D-Link DAP-3520 - AirPremier N Dual Band Exterior PoE Access Point User Manual page 29

Transmit Power:
This setting determines the power level of the wireless transmission. Transmitting power can be adjusted to eliminate overlapping of wireless
area coverage between two access points where interference is a major concern. For example, if wireless coverage is intended for half of
the area, then select 50% as the option. Use the drop-down menu to select 100%, 50%, 25%, or.12.5%.
WMM (Wi-Fi Multimedia):
WMM stands for Wi-Fi Multimedia. Enabling this feature will improve the user experience for audio and video applications over a Wi-Fi
network.
Ack Time Out (2.4 GHz, 64~200) or Ack Time Out (5 GHz, 50~200):
To effectively optimize throughput over long distance links enter a value for Acknowledgement Time Out between 50 and 200 microseconds
for 5 GHz or from 64 to 200 microseconds in the 2.4 GHz in the field provided.
Short GI:
Select Enable or Disable. Enabling a short guard interval can increase throughput. However, be aware that it can also increase the error
rate in some installations due to increased sensitivity to radio-frequency installations.
IGMP Snooping:
Select Enable or Disable. Internet Group Management Protocol allows the AP to recognize IGMP queries and reports sent between
routers and an IGMP host (wireless STA). When IGMP snooping is enabled, the AP will forward multicast packets to an IGMP host based
on IGMP messages passing through the AP.
Connection Limit:
Select Enable or Disable. This is an option for load balancing. This determines whether to limit the number of users accessing this
device. The exact number is entered in the User Limit field below. This feature allows the user to share the wireless network traffic and the
client using multiple APs. If this function is enabled, when the number of users exceeds this value, the DAP-3520 will not allow clients to
associate with the AP.
User Limit (0 - 64):
Set the maximum amount of users that are allowed access (0-64 users).To use this feature, the Connection Limit above must be enabled.
For most users, a limit of 10 is recommended. The default setting is 20.
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