TP-Link TD851W User Manual page 33

TD851W
Access Point Settings: These are the settings of the access point. You can configure the
rules to allow wireless-equipped computers and other devices to communicate with a wireless
network.
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Access Point: Select Activated to allow wireless station to associate with the access
point.
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Channel: Select the country and channel you want to use from the drop-down List of
Channel. This field determines which operating frequency will be used. It is not
necessary to change the wireless channel unless you notice interference problems with
another nearby access point.
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Beacon Interval: Enter a value between 20-1000 milliseconds. The Beacon Interval
value indicates the frequency interval of the beacon. A beacon is a packet broadcast by
the Router to synchronize the wireless network. The default value is 100.
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RTS/CTS Threshold: Should you encounter inconsistent data flow, only minor reduction
of the default value 2347 is recommended. If a network packet is smaller than the preset
RTS threshold size, the RTS/CTS mechanism will not be enabled. The Router sends
Request to Send (RTS) frames to a particular receiving station and negotiates the
sending of a data frame. After receiving an RTS, the wireless station responds with a
Clear to Send (CTS) frame to acknowledge the right to begin transmission. In most cases,
keep its default value of 2347.
•
Fragmentation Threshold: This value specifies the maximum size for a packet before
data is fragmented into multiple packets. If you experience a high packet error rate, you
may slightly increase the Fragmentation Threshold. Setting the Fragmentation Threshold
too low may result in poor network performance. Only minor reduction of the default value
is recommended. In most cases, it should remain at its default value of 2346.
•
DTIM: This value, between 1 and 255, indicates the interval of the Delivery Traffic
Indication Message (DTIM). A DTIM field is a countdown field informing clients of the next
window for listening to broadcast and multicast messages. When the Router has buffered
broadcast or 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. The default value is 1.
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Wireless Mode: In the drop-down list you can select "802.11n", "802.11g", "802.11b" or
"802.11 b+g ","802.11 g+n ", "802.11 b+g+n " allows both 802.11g, 802.11b and 802.11n
wireless stations to connect to the Router.
11n Settings: These are the settings of the 11n parameters. If "802.11n", "802.11g+n" or
"802.11b+g+n" is selected for Wireless mode, these settings will be displayed.
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Channel Bandwidth: Select the Bandwidth you want to use from the drop-down List.
There are two options, "20 MHz" and "20/40 MHz". If bigger bandwidth is selected, device
could transmit and receive data with higher speed.
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Extension Channel: If "20/40 MHz" is selected, this option will be displayed.
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Guard Interval: Select the guard interval you want from the drop-down list.
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MCS: Select the wireless transmission rate from the drop-down list. By default, the option
is AUTO.
Multiple SSIDs Settings: These are the settings of the SSID.
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SSID Index: The index of the SSID, and in this model, you can only leave it as a default
value of 1.
150Mbps Wireless N ADSL2+ Modem Router User Guide
26