300Mbps Wireless N ADSL2+ Modem Router
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• Channel: Select the 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.
• Transmit Power: Here you can specify the transmit power of modem router. You can
select High, Medium or Low which you would like. High is the default setting and is
recommended.
• 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 modem router to synchronize the wireless network. The default value is 100.
• 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
modem 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 modem
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.
• Wireless Mode: In the drop-down list you can select 802.11b, 802.11g, 802.11n,
802.11b+g, 802.11g+n and 802.11b+g+n. 802.11b+g+n allows both 802.11b, 802.11g
and 802.11n wireless stations to connect to the modem 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.
• Channel Bandwidth: Select the Bandwidth you want to use from the drop-down List.
There are three options, Auto, 20 MHz and 40 MHz. If bigger bandwidth is selected,
device could transmit and receive data with higher speed.
• Extension Channel: If Auto or 40 MHz is selected, this option will be displayed.
• Guard Interval: If 20MHz is selected, this option will be displayed. And then you can
select the guard interval you want from the drop-down list.
• 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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