Cisco 7920 - Unified Wireless IP Phone VoIP Administration Manual page 50

Components of the VoIP Wireless Network
I
Cisco Wireless IP Phone 7920 Administration Guide for Cisco CallManager Release 4.0 and 4.1
2-16
When using Authenticated Key Management (AKM) for the Cisco Wireless
IP Phone 7920, several choices for both authentication and encryption can be set
up on the access points with different SSIDs. When the Cisco Wireless IP Phone
attempts to authenticate, it chooses the access point that advertises the
authentication and encryption scheme that the phone can support. AKM can
authenticate by using WPA Pre-shared key, WPA, or CCKM.
When you set up AKM on the phone, the access point can provide the encryption
key when using WPA Pre-shared key or the key can be configured on the phone
when using WEP. When using AKM, encryption options include WPA Pre-shared
key, TKIP for WPA authentication, and TKIP or WEP for CCKM authentication.
For more information about authentication and encryption schemes and how they
are configured, 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 2-2 provides a list of authentication and encryption schemes configured on
the Cisco Aironet Access Points supported by the Cisco Wireless IP Phone 7920.
The table shows the network configuration option for the phone that corresponds
to the access point configuration.
Table 2-2 Authentication and Encryption Schemes
Access Point Configuration
Authentication Encryption
Open Static WEP
(optional)
Shared key Static WEP
(mandatory)
Network EAP WEP
Network EAP TKIP or WEP
(WDS required
for CCKM)
Network EAP, TKIP with WPA
Open TKIP with WPA
or WPA
Pre-shared Key
Chapter 2 An Overview of the Wireless Network
Cisco Wireless IP Phone 7920
Authentication
Open (optional)
Shared Key
LEAP
AKM with CCKM TKIP or WEP
AKM with WPA
AKM with WPA
Pre-shared Key
Encryption
None or Static
WEP
Static WEP
(mandatory)
WEP
TKIP
TKIP
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