Cisco 7912G Administration Guide - Page 128
Registering the Phone with CiscoCallManager, Checking Network Connectivity, Device > Find
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Resolving Startup Problems Chapter 6 Troubleshooting the Cisco IP Phone These sections can assist you in determining the reason the phone is unable to start up properly: • Registering the Phone with Cisco CallManager, page 6-14 • Checking Network Connectivity, page 6-14 • Verifying TFTP Server Settings, page 6-15 • Verifying IP Addressing and Routing, page 6-15 • Verifying DNS Settings, page 6-16 • Verifying Cisco CallManager Settings, page 6-16 • Cisco CallManager and TFTP Services Are Not Running, page 6-16 • Creating a New Configuration File, page 6-17 Registering the Phone with Cisco CallManager Registration with a Cisco CallManager server can only be successful if the phone has been added to the server or if auto-registration is enabled. Review the information and procedures in the "Adding Phones to the Cisco CallManager Database" section on page 2-12 to ensure that the phone has been added to the Cisco CallManager database. To verify that the phone is in the Cisco CallManager database, use Device > Find from Cisco CallManager to search for the phone based on its MAC Address. Verify the MAC address to search for by pressing Settings > Network Configuration > MAC address on the phone. If the phone is already in the Cisco CallManager database, its configuration file might be damaged. See the "Creating a New Configuration File" section on page 6-17 for assistance. Checking Network Connectivity If the network is down between the phone and the TFTP server or Cisco CallManager, the phone cannot start up properly. Ensure that the network is currently up and running. 6-14 Cisco IP Phone Administration Guide for Cisco CallManager 3.3, Cisco IP Phones 7902G/7905G/7912G OL-6313-01