D-Link DIR-815 User Manual page 126

DIR-815 Wireless N600 Dual Band Router
User Manual
Parameter
Bandwidth
TX Preamble
When you have configured the parameters, click the Change button.
The channel bandwidth for 802.11n devices in 2.4GHz band.
20MHz: 802.11n devices operate at 20MHz channels.
40MHz: 802.11n devices operate at 40MHz channels.
20/40MHz -: 802.11n devices operate at 20MHz and 40MHz
channels (the channel is combined with the previous adjacent
channel).
20/40MHz +: 802.11n devices operate at 20MHz and 40MHz
channels (the channel is combined with the next adjacent channel).
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).
Page 126 of 173
Configuring via Web-based Interface
Description