or the phone may not enabled for 
upgrading. Refer to error messages generated on the CAPF server and take appropriate actions.
You can verify that an LSC is installed on the phone by choosing Settings >  Model Information and 
ensuring that the LSC setting shows Yes.
Related Topic
  • Understanding Security Features for Cisco Unified IP Phones, page 1-8