Cisco AP541N-A-K9 Administration Guide - Page 105

Wireless Configuring Quality of Service (QoS) 4 Table 24 QoS Parameters (Continued) Field Description cwMax The value specified here in the Maximum Contention (Maximum Window is the upper limit (in milliseconds) for the doubling Contention Window) of the random backoff value. This doubling continues until either the data frame is sent or the Maximum Contention Window size is reached. TXOP Limit Other QoS Settings No Acknowledgement Automatic Power Save Delivery Once the Maximum Contention Window size is reached, retries will continue until a maximum number of retries allowed is reached. The TXOP Limit is a station EDCA parameter and only applies to traffic flowing from the client station to the access point. The Transmission Opportunity (TXOP) is an interval of time, in milliseconds, when a client has the right to initiate transmissions towards the access point. The TXOP Limit maximum value is 65535. Select On to specify that the access point should not acknowledge frames with QosNoAck as the service class value. Select On to enable Automatic Power Save Delivery (APSD), which is a power management method. APSD is recommended if VoIP phones access the network through the access point. NOTE After you configure the QoS settings, you must click Apply to apply the changes and to save the settings. Changing some settings might cause the access point to stop and restart system processes. If this happens, wireless clients will temporarily lose connectivity. We recommend that you change access point settings when WLAN traffic is low. Cisco AP 541N Dual-band Single-radio Access Point Quick Start Guide 102