Cisco 8811 Administration Manual page 12

Contents
C H A P T E R 1 3
C H A P T E R 1 4
Cisco IP Phone 8800 Series Administration Guide for Cisco Unified Communications Manager
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TFTP Authorization Fails
Phone Does Not Register
Signed Configuration Files Are Not Requested
Video Call Problems
No Video Between Two Cisco IP Video Phones
Video Stutters or Drops Frames
Cannot Transfer a Video Call
No Video During a Conference call
General Telephone Call Problems
Phone Call Cannot Be Established
Phone Does Not Recognize DTMF Digits or Digits Are Delayed
Troubleshooting Procedures
Check TFTP Settings
Determine DNS or Connectivity Issues
Check DHCP Settings
Create a New Phone Configuration File
Identify 802.1X Authentication Problems
Verify DNS Settings
Start Service
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Control Debug Information from Cisco Unified Communications Manager
Additional Troubleshooting Information
Maintenance
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Basic Reset
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Reset the Phone to the Factory Settings from the Phone Keypad
Perform Reset All Settings from Phone Menu
Perform Network Configuration Reset
Perform User Network Configuration Reset
Remove CTL File
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Quality Report Tool
Voice Quality Monitoring
Voice Quality Troubleshooting Tips
Cisco IP Phone Cleaning
International User Support
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