Contents
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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
A P P E N D I X
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
A P P E N D I X
B
Supporting International Users
B-1
Installing the Cisco Unified Communications Manager Locale Installer
B-1