Compex Technologies WPE54 - Manual (Page 59)

Chapter 4 Common Configuration
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4.4.3 WMM Parameters
(available in all modes except for Wireless Bridge Link)
Wireless Multimedia (WMM) is a QoS (Quality of Service) standard in
IEEE802.11E that we have adopted to improve and support the user
experience for multimedia, video, and voice applications by prioritizing data
traffic. QoS can be realized through 4 different Access Categories (AC). Each
AC type consists of an independent transmit queue, and a channel access
function with its own parameters.