Specifications

Contents
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Cisco Unified IP Phone 7906G and 7911G for Cisco Unified Communications Manager 8.0
OL-21033-01
Symptom: The Cisco Unified IP Phone Does Not Go Through its Normal Startup Process 9-2
Symptom: The Cisco Unified IP Phone Does Not Register with Cisco Unified Communications
Manager
9-2
Identifying Error Messages 9-3
Registering the Phone with Cisco Unified Communications Manager 9-3
Checking Network Connectivity 9-3
Verifying TFTP Server Settings 9-3
Verifying IP Addressing and Routing 9-3
Verifying DNS Settings 9-4
Verifying Cisco Unified Communications Manager Settings 9-4
Cisco CallManager and TFTP Services Are Not Running 9-4
Creating a New Configuration File 9-5
Registering the Phone with Cisco Unified Communications Manager 9-6
Cisco Unified IP Phone Resets Unexpectedly 9-6
Verifying Physical Connection 9-6
Identifying Intermittent Network Outages 9-6
Verifying DHCP Settings 9-7
Checking Static IP Address Settings 9-7
Verifying Voice VLAN Configuration 9-7
Verifying that the Phones Have Not Been Intentionally Reset 9-7
Eliminating DNS or Other Connectivity Errors 9-8
Checking Power Connection on SIP Phones 9-8
Troubleshooting Cisco Unified IP Phone Security 9-8
General Troubleshooting Tips 9-10
Resetting or Restoring the Cisco Unified IP Phone 9-12
Performing a Basic Reset 9-12
Performing a Factory Reset 9-13
Using the Quality Report Tool 9-14
Monitoring the Voice Quality of Calls 9-14
Using Voice Quality Metrics 9-15
Troubleshooting Tips 9-15
Where to Go for More Troubleshooting Information 9-16
Cleaning the Cisco Unified IP Phone 9-16
APPENDIX A Providing Information to Users A-1
How Users Obtain Support for the Cisco Unified IP Phone A-1
Giving Users Access to the User Options Web Pages A-1
How Users Get Copies of Cisco Unified IP Phone Manuals A-2