User manual

DIR-620 Multifunction Wireless Router Supporting GSM, CDMA, WiMAX
with Built-in 4-port Switch
User Manual
Configuring via Web-based Interface
The following fields are available on the tab:
Parameter Description
Station Keep
Alive
The time interval (in seconds) between keep alive checks of wireless devices
from your WLAN. When the value 0 is specified, the checking is disabled.
Beacon Period
The time interval (in milliseconds) between packets sent to synchronize the
wireless network.
RTS Threshold
The minimum size (in bites) of a packet for which an RTS frame is
transmitted.
Frag Threshold
The maximum size (in bites) of a non-fragmented packet. Larger packets are
fragmented (divided).
DTIM Period
The time period (in seconds) between sending a DTIM (a message notifying
on broadcast or multicast transmission) and data transmission.
TX Power
The router's transmit power (in percentage terms).
BG Protection
The 802.11b and 802.11g protection function is used to minimize collisions
between devices of your wireless network.
Select a value from the drop-down list.
Auto: The protection function is enabled and disabled automatically
depending on the state of the network (this value is recommended if your
wireless local area network consists of both 802.11b and 802.11g devices).
Always On: The protection function is always enabled (this setting can
substantially lower the efficiency of your wireless network).
Always Off: The protection function is always disabled.
TX Preamble
This parameter defines the length of the CRC block sent by the router when
communicating to wireless devices.
Select a value from the drop-down list.
Long Preamble.
Short Preamble (this value is recommended for networks with high-
volume traffic).
When you have configured the parameters, click the Change button.
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