8 Troubleshooting the Cisco IP Phone

Resolving Startup ProblemsChapter 8 Troubleshooting the Cisco IP PhoneIn addition, problems with security may prevent the phone from starting upproperly. See the “Troubleshooting Cisco IP Phone Security” section onpage 8-12 for more information.Identifying Error MessagesAs the Cisco IP Phone models 7960G/7940G cycle through the startup process,you can access status messages that might provide you with information about thecause of a problem. See the “Status Messages Screen” section on page 6-3 forinstructions about accessing status messages and for a list of potential errors, theirexplanations, and their solutions.Registering the Phone with Cisco CallManagerChecking Network ConnectivityA Cisco IP Phone can register with a Cisco CallManager server only if the phonehas been added to the server or if auto-registration is enabled. Review theinformation and procedures in the “Adding Phones to the Cisco CallManagerDatabase” section on page 2-10 to ensure that the phone has been added to theCisco CallManager database.To verify that the phone is in the Cisco CallManager database, choose Device >Find from Cisco CallManager Administration to search for the phone based on itsMAC Address. For information about determining a MAC address, see the“Determining the MAC Address of a Cisco IP Phone” section on page 1-22.If the phone is already in the Cisco CallManager database, its configuration filemay be damaged. See the “Creating a New Configuration File” section onpage 8-7 for assistance.If the network is down between the phone and the TFTP server orCisco CallManager, the phone cannot start up properly. Ensure that the networkis currently running.8-4Cisco IP Phone Administration Guide for Cisco CallManager 4.1OL-4825-02