US Robotics 5430 Installation Manual page 6

R24.0451.00 5430 English Install.fm Page 6 Wednesday, February 4, 2004 5:20 PM
Basic Rate Set:
You have the option of supporting all rates as listed in the Rate section above or using the 1, 2
Mbps rates which will support only older 802.11b implementations.
Fragmentation Threshold
This threshold is used to fragment packets which help improve performance in the presence of RF
interference.
RTS Threshold (Request to Send Threshold)
The RTS threshold determines the packet size of a transmission and, through the use of an access
point, helps control traffic flow.
DTIM Interval
The DTIM Interval sets the Wake-up interval for clients in power-saving mode.
Beacon Interval
A beacon is a packet of information that is sent from a connected device to all other devices
where it announces its availability and readiness. A beacon interval is a period of time (sent with
the beacon) before sending the beacon again. The beacon interval may be adjusted in millisec-
onds (ms).
Preamble Type
Preambles are a sequence of binary bits that help the receivers synchronize and ready for receipt
of a data transmission. Some older wireless systems like 802.11b implementation use shorter
preambles. If you are having difficulty connecting to an older 802.11b device, try using a short
preamble.
54g+ Xpress
Xpress is a proprietary technology that allows two devices using this technology to connect at
speeds greater than the standard 54Mbps rate.
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