Allied Telesis AT-WA7501, AT-WA7500 manual 113

AT-WA7500 and AT-WA7501 Installation and User’s Guide

Table 34. 802.11b Radio Advanced Parameter Descriptions (Continued)

Parameter	Description
Basic Rate	Choose the rate at which the access point
	transmits multicast and beacon frames. In
	general, higher speeds mean shorter range and
	lower speeds mean longer range. Do not set this
	rate higher than the maximum rate at which your
	end devices can receive multicast frames. You
	can set this rate to 11, 5.5, 2, or 1 Mbps. This
	parameter should usually be left at the default 2
	Mbps.
Enable Medium	Determines if you want to specify a reservation
Reservation	threshold. Check this check box to set a threshold
	value. Click Submit Changes, and the
	Reservation Threshold parameter appears.
	If you clear this check box, you may improve
	network response time in installations that usually
	send very small frames or that have no hidden
	stations.
Reservation	Appears only if the Enable Medium Reservation
Threshold	parameter is checked.
	If you enable medium reservation, you need to
	set a threshold value, which is the largest data
	frame that can be transmitted without reserving
	airtime. Airtime is normally reserved to help
	prevent collisions with other transmitters.
Distance Between	Controls the roaming sensitivity of your end
APs	devices. This setting should match the setting on
	your end devices.
	You can use this parameter to virtually reduce the
	range of your access point. If you choose Small
	or Medium, you do not reduce the absolute range
	of your radio, but you modify the collision
	detection mechanism to allow significant overlap
	of the wireless cells. Thus, you create a higher
	performance radio network, but you need more
	access points to cover an area.
Enable Microwave	Determines if the access point activates a
Oven Robustness	modified algorithm for automatic rate fallback,
	which prevents the access point from falling back
	to 1 Mbps when trying to retransmit radio frames
	when 2.4 GHz interference is present.

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