Edimax Technology PS-2207SUg - Manual (Page 53)

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Parameters Description
Data Rate
There are several data rates including
Auto/1/2/5.5/11/6/9/12/18/24/36/48/54Mbps for you to
select. When the “Auto” is selected, the device will
choose the most suitable transmission rate
automatically.
Preamble Type
The preamble defines the length of the CRC block for
communication among wireless devices. There are two
modes including Long and Short Preamble. Therefore,
for an IEEE 802.11g network to be interoperable with
IEEE 802.11b clients, it must use larger preambles than
it would normally need.
CTS Protect
The RTS/CTS protection mechanism is needed to
ensure that all the devices can access the medium
when IEEE 802.11b and IEEE 802.11g devices are
co-existence in the same network. Especially, when
Hidden Node is existent. Hidden Node occurs when
different clients connected to the same access point
cannot see each other, decide that the channel is free,
and transmit at the same time. The frames collide when
they reach the access point and all of them are rejected.
When CTS protect is enabled, the throughput will be a
little lower but it will help to reduce the packet loss.
Select “Auto”, the server will automatically enable the
CTS protection mechanism when it is needed. Select
“Always”, the function will be always enabled. If you
don’t want to enable the function, please select “None”.
Click <Apply> at the bottom of the screen to save the above configurations.