FortiWiFi-60B FortiOS 3.0 MR6 Install Guide
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01-30006-0447-20080131
Setting up a wireless network
Installing
Radio Frequency interface
The 802.11b/g standard uses a frequency range of 2.4 to 2.483 GHz and the
802.11a standard transmit at 5 GHz. Radio frequency (RF) interference occurs
when other devices send RF signals during their normal operation that use the
same frequency as the FortiWiFi AP. Wireless devices such as cordless phones,
microwave ovens and Bluetooth devices can interfere with packet transmissions
on a wireless network.
To avoid RF interference:
• Remove these devices from the immediate area where users are working.
Something as simple as a Bluetooth enabled mouse may cause transmission
interruptions.
• Keep the FortiWiFi AP and wireless devices at least 10 feet away from
appliances such as microwave ovens and cordless phones.
• If you must have a cordless phone, select one that does not use the 2.4GHz
frequency range for b/g or 5GHZ frequency range for wireless a.
• Consider more FortiWiFi APs to help strengthen the signal. The weaker the
signal, the slower the transmission will be as it tries to compete against other
wireless devices.
• Set a channel that users and FortiWiFi APs will specifically use can improve
signal quality.
Using multiple access points
If you cannot avoid some of these impediments due to the shape of the office or
building materials used, you may need to use multiple FortiWiFi APs to help
distribute the radio signal around the room.
Figure 3
shows how positioning two
FortiWiFi APs within a uniquely shaped office space helps to distribute signals
around the area.
Figure 3: Using multiple APs to provide a constant strong signal.
Elevator
Washrooms
Stairs
