User's Manual

Table Of Contents
Chapter 6 Wireless 71
6.10 Technical Reference
This section discusses wireless LANs in depth.
6.10.1 Additional Wireless Terms
The following table describes some wireless network terms and acronyms used in the Device’s web
configurator.
Table 23 Addit
ional Wireless Terms
TERM DESCRIPTION
RTS/CTS Threshold In a wireless network which covers a large ar
ea, wireless devices are sometimes not
aware of each others presence. This may cause them to send information to the AP at
the same time and result in information colliding and not getting through.
By setting this value lower than the default value, the wir
eless devices must sometimes
get permission to send information to the Device. The lower the value, the more often
the devices must get permission.
If this value is greater than the fragmentation threshold value (see below), then
wir
eless devices never have to get permission to send information to the Device.
Preamble A preamble affects the timing in your wireless network. There are two preamble
modes: l
ong and short. If a device uses a different preamble mode than the Device
does, it cannot communicate with the Device.
Authentication The process of verifying whether a wireless device is allowed to use the wireless
network.
Fragmentation
Thr
eshold
A small fragmentation threshold is recommended for busy networks, while a larger
threshold provides faster performance if the network is not very busy.
Channel Width A standard 20MHz channel offers transfer speeds o
f up to 150Mbps whereas a 40MHz
channel uses two standard channels and offers speeds of up to 300 Mbps.
Select 20
MHz if you want to lessen radio interference with other wireless devices in your
neighborhood or the wireless clients do not support channel bonding.
Select Au
to to have the Device configure the wireless channel width automatically.
This field is available only when you set the 80
2.11 Mode to 802.11n or 802.11b+g+n in
the Advanced Setup screen.
Apply Click this to save your changes.
Cancel Click this to restore your pr
eviously saved settings.
Table 22 Network Setting > Wireless> Advanced (continued)
LABEL DESCRIPTION