ORiNG IAR-142 Series, User Manual, Page: 34 / 57

IAR-142-/142+-3G User Manual
ORing Industrial Networking Corp. 33
multicast messages for associated clients, it sends the next DTIM
with a DTIM Interval value. Its clients hear the beacons and
awaken to receive the broadcast and multicast messages.
Fragmentation
Threshold
The value specifies the maximum size for a packet before data is
fragmented into multiple packets. The value should remain at the
default 2346 (the range is 256 - 2346 bytes). If you experience a
high packet error rate, you may slightly increase the value. Setting
the value too low may result in poor network performance. Only
minor modifications of this value are recommended.
RTS Threshold The RTS (Request to Send) Threshold is the amount of time a
wireless device, attempting to send, will wait for a recipient to
acknowledge that it is ready. Normally, the AP sends a RTS frame
to a station and negotiates the sending of data. After receiving the
RTS, the station responds with a CTS (Clear to Send) frame to
acknowledge the right to begin transmission. To ensure
communication, the maximum value should be used, which is the
default value 2347 (the range is 0-2347 bytes). If a network
packet is smaller than the preset RTS threshold size, the
RTS/CTS mechanism will not be enabled.
Xmit Power Xmit Power allows you to change the power output level. This
value ranges from 1 - 100 percent, default value is 100 percent.
A safe increase of up to 60 percent would be suitable for most
users. Higher power settings are not recommended for users
due to excess heat generated by the radio chipset, which can
affect the life of the AP.
Max Client Threshold This is the maximum number of clients for an AP. When the
number of clients exceeds the value, the AP will reject the
roaming connection. This value is only used on AP-mode
equipment.
Wireless Network
Mode
You can select single or mixed wireless modes. In mixed mode,
the device is able to offer various WiFi network types (B, G and N)
at the same time from a single 2.4GHz radio. 802.11n
transmission is always embedded in an 802.11a, for 5GHz radios,
or 802.11g for 2.4GHz radio transmissions. This is called Mixed
Mode Format protection (also known as L-SIG TXOP Protection).
Preamble Available values include Long and Short , with Long as the
default value. If all clients and access points in your wireless