ZyXEL Communications NWA1120 Series User Manual page 69

Table 13 Wireless LAN > Wireless Settings: Wireless Client (continued)
LABEL
SSID Profile
Channel
Channel Width
Advanced Settings
Output Power
Preamble Type
RTS/CTS
Threshold
Fragmentation
Extension
channel
protection mode
NWA1120 Series User's Guide
DESCRIPTION
The SSID (Service Set IDentifier) identifies the Service Set with which a wireless station is
associated. Wireless stations associating to the access point (AP) must have the same
SSID.
In this field, select the SSID profile of the AP you want to use. Click Apply.
The SSID used in the selected SSID profile automatically changes to be the one you select
in the Site Survey screen.
Set the security configuration for this operating mode in the Wireless LAN > Security
screen. Check the Dashboard screen to check if the settings you set show in the WLAN
information.
Note: If you are configuring the NWA from a computer connected to the wireless LAN and you
change the NWA's SSID or security settings, you will lose your wireless connection
when you press Apply to confirm. You must then change the wireless settings of your
computer to match the NWA's new settings.
This shows the operating frequency/channel in use. This field is read-only when you select
Client as your operation mode.
This field is not available in the NWA1123-NI.
A standard 20MHz channel offers transfer speeds of up to 150Mbps whereas a 40MHz
channel uses two standard channels and offers speeds of up to 300Mbps. However, not all
devices support 40MHz channels.
Select the channel bandwidth you want to use for your wireless network.
It is recommended that you select 20/40MHz. This allows the NWA to adjust the channel
bandwidth depending on network conditions.
Select 20MHz if you want to lessen radio interference with other wireless devices in your
neighborhood or the AP do not support channel bonding.
Set the output power of the NWA in this field. If there is a high density of APs in an area,
decrease the output power of the NWA to reduce interference with other APs. Select one of
the following Full (Full Power), 50%, 25% or 12.5%. See the product specifications for
more information on your NWA's output power.
Select Dynamic to have the NWA automatically use short preamble when the wireless
network your NWA is connected to supports it, otherwise the NWA uses long preamble.
Select Long preamble if you are unsure what preamble mode the wireless device your NWA
is connected to supports, and to provide more reliable communications in busy wireless
networks.
(Request To Send) The threshold (number of bytes) for enabling RTS/CTS handshake. Data
with its frame size larger than this value will perform the RTS/CTS handshake. Setting this
attribute to be larger than the maximum MSDU (MAC service data unit) size turns off the
RTS/CTS handshake. Setting this attribute to its smallest value (1) turns on the RTS/CTS
handshake.
This field is not available in the NWA1123-NI.
The threshold (number of bytes) for the fragmentation boundary for directed messages. It
is the maximum data fragment size that can be sent.
You can use CTS to self or RTS-CTS protection mechanism to reduce conflicts with other
wireless networks or hidden wireless clients. The throughput of RTS-CTS is much lower
than CTS to self. Using this mode may decrease your wireless performance.
Chapter 6 Wireless LAN
69