Cradlepoint mbr1200 User Manual page 23

User Manual / MBR1200B
* - Channels listed above represent US/FCC settings. EU users will see different settings.
Client Timeout: If the access point is not able to communicate with the client it will disconnect it after this
timeout (in seconds).
TX Power: Normally the wireless transmitter operates at 100% power. In some circumstances, however, there
might be a need to isolate specific frequencies to a smaller area. By reducing the power of the radio, you can
prevent transmissions from reaching beyond your corporate/home office or designated wireless area.
RTS Threshold: When an excessive number of wireless packet collisions are occurring, wireless performance
can be improved by using the RTS/CTS (Request to Send/Clear to Send) handshake protocol. The wireless
transmitter will begin to send RTS frames (and wait for CTS) when data frame size in bytes is greater than the
RTS Threshold. This setting should remain at its default value.
Fragmentation Threshold: Wireless frames can be divided into smaller units (fragments) to improve
performance in the presence of RF interference and at the limits of RF coverage. Fragmentation will occur
when frame size in bytes is greater than the Fragmentation Threshold. This setting should remain at its default
value. Setting the Fragmentation value too low may result in poor performance.
DTIM: A DTIM is a countdown informing clients of the next window for listening to broadcast and multicast
messages. When the wireless router has buffered broadcast or multicast messages for associated clients, it
sends the next DTIM with a DTIM Interval value. Wireless clients detect the beacons and awaken to receive the
broadcast and multicast messages. The default value is 1. Valid settings are between 1 and 255.
Beacon: Beacons are packets sent by a wireless router to synchronize wireless devices. Specify a Beacon
Period value between 20 and 1000 milliseconds.
WPS: WiFi Protected Setup is a method for easy and secure establishment of a wireless network. It can be
used instead of passwords when connecting clients that support WPS.
Short Slot: Slot Time is the period wireless clients use in determining if the channel is free for transmission.
Enabling this value allows clients that can utilize a shorter time to do so. Disabling this option forces all
clients to use a longer backoff check and thus may reduce network throughput while reducing the number of
transmission collisions.
Wireless Mode: Select the WiFi clients with which the router will be compatible. Greater compatibility is a
tradeoff with better performance. For greatest compatibility with all WiFi devices, select 802.11 b/g/n.
2.4 GHz options
• 802.11 b
• 802.11 b/g
• 802.11 b/g/n
• 802.11 n
Channel Width: Selects whether the router uses a single 20 MHz channel to send/receive, or uses two adjacent
20 MHz channels to create a 40 MHz channel. Higher performance is possible with the 40 MHz channel.
Selecting Auto is generally best. Enabling WiFi as WAN will force 20 MHz only mode.
Extended Channel: When operating in 40 MHz mode the access point will use an extended channel either below
or above the current channel. Optimal selection will depend on the channels of other networks in the area.
MCS: 802.11n uses multiple Modulation Coding Schemes to enable higher throughput in various environments.
Since clients can dynamically change rates depending on environment, selecting Auto is generally best.
Short GI: Short GI is an optimization for shortening the interval between transmissions. May be incompatible
with older clients.
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