Cisco 8821 Administration Manual page 8

Contents
Cisco Wireless IP Phone 8821 and 8821-EX Administration Guide for Cisco Unified Communications Manager
viii
Phone Cannot Connect to TFTP Server or to Cisco Unified Communications Manager
116
Phone Cannot Connect to TFTP Server
Phone Cannot Connect to Server
Phone Cannot Connect with DNS
Cisco Unified Communications Manager and TFTP Services Are Not Running
Phone is Not Configured in Cisco Unified Communications Manager
Configuration File Corruption
Phone Reset Problems
118
Phone Resets Due to Access Point Setup
Phone Resets Due to Intermittent Network Outages
Phone Resets Due to DHCP Setting Errors
Phone Resets Due to Incorrect Static IP Address
Phone Resets During Heavy Network Usage
Phone Resets Due to Intentional Reset
Phone Resets Due to DNS or Other Connectivity Issues
Audio Problems 120
One-Way Audio or No Speech Path
Ring Volume is Too Low
Phone Does Not Ring 122
Feature Issues
122
Users Report Problems with Call Park
Roaming and Voice Quality or Lost Connection Problems
Voice Quality Deteriorates While Roaming
Voice Conversation Delays While Roaming
Phone Loses Cisco Unified Communications Manager Connection While Roaming
Phone Does not Roam Back to Preferred Band
Troubleshooting Procedures
Check TFTP Settings
125
Determine DNS or Connectivity Issues
Check DHCP Settings
126
Create New Phone Configuration File
Start Service
127
Capture Phone Logs 127
Make a Screen Capture
128
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