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
Resolving Startup and Connectivity Problems
9-4
Cisco Unified Wireless IP Phone 7921G Administration Guide for Cisco Unified CallManager Release 4.1, 4.2, 5.0
OL-10802-02
Note If the message, “No Service - IP Config Failed,” DHCP failed because the
encryption between the access point and phone do not match.
If using static WEP, check the WEP key on the phone to be sure it matches the
WEP key on the access point. Reenter the WEP key on the phone to be sure it is
correct.
Note If open authentication is set, the phone is able to associate to an access
point although the WEP keys are incorrect or mismatched.
Error Messages During Authentication
If you see the following error messages, check these problems:
Authentication failed, No AP found
• Check if the correct authentication method and related encryption settings are
enabled on the access point.
• Check that the correct SSID is entered on the phone.
• Check that the correct username and password are configured when using
LEAP, EAP-FAST or Auto (AKM) authentication.
• If you are using A WPA Preshared key or WPA2 Preshared Key, check that
you have the correct passphrase configured.
• You might need to enter the user name on the phone in the domain\username
format when authenticating with a Windows domain.
EAP authentication failed
• If you are using EAP, you might need to enter the EAP user name on the
phone in the domain\username format when authenticating with a Windows
domain.
• Check that the correct EAP username and password are entered on phone.