21
Contents/Precautions
z
Cautions on using Bluetooth devices
Bluetooth operates at radio frequencies assigned to the in-house
radio stations for a mobile object identifier that have to be
licensed and are used in production lines of a factory, specific
unlicensed low power radio stations, and amateur radio stations
(hereafter, referred to as “another radio station”) in addition to
industrial, scientific and medical devices or home electric
appliances such as microwave ovens.
1. Before using the handset, make sure that “another radio
station” is not operating nearby.
2. If radio interference between the handset and “another radio
station” occurs, avoid interference by moving immediately to
another place or “turning off the power”.
3. Contact the number listed in “General Inquiries” on the last
page for further details.
Notes about wireless LAN (WLAN)
Wireless LAN (WLAN) uses radio waves to communicate
information. Therefore, it has an advantage of freely
connecting to the LAN within the service area. On the other
hand, if security setting is not set, it is possible for a
malicious third party to intercept the communication
contents or hack. It is recommended to set security setting
at your own risk and judgement.
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Wireless LAN
Do not use wireless LAN near magnetic devices such as electric
appliances or AV/OA devices or in radio waves.
y
Magnetism or radio waves may increase noises or disable
communications (especially when using a microwave oven).
y
When used near TV, radio, etc., reception interference may occur or
channels on the TV screen may be disturbed.
y
If there are multiple wireless LAN access points nearby and the
same channel is used, search may not work correctly.
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Radio frequencies
In the home screen, [
]
▶
[Settings]
▶
[About phone]
▶
[Authentication] to confirm the radio frequencies the wireless LAN of
the handset uses. The followings are the descriptions:
①
②
③ ④
⑤
①
2.4: This radio equipment uses the 2,400 MHz band.
②
DS: The modulation system is the DS-SS system.
③
OF: The modulation system is the OFDM system.
④
4: The estimated coverage distance is 40 m or less.
⑤
: All radio frequencies between 2,400 MHz
and 2,483.5 MHz are used and the frequencies for mobile object
identifiers can be avoided.
Available channels for the handset's wireless LAN are between 1 and
13. Note that other channel access points cannot be connected.
Available channels may vary depending on the country.
For use in an aircraft, contact the airline beforehand.
