Allied Telesis AT-TQ2450 manual 133

AT-TQ2450 Wireless Access Point User’s Guide

Table 23. Modify QoS Queue Parameters Window (Continued)

Column	Description
cwMax (Maximum	Specifies the maximum contention
Contention Window)	window, which is the upper limit (in
	milliseconds) for doubling the random
	backoff value. The doubling continues
	until either the data frame is sent or the
	maximum contention size is reached.
	Once the maximum contention window is
	reached, retries continue until a maximum
	number of retries is reached.
	Valid values for this parameter are: 1, 3, 7,
	15, 31, 63, 127, 255, 511, and 1023. This
	parameter must be higher than the cwMin
	value.
Max. Burst Length	Specifies the maximum burst length (in
	milliseconds) for packet bursts on the
	wireless network. A packet burst is a
	collection of multiple frames transmitted
	without header information. The
	decreased overhead results in higher
	throughput and better performance.
	This is an AP EDCA parameter only and
	as such applies only to egress traffic from
	the access point to the clients.
	The range is 0.0 to 999 milliseconds.
Wi-Fi Multimedia	Enables or disables QoS prioritization and
	coordination. When WMM is enabled, the
	access point uses the AP EDCA settings
	to control the flow of downstream traffic to
	the wireless clients and the station EDCA
	parameters to control the flow of upstream
	traffic from the clients.
	When WMM is disabled, QoS control of
	the upstream traffic from the clients is
	disabled. You can still continue to
	configure some of the parameters that
	control the downstream traffic from the
	access point to the clients

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