Draytek Vigor2820 Series User Manual page 223

Packet-OVERDRIVE
Rate Control
network devices only support long preamble. Check it to use
Long Preamble if needed to communicate with this kind of
devices.
This feature can enhance the performance in data transmission
about 40%* more (by checking Tx Burst). It is active only
when both sides of Access Point and Station (in wireless
client) invoke this function at the same time. That is, the
wireless client must support this feature and invoke the
function, too.
Note: Vigor N61 wireless adapter supports this function.
Therefore, you can use and install it into your PC for matching
with Packet-OVERDRIVE (refer to the following picture of
Vigor N61 wireless utility window, choose Enable for
TxBURST on the tab of Option).
It controls the data transmission rate through wireless
connection.
Upload – Check Enable and type the transmitting rate for data
upload. Default value is 30,000 kbps.
Download – Type the transmitting rate for data download.
Default value is 30,000 kbps.
213
Vigor2820 Series User's Guide