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Disabling WMM will deactivate QoS control of station EDCA parameters on 
upstream traffic flowing from the station to the access point 

With WMM disabled, you can still set parameters on the downstream traffic flowing 
from the access point to the client station (AP EDCA parameters).

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To disable WMM extensions, click Disabled.

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To enable WMM extensions, click Enabled.

19.2.3  Configuring Station EDCA Parameters

Station Enhanced Distributed Channel Access (EDCA) Parameters affect traffic 
flowing from the client station to the access point.

Queues are defined for different types of data transmitted from station-to-AP:

Highest priority queue, minimum delay. Time-sensitive data such as VoIP and streaming media 
are automatically sent to this queue.

Highest priority queue, minimum delay. Time-sensitive video data is automatically sent to 
this queue.

Medium priority queue, medium throughput and delay. Most traditional IP data is sent to 
this queue.

Lowest priority queue, high throughput. Bulk data that requires maximum throughput and is not 
time-sensitive is sent to this queue (FTP data, for example).

For more information, see “QoS Queues And Parameters To Coordinate Traffic Flow” on 
page 184.

The Arbitration Inter-Frame Spacing (AIFS) specifies a wait time (in milliseconds) for data 
frames.

For more information, see “EDCF Control Of Data Frames And Arbitration Interframe Spaces” 
on page 186.

Table 19.4  Station EDCA Parameters