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
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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
Resolving Startup and Connectivity Problems
AP Error—Cannot support all requested capabilities
On the access point, check that CKIP/CMIC is not enabled for the voice VLAN
SSID. The Cisco
Unified Wireless IP Phone 7921G does not support these
features.
Symptom: The unified IP phone Does Not Register with Cisco
Unified
CallManager
If a phone proceeds past the first stage (authenticating with access point), and,
continues to cycle through the messages displaying on the phone screen, the
phone is not starting up properly. The phone cannot successfully start up until it
connects to the LAN and registers with a Cisco
Unified CallManager server.
These sections can assist you in determining the reason that the phone is unable
to start up properly:
• Registering the Phone with Cisco Unified CallManager, page 9-5
• Checking Network Connectivity, page 9-6
• Verifying TFTP Server Settings, page 9-6
• Verifying IP Addressing, page 9-7
• Verifying DNS Settings, page 9-8
• Verifying Cisco Unified CallManager Settings, page 9-8
• Cisco Unified CallManager and TFTP Services Are Not Running, page 9-9
• Creating a New Configuration File, page 9-10
Registering the Phone with Cisco Unified CallManager
A Cisco Unified Wireless IP Phone 7921G can register with a
Cisco
Unified CallManager server only if the phone has been added to the server
or if auto-registration is enabled. If you see the error message, “Registration
Rejected,” review the information and procedures in the
“Adding Users to Cisco
Unified CallManager” section on page 6-22 to ensure that the phone has been
added to the Cisco Unified CallManager database.