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 7 Viewing Security, Device, Model, and Status Information on the Phone
Viewing the Phone Status Menu
7-14
Cisco Unified Wireless IP Phone 7921G Administration Guide for Cisco Unified CallManager Release 4.1, 4.2, 5.0
OL-10802-02
CTL Installed
A certificate trust list (CTL) file
is installed in the phone.
None. This message is informational
only.
For more information about the CTL file,
refer to Cisco Unified CallManager
Security Guide.
CTL update failed
The phone could not update its
certificate trust list (CTL) file.
Problem with the CTL file on the TFTP
server.
For more information, refer to Cisco
Unified
CallManager Security Guide.
Duplicate IP
Another device is using the IP
address assigned to the phone.
• If the phone has a static IP address,
verify that you have not assigned a
duplicate IP address. See the
“Configuring IP Network Settings”
section on page 4-21 section for
details.
• If you are using DHCP, check the
DHCP server configuration.
LCS operation failed
The locally significant certificate
(LSC) that is used for the
security features did not install
properly.
For information about how to manage the
LSC for your phone, refer to the “Using
the Certificate Authority Proxy Function”
chapter in Cisco
Unified CallManager
Security Guide.
LCS operation complete
The LCS was updated
successfully on the phone.
For information about how to manage the
LSC for your phone, refer to the “Using
the Certificate Authority Proxy Function”
chapter in Cisco
Unified CallManager
Security Guide.
TFTP Error
The phone does not recognize an
error code provided by the TFTP
server.
Contact the Cisco TAC.
Table 7-4 Status Messages (continued)
Message Description Possible Explanation and Action