User Manual

48
Advanced_ Advanced Wireless
Transmit Power
Normally the wireless transmitter operates at 100% power. In some circumstances, however,
there might be a need to isolate specific frequencies to a smaller area. By reducing the power
of the radio, you can prevent transmissions from reaching beyond your corporate/home office
or designated wireless area.
Beacon Period
Beacons are packets sent by a wireless router to synchronize wireless devices. Specify a
Beacon Period value between 20 and 1000. The default value is set to 100 milliseconds.
RTS Threshold
When an excessive number of wireless packet collisions are occurring, wireless performance
can be improved by using the RTS/CTS (Request to Send/Clear to Send) handshake protocol.
The wireless transmitter will begin to send RTS frames (and wait for CTS) when data frame
size in bytes is greater than the RTS Threshold. This setting should remain at its default value
of 2346 bytes.
Fragmentation Threshold
Wireless frames can be divided into smaller units (fragments) to improve performance in the
presence of RF interference and at the limits of RF coverage. Fragmentation will occur when
frame size in bytes is greater than the Fragmentation Threshold. This setting should remain at
its default value of 2346 bytes. Setting the Fragmentation value too low may result in poor
performance.
DTIM Interval
A DTIM is a countdown informing clients of the next window for listening to broadcast and
multicast messages. When the wireless router has buffered broadcast or multicast messages
for associated clients, it sends the next DTIM with a DTIM Interval value. Wireless clients
detect the beacons and awaken to receive the broadcast and multicast messages. The default
value is 1. Valid settings are between 1 and 255.