Cisco 7920 - Unified Wireless IP Phone VoIP, Руководство администратора

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Cisco Wireless IP Phone 7920 Administration Guide for Cisco CallManager Release 4.0 and 4.1
OL-7104-01
Chapter 2 An Overview of the Wireless Network
Understanding the Phone Startup Process
3.
Authenticating with
access point The Cisco Wireless IP Phone 7920 begins the
authenticating process.
• If set for Open , then any device can
authenticate to the access point. For added
security, static WEP encryption might
optionally be used.
•
If set to Shared Key , the phone encrypts the
challenge text using the WEP key and the
access point must verify that the WEP key
was used to encrypt the challenge text
before network access is available.
•
If set for LEAP , then the LEAP user name
and password are authenticated by the
RADIUS server before network access is
available.
•
If set for AKM , the phone looks for an
access point with one of the following key
management options enabled:
–
WPA or CCKM—The phone
authenticates with the RADIUS server.
–
WPA-PSK—The phone authenticates
with the access point using the
pre-shared key password.
Security Mechanisms in
the Wireless Network,
page 2-13
Table 2-5 Cisco IP Phone Startup Process (continued)
Step Description Related Topics