Cisco 4400 Series User Manual

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Cisco Wireless LAN Controller Configuration Guide
OL-17037-01
Chapter 6 Configuring WLANsWireless Device Access
Configuring WLANs
The 7920 support mode has two options:
– Support for 7920 phones that require call admission control (CAC) to be configured on and
advertised by the client device (these are typically older 7920 phones)
– Support for 7920 phones that require CAC to be configured on and advertised by the access
point (these are typically newer 7920 phones)
When access point-controlled CAC is enabled, the access point sends out a Cisco proprietary
CAC Information Element (IE) and does not send out the standard QBSS IE.
You can use the controller GUI or CLI to configure QBSS. QBSS is disabled by default.

Cisco 4400 Series Specifications

General

Product Type	Wireless LAN Controller
Manageable	Yes
Management Port	Yes
Power over Ethernet (PoE)	No
Operating Temperature	32 to 104°F (0 to 40°C)
Security	WPA, WPA2, 802.1X, AES, TKIP
Power Supply	AC Power Supply
Wireless LAN Standard	IEEE 802.11a/b/g/n
Form Factor	Rack-mountable
Redundancy	Yes
Operating Humidity	10% to 90% non-condensing