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Cisco Unified IP Phone 8941 and 8945 Administration Guide for Cisco Unified Communications Manager 8.5 (SCCP and SIP)
OL-20851-01
Device Information 8-3
Network Setup 8-4
Network Statistics 8-7
Device Logs 8-9
Streaming Statistics 8-9
CHAPTER
9 Troubleshooting and Maintenance 9-1
Resolving Startup Problems 9-1
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
Symptom: Cisco Unified IP Phone Unable to Obtain IP Address 9-5
Cisco Unified IP Phone Resets Unexpectedly 9-6
Verifying the Physical Connection 9-6
Identifying Intermittent Network Outages 9-6
Verifying DHCP Settings 9-6
Checking Static IP Address Settings 9-7
Verifying the Voice VLAN Configuration 9-7
Verifying that the Phones Have Not Been Intentionally Reset 9-7
Eliminating DNS or Other Connectivity Errors 9-7
Checking Power Connection 9-8
Troubleshooting Cisco Unified IP Phone Security 9-8
General Troubleshooting Tips 9-9
Resetting or Restoring the Cisco Unified IP Phone 9-12
Performing a Basic Reset 9-12
Performing a Factory Reset 9-12
Monitoring the Voice Quality of Calls 9-13
Troubleshooting Tips 9-14
Where to Go for More Troubleshooting Information 9-15
Cleaning the Cisco Unified IP Phone 9-15
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 Subscribe to Services and Configure Phone Features A-2
How Users Access a Voice Messaging System A-2
How Users Configure Personal Directory Entries A-3
Installing and Configuring the Cisco Unified IP Phone Address Book Synchronizer A-3