Cisco 6901

Contents
vi
Cisco Unified IP Phone 6901 and 6911 Administration Guide for Cisco Unified Communications Manager 8.6 (SCCP and SIP)
OL-24582-01
Symptom: The Cisco Unified IP Phone Does Not Register with Cisco Unified Communications
Manager
7-2
Identifying Error Messages 7-3
Checking Network Connectivity 7-3
Verifying TFTP Server Settings 7-3
Verifying IP Addressing and Routing 7-3
Cisco CallManager and TFTP Services Are Not Running 7-3
Creating a New Configuration File 7-4
Registering the Phone with Cisco Unified Communications Manager 7-5
Symptom: Cisco Unified IP Phone Unable to Obtain IP Address 7-5
Symptom: The Cisco Unified IP Phone Displays Flashing Red Light 7-5
Cisco Unified IP Phone Resets Unexpectedly 7-6
Verifying the Physical Connection 7-6
Identifying Intermittent Network Outages 7-6
Verifying DHCP Settings 7-6
Checking Static IP Address Settings 7-7
Verifying the Voice VLAN Configuration 7-7
Verifying that the Phones Have Not Been Intentionally Reset 7-7
Eliminating DNS or Other Connectivity Errors 7-7
Checking Power Connection 7-8
General Troubleshooting Tips 7-8
Resetting or Restoring the Cisco Unified IP Phone 7-10
Performing a Basic Reset 7-10
Performing a Factory Reset 7-10
Monitoring the Voice Quality of Calls 7-11
Using Voice Quality Metrics 7-11
Troubleshooting Tips 7-12
Where to Go for More Troubleshooting Information 7-13
Cleaning the Cisco Unified IP Phone 7-13
APPENDIX A Providing Information to Users Via a Website 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 Configure Phone Features A-2
How Users Access a Voice Messaging System A-2
APPENDIX B Supporting International Users B-1
Installing the Cisco Unified Communications Manager Locale Installer B-1