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Cisco 819 Series Integrated Services Routers Software Configuration Guide
OL-23590-02
Chapter 3 Wireless Local Area Network
WLAN Features
AP802 Dual Radio contains two different types of wireless radio that can support connections on both
2.4 GHz used by 802.11b, 802.11g, and 802.11n and 5 GHz used by 802.11a and 802.11n.
With the dual-radio/dual-band IEEE 802.11n access point, the Cisco 819HGW and Cisco 819HWD ISRs
offer a secure, integrated access point in a single device. The ISRs support both autonomous and unified
modes and are backward compatible with 802.11a/b/g.
The routers support IEEE 802.11n draft 2.0 and use multiple-input, multiple-output (MIMO) technology
that provides increased throughput, reliability, and predictability.
For complete information on how to configure wireless device and radio settings, see Basic Wireless
Device Configuration and Configuring Radio Settings.
Images Supported
For the images supported in the AP802 Dual radio, see Minimum software version needed to support
AP802.
CleanAir Technology
The CleanAir is a new wireless technology that intelligently avoids Radio Frequency (RF) to protect
802.11n performance. For more information, see
Cisco CleanAir Technology. This feature is supported
in all SKUs.
Dynamic Frequency Selection
The Dynamic Frequency Selection (DFS) is the process of detecting radar signals that must be protected
against 802.11a interference and upon detection switching the 802.11a operating frequency to one that
is not interfering with the radar systems. Transmit Power Control (TPC) is used to adapt the transmission
power based on regulatory requirements and range information.
Note The DFS functionality is disabled for FCC SKUs pending FCC certification. For more information, see
Dynamic Frequency Selection and IEEE 802.11h Transmit Power Control.
LEDs
The WLAN LED is located at the front panel of the router. Table 3-1 describes the WLAN LED for the
Cisco 819HGW and Cisco 819HWD ISRs.