3Com 3CRWEASYA73 / WL-575 User Manual page 276

C 6: C L
HAPTER OMMAND INE
preamble
This command sets the length of the signal preamble that is used at the start of a
802.11b/g data transmission.
Syntax
Default Setting
Command Mode
Command Usage
Example
AP(if-wireless g)#preamble short
AP(if-wireless g)#
antenna control
This command selects the use of two diversity antennas or a single antenna for
the radio interface.
NOTE: Antenna control is only supported on the 802.11b/g radio. Antenna control
for the 802.11a radio is determined by the Antenna ID selected.
Syntax
I
NTERFACE
preamble [long | short-or-long]
• long - Sets the preamble to long (192 microseconds).
• short-or-long - Sets the preamble to short if no 802.11b clients are
detected (96 microseconds).
Short-or-Long
Interface Configuration (Wireless - 802.11b/g)
• Using a short preamble instead of a long preamble can increase data
throughput on the access point, but requires that all clients can support a
short preamble.
• Set the preamble to long to ensure the access point can support all
802.11b and 802.11g clients.
antenna control <diversity | left | right>
• diversity - The radio uses both antennas in a diversity system.
• right - Activates the right 2.4 Ghz antenna.
• left - Activates the left 2.4 Ghz antenna.
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