Specifications
Table Of Contents
- Cisco Unified Wireless IP Phone 7921G Administration Guide for Cisco Unified CallManager Release 4.1, 4.2, 5.0 and Later
- Contents
- Preface
- An Overview of the Cisco Unified Wireless IP Phone 7921G
- An Overview of the Voice Over IP Wireless Network
- Understanding the Wireless LAN
- Components of the VoIP Wireless Network
- Voice Over IP Wireless Network Configuration
- Site Survey Verification
- Setting Up the Cisco Unified Wireless IP Phone 7921G
- Before You Begin
- Installing the Cisco Unified Wireless IP Phone 7921G
- Powering On the Cisco Unified Wireless IP Phone 7921G
- Understanding the Phone Startup Process
- Using the Cisco Unified Wireless IP Phone 7921G Web Pages
- Using the USB Connection for Initial Phone Configuration
- Updating Phones Remotely
- Configuring Network Profiles
- Configuring USB Settings
- Configuring Trace Settings
- Using System Settings
- Configuring Settings on the Cisco Unified Wireless IP Phone 7921G
- Accessing Network and Phone Settings
- Configuring Network Profile Settings
- Changing Phone Settings
- Configuring the Security Certificate on the Phone
- Changing the USB Configuration
- Configuring Features, Templates, Services, and Users
- Configuring Cisco Unified Wireless IP Phones in Cisco Unified CallManager
- Telephony Features Available for the Phone
- Specific Configuration Options for the Cisco Unified Wireless IP Phone 7921G
- Configuring Softkey Templates
- Modifying Phone Button Templates
- Setting Up Services
- Configuring Corporate and Personal Directories
- Adding Users to Cisco Unified CallManager
- Managing the User Options Web Pages
- Creating Custom Phone Rings
- Viewing Security, Device, Model, and Status Information on the Phone
- Monitoring the Cisco Unified Wireless IP Phone Remotely
- Troubleshooting the Cisco Unified Wireless IP Phone 7921G
- Resolving Startup and Connectivity Problems
- Resolving Voice Quality and Roaming Problems
- General Troubleshooting Information
- Erasing the Local Configuration
- Providing Information to Users By Using a Website
- Supporting International Users
- Physical and Operating Environment Specifications
- Checklist for Deploying the Cisco Unified Wireless IP Phone 7921G
- Index
Contents
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Cisco Unified Wireless IP Phone 7921G Administration Guide for Cisco Unified CallManager Release 4.1, 4.2, 5.0
OL-10802-02
CHAPTER
9 Troubleshooting the Cisco Unified Wireless IP Phone 7921G 9-1
Resolving Startup and Connectivity Problems 9-1
Symptom: The unified IP phone Does Not Complete the Normal Start Up
Process 9-2
Symptom: The Wireless IP Phone Does Not Associate with a Cisco Aironet
Access Point 9-3
Verifying Access Point Settings 9-3
Symptom: The unified IP phone Does Not Register with Cisco
Unified CallManager 9-5
Registering the Phone with Cisco Unified CallManager 9-5
Checking Network Connectivity 9-6
Verifying TFTP Server Settings 9-6
Verifying IP Addressing 9-7
Verifying DNS Settings 9-8
Verifying Cisco Unified CallManager Settings 9-8
Cisco Unified CallManager and TFTP Services Are Not Running 9-9
Creating a New Configuration File 9-10
Resolving Voice Quality and Roaming Problems 9-11
Symptom: unified IP phone Resets Unexpectedly 9-11
Verifying Access Point Settings 9-11
Identifying Intermittent Network Outages 9-12
Verifying DHCP Settings 9-12
Verifying Voice VLAN Configuration 9-12
Verifying that the Phones Have Not Been Intentionally Reset 9-13
Eliminating DNS or Other Connectivity Errors 9-13
Symptom: The unified IP phone Has Audio Problems 9-14
No Audio During a Connected Call 9-14
One-Way Audio During a Connected Call 9-14
Symptom: The unified IP phone Does Not Roam Properly 9-15
Voice Quality Deteriorates While Roaming 9-16