TP-Link EAP225-Wall Omada Controller Software 3.1.13 User Guide - Page 103
AP EDCA Parameters, and the following will appear. AP EDCA parameters affect
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Wi-Fi Multimedia (WMM) By default enabled. With WMM enabled, the EAPs have the QoS function to guarantee the high priority of the transmission of audio and video packets. If 802.11n only mode is selected in 2.4GHz (or 802.11n only, 802.11ac only, or 802.11 n/ac mixed mode in 5GHz), the WMM should be enabled. If WMM is disabled, the 802.11n only mode cannot be selected in 2.4GHz (or 802.11n only, 802.11ac only, or 802.11 n/ac mixed mode in 5GHz). No Acknowledgment By default disabled. You can enable this function to specify that the EAPs should not acknowledge frames with Qos No Ack. Acknowledgeable is recommended if VoIP phones access the network through the EAP Unscheduled Automatic Power Save Delivery By default enabled. As a power management method, it can greatly improve the energy-saving capacity of clients. 3. Click AP EDCA Parameters and the following page will appear. AP EDCA parameters affect traffic flowing from the EAP to the client station. We recommend that you use the defaults. Queue Queue displays the transmission queue. By default, the priority from high to low is Data 0, Data 1, Data 2, and Data 3. The priority may be changed if you reset the EDCA parameters. Data 0 (Voice)-Highest priority queue, minimum delay. Time-sensitive data such as VoIP and streaming media are automatically sent to this queue. Data 1 (Video)-High priority queue, minimum delay. Time-sensitive video data is automatically sent to this queue. Data 2 (Best Effort)-Medium priority queue, medium throughput and delay. Most traditional IP data is sent to this queue. Data 3 (Background)-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). Arbitration InterFrame Space A wait time for data frames. The wait time is measured in slots. Valid values for Arbitration Inter-Frame Space are from 0 to 15. Minimum Contention Window A list to the algorithm that determines the initial random backoff wait time (window) for retry of a transmission. This value can not be higher than the value for the Maximum Contention Window. Maximum Contention Window The upper limit (in milliseconds) for the doubling of the random backoff value. This doubling continues until either the data frame is sent or the Maximum Contention Window size is reached. This value must be higher than the value for the Minimum Contention Window. 97