ARRIS TG1672G-NA Web GUI User Guide - Manual (Page 69)

Section 2: Web GUI Screens and Configuration Parameter Reference
November 2013 Page 69 of 96
RTS Threshold – Sets the packet size limit. When the threshold is passed, the ready to
send/clear to send (RTS/CTS) function is invoked. The default setting is 2347 bytes. The
allowable setting range is from 1 to 2347 bytes.
Fragment Threshold – Sets the fragmentation threshold. This threshold should be set to equal
the maximum Ethernet frame size allowable on the link including overhead. Setting a lower
threshold can damage data throughput since large frames could be fragmented and/or collisions
could occur. The default setting is 2346. The allowable setting range is from 256 to 2346 bytes.
Frame Burst – Click this checkbox to enable Frame Burst on your network. Frame Bursting is a
transmission technique that increases the throughput of point-to-point 802.11a, b, or g links by
reducing the overhead associated with the wireless transmissions. This results in the ability to
support higher data throughput in mixed and uniform networks. It can, however, result in
unfair allocation of airtime where there are a mix of client devices on the network, of which only
some support Frame-Bursting.
WMM Power Save Mode – Click this checkbox to enable WMM Power Save Mode. WMM
Power Save delivery is a more efficient power management method than legacy 802.11 power
save polling.
Enable Radio (Technician level only) – Click this checkbox to enable or disable the WiFi radio.
802.11n Specific Settings:
Channel Bandwidth – Sets the 802.11n Channel Bandwidth. Options are 20 MHz or 20/40 MHz.
The default setting is 20/40 MHz. If your wireless network is in a very clean RF environment
setting the Channel Bandwidth to 20/40 will increase your throughput by “bonding” two
channels. However, if there are any other wireless routers or access points within range of the
device it will stay in 20 MHz bandwidth regardless of this setting. This is a WiFi Alliance
requirement. (You can verify the channel bandwidth by using the previously mentioned wireless
network scanning software, MetaGeek’s inSSIDer.)
Guard Interval – The spacing between transmission of symbols in nanoseconds. Can be set to
AUTO, 400ns or 800ns. The default is AUTO. Selecting 400ns provides higher throughput in
networks where the coverage distance is small (indoors). Selecting 800ns provides higher
throughput in networks where the coverage distance is large (outdoors).
MCS – Sets the 802.11n Modulation and Coding Scheme to be used. Options are 1 through 23
Legacy and AUTO. The default is AUTO. The 802.11n standard defines a total of 77 MCS. Each
MCS specifies a certain modulation type (BPSK, QPSK, 64-QAM), coding rate (1/2, 3/4), guard
interval (800 or 400ns), and number of spatial streams. Support for MCS 0 - 15 is mandatory for
802.11n access points while support for MCS 0 - 7 is mandatory for 802.11n clients.