User manual

Frequently Asked Questions
40
o RTS (Request To Send) is an RS-232 signal sent from the
transmitting station to the receiving station requesting permission
to transmit. RTS is a collision avoidance method used by all
802.11b wireless networking devices. In most cases you will not
need to activate or manage RTS unless you are in an
Infrastructure environment where all nodes are in the range of the
Access Point but may be out of range of each other. It is
recommended to keep
this setting at its default value and keep this
feature disabled.
o Authentication Algorithm is the means by which one station is
authorized to communicate with another. In an Open System,
any station can request authorization in accordance with the WECA
standard. In a Shared key system, only stations that possess a
secret encrypted key may participate in the network. This is a low
level security key which allows the equipment with the shared key
algorithm to see each other on the wireless LAN.
o The ability of the antenna to shape the signal and focus it in a
particular direction is called Antenna Gain, and is expressed in
terms of how much stronger the signal in the desired direction is,
compared to the worst possible antenna, which distributes the
signal
evenly in all directions (an Isotropic Radiator). To express
the relationship to the Isotropic reference, this is abbreviated as
dBi.
The typical omni-directional stick antenna is rated at 6-8 dBi,
indicating that that by redirecting the signal that would have gone
straight up or down to the horizontal level, 4 times as much signal
is available horizontally. A parabolic reflector design can easily
achieve 24 dBi.
What is RTS Threshold?
What is Authentication Algorithm?
What is DBI?