US Robotics MAXg User Manual page 54

Wireless MAXg Access Point User Guide
use this feature must also support WMM and have it enabled.
This feature enables the Quality of Service (QoS) function that is used for multimedia
applications, such as Voice-over-IP (VoIP) and video. This allows the network packets of the
multimedia application to have priority over regular data network packets, allowing
multimedia applications to run smoother and with fewer errors.
If you enable WMM, you can then select No-acknowledgement. No-Acknowledgement
refers to the acknowledge policy used at the MAC level. Enabling no-acknowledgement can
result in more efficient throughput but higher error rates in a noisy Radio Frequency (RF)
environment.
With WMM enabled, you can also select Enable APSD (Automatic Power Save Delivery).
APSD manages radio usage for battery-powered devices to allow longer battery life in certain
conditions. APSD allows a longer beacon interval until an application requiring a short packet
exchange interval starts. Voice Over Internet Protocol (VoIP) is an example of application
requiring a short packet exchange interval. APSD affects radio usage and battery life only if
the wireless client also supports APSD.
Note: The Acceleration option MAXg (125 Mbps) is incompatible with WMM. To
enable WMM, you must set the Acceleration option to 54g+ (Xpress™).
Transmission
The fields in this area are for more advanced wireless features that most people do not need
to change. If you do want to change any of these settings, write down the default settings
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