Chapter9 Troubleshooting and Maintenance
Resolving Startup Problems
9-4
Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 5.1 (SIP), Cisco Unified IP Phones
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•Verifying IP Addressing and Routing, page9-5
•Verifying DNS Settings, page9-6
•Verifying Cisco UnifiedCallManager Settings, page 9-6
•Cisco Unified CallManager and TFTP Services Are Not Running, page9-6
•Creating a New Configuration File, page 9-7
•Registering the Phone with Cisco Unified CallManager, page 9-8
In addition, problems with security may prevent the phone from starting up
properly. See the “Troubleshooting Cisco Unified IP Phone Security” section on
page 9-12for more information.
Identifying Error Messages
As the phone cycles through the startup process, you can access status messages
that might provide you with information about the cause of a problem. See the
“Status Messages Screen” section on page 7-4 for instructions about accessing
status messages and for a list of potential errors, their explanations, and their
solutions.
Checking Network Connectivity
If the network is down between the phone and the TFTP server or
Cisco UnifiedCallManager, the phone cannot start up properly. Ensure that the
network is currently running.
Verifying TFTP Server Settings
You can determine the IP address of the TFTP server used by the phone by
pressing the Settings button on the phone, choosing Network Configuration,
and scrolling to the TFTP Server 1 option.
If you have assigned a static IP address to the phone, you must manually enter a
setting for the TFTP Server 1 option. See the “Network Configuration Menu”
section on page 4-7.