ZyXEL Communications 802.11b/g/n poe access point ユーザーズマニュアル

Chapter 5 Wireless Settings Screen

NWA1100-N User’s Guide

Wireless Mode

Select 802.11b/g to allow both IEEE802.11b and IEEE802.11g compliant WLAN devices 
to associate with the NWA. The transmission rate of your NWA might be reduced.

Select 802.11b/g/n to allow IEEE802.11b, IEEE802.11g and IEEE802.11n compliant 
WLAN devices to associate with the Device. The transmission rate of the NWA might be 
reduced.

SSID Profile

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. Select an SSID Profile from the drop-down list box.

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.

Channel

Select the operating frequency/channel depending on your particular region from the 
drop-down list box. 

Channel Width 

This field displays only when you select 802.11 b/g/n in the 802.11 Wireless Mode 
field. 

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 20/40 (20/40 MHz). This allows the NWA to adjust the 
channel bandwidth depending on network conditions.

Select 20 MHz if you want to lessen radio interference with other wireless devices in your 
neighborhood.

Advanced Settings

Click + or - to display or hide the following fields.

Beacon Interval

When a wirelessly network device sends a beacon, it includes with it a beacon interval. 
This specifies the time period before the device sends the beacon again. The interval tells 
receiving devices on the network how long they can wait in lowpower mode before waking 
up to handle the beacon. A high value helps save current consumption of the access point.

DTIM Interval

Delivery Traffic Indication Message (DTIM) is the time period after which broadcast and 
multicast packets are transmitted to mobile clients in the Active Power Management 
mode. A high DTIM value can cause clients to lose connectivity with the network. 

Output Power 

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%, 12.5% or Min (Minimum). See the 
product specifications for more information on your NWA’s output power.

Preamble Type

Select Dynamic to have the AP automatically use short preamble when wireless adapters 
support it, otherwise the AP uses long preamble.

Select Long if you are unsure what preamble mode the wireless adapters support, and to 
provide more reliable communications in busy wireless networks. 

RTS/CTS 
Threshold

(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. 

Fragmentation

The threshold (number of bytes) for the fragmentation boundary for directed messages. It 
is the maximum data fragment size that can be sent.

Wireless > Wireless Settings: Access Point (continued)