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 2 An Overview of the Voice Over IP Wireless Network
Components of the VoIP Wireless Network
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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
with a VLAN and its particular authentication and encryption scheme. In order for
wireless client devices to authenticate successfully, you must configure the same
SSIDs with their authentication and encryption schemes on the access points and
on the unified IP
phone.
Some authentication schemes require specific types of encryption. With Open
authentication, you have the option to use static WEP for encryption for added
security. But if you are using Shared Key authentication, you must set static WEP
for encryption, and you must configure a WEP key on the phone.
When using Authenticated Key Management (AKM) for the Cisco Unified
Wireless IP
Phone 7921G, several choices for both authentication and encryption
can be set up on the access points with different SSIDs. When the unified
IP
phone attempts to authenticate, it chooses the access point that advertises the
authentication and encryption scheme that the phone can support. Auto (AKM)
mode can authenticate by using WPA, WPA2, WPA Pre-shared key, or CCKM.
Note • When using WPA Pre-shared key or WPA2 Pre-shared key, the pre-shared key
must be statically set on the phone.These keys must match the keys
configured on the access point.
• When using Auto (AKM), encryption options are automatically configured
for WPA, WPA2, WPA Pre-shared key, WPA2 Pre-shared key, or CCKM.
For more information about configuring authentication and encryption schemes
on access points, refer to the Cisco Aironet Configuration Guide for your model
and release at this URL:
http://www.cisco.com/en/US/products/hw/wireless/ps4570/products_installation
_and_configuration_guides_list.html
Table 2-4 provides a list of authentication and encryption schemes configured on
the Cisco Aironet Access Points supported by the Cisco Unified Wireless
IP
Phone 7921G. The table shows the network configuration option for the phone
that corresponds to the access point configuration.