Contents
ix
Cisco Unified IP Phone 7962G and 7942G Administration Guide for Cisco Unified Communications Manager 7.0
OL-15483-01
Network Statistics
8-9
Device Logs
8-11
Streaming Statistics
8-11
C H A P T E R
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
Identifying Error Messages
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
9-5
Symptom: Cisco Unified IP Phone Unable to Obtain IP Address
9-6
Cisco Unified IP Phone Resets Unexpectedly
9-6
Verifying the Physical Connection
9-6
Identifying Intermittent Network Outages
9-6
Verifying DHCP Settings
9-7
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
General Troubleshooting Tips for the Cisco Unified IP Phone Expansion Module
9-12
Resetting or Restoring the Cisco Unified IP Phone
9-13
Performing a Basic Reset
9-13
Performing a Factory Reset
9-14
Using the Quality Report Tool
9-14
Monitoring the Voice Quality of Calls
9-15
Using Voice Quality Metrics
9-15
Troubleshooting Tips
9-16