Cisco 7931G Administration Guide - Page 215

Chapter 9 Troubleshooting and Maintenance Cisco Unified IP Phone Resets Unexpectedly Verifying that the Phones Have Not Been Intentionally Reset If you are not the only administrator with access to Cisco Unified Communications Manager, you should verify that no one else has intentionally reset the phones. You can check whether a Cisco Unified IP Phone received a command from Cisco Unified Communications Manager to reset by looking at the Network Statistics screen. (For information about displaying this screen, see the "Network Statistics Screen" section on page 7-13.") If the phone was recently reset one of these messages appears: • Reset-Reset-Phone closed due to receiving a Reset/Reset from Cisco Unified Communications Manager Administration. • Reset-Restart-Phone closed due to receiving a Reset/Restart from Cisco Unified Communications Manager Administration. Eliminating DNS or Other Connectivity Errors If the phone continues to reset, follow these steps to eliminate DNS or other connectivity errors: Procedure Step 1 Step 2 Use the Erase softkey to reset phone settings to their default values. See the "Resetting or Restoring the Cisco Unified IP Phone" section on page 9-19 for details. Modify DHCP and IP settings: a. Disable DHCP. See the "Network Configuration Menu" section on page 4-7 for instructions. b. Assign static IP values to the phone. See the "Network Configuration Menu" section on page 4-7 for instructions. Use the same default router setting used for other functioning Cisco Unified IP Phones. c. Assign TFTP server. See the "Network Configuration Menu" section on page 4-7 for instructions. Use the same TFTP server used for other functioning Cisco Unified IP Phones. Cisco Unified IP Phone 7931G Administration Guide for Cisco Unified Communications Manager 6.0 OL-12457-01 9-11