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
Chapter 9 Troubleshooting the Cisco Unified Wireless IP Phone 7921G
General Troubleshooting Information
9-20
Cisco Unified Wireless IP Phone 7921G Administration Guide for Cisco Unified CallManager Release 4.1, 4.2, 5.0
OL-10802-02
General Troubleshooting Information
The following topics provide general information and tips for troubleshooting the
Cisco
Unified Wireless IP Phone 7921G.
• Common Phone Status Messages, page 9-20
• Troubleshooting Tips for the Cisco Unified Wireless IP Phone 7921G,
page 9-22
• Logging Information for Troubleshooting, page 9-24
Common Phone Status Messages
Table 9-2 provides a list of common status messages that display on the phone
screen. The table provides possible causes and recommended actions to assist
with troubleshooting the problem.
Ta b l e 9-2 Common Phone Status Messages
Message Description Possible Explanation and Action
Network Busy The phone is unable to complete
a call.
The WLAN is not able to allocate
bandwidth for the phone to complete
the call.
Wait a few minutes and try the call
again. If the problem persists, the
WLAN might be congested. Consider
increasing the WLAN bandwidth.
Leaving Service Area The phone is unable to place or
receive calls. The no signal icon
displays on the phone screen.
• The phone cannot detect any
access point (AP) beacons.
The phone is out of range of all
APs. Move to a location that is
within the coverage area.
• The AP has failed. Run diagnostic
tests on the AP and replace if
defective.