Nokia N900 User Guide - Page 28

Operation at 2.4 GHz - features

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28 Connect your device Define data roaming settings Roaming is based on specific roaming agreements between your network service provider and other network service providers, to enable you to use network services outside your home network, for example when travelling abroad. Always ask is selected by default. A connection is only attempted when a confirmation note is accepted. If you select Always allow, all packet data connections abroad are handled as in the home network. For further information and roaming costs, contact your network service provider. Use a WLAN connection You can use a wireless LAN (WLAN) data connection to connect to the internet. Only one connection to one wireless LAN can be active at a time, but several applications can use the same internet access point. About WLAN To use a wireless LAN (WLAN) connection, it must be available in the location, and your device must be connected to the WLAN. Some WLANs are protected, and you need an access key from the service provider to connect to them. Note: In France, you are only allowed to use WLAN indoors. Features that use WLAN, or that are allowed to run in the background while using other features, increase the demand on battery power and reduce the battery life. Your device supports the following WLAN features: • IEEE 802.11b/g standard • Operation at 2.4 GHz • Wired equivalent privacy (WEP) with keys up to 128 bits, and Wi-Fi protected access (WPA2-Enterprise) authentication method. These functions can be used only if they are supported by the network. Important: Always enable one of the available encryption methods to increase the security of your wireless LAN connection. Using encryption reduces the risk of unauthorised access to your data. Related topics • See "Create a WLAN connection", p. 29. • See "Security settings", p. 29. Operating modes There are two operating modes in WLAN: infrastructure and ad hoc. The infrastructure operating mode allows two kinds of communication: wireless devices are connected to each other through a WLAN access point device, or wireless devices are connected to a wired LAN through a WLAN access point device. In the ad hoc operating mode, devices can send and receive data directly with each other.

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Define data roaming settings
Roaming is based on specific roaming agreements between
your network service provider and other network service
providers, to enable you to use network services outside your
home network, for example when travelling abroad.
Always ask
is selected by default. A connection is only
attempted when a confirmation note is accepted. If you select
Always allow
, all packet data connections abroad are
handled as in the home network.
For further information and roaming costs, contact your
network service provider.
Use a WLAN connection
You can use a wireless LAN (WLAN) data connection to
connect to the internet. Only one connection to one wireless
LAN can be active at a time, but several applications can use
the same internet access point.
About WLAN
To use a wireless LAN (WLAN) connection, it must be available
in the location, and your device must be connected to the
WLAN. Some WLANs are protected, and you need an access
key from the service provider to connect to them.
Note:
In France, you are only allowed to use WLAN indoors.
Features that use WLAN, or that are allowed to run in the
background while using other features, increase the demand
on battery power and reduce the battery life.
Your device supports the following WLAN features:
•
IEEE 802.11b/g standard
•
Operation at 2.4 GHz
•
Wired equivalent privacy (WEP) with keys up to 128 bits,
and Wi-Fi protected access (WPA2-Enterprise)
authentication method. These functions can be used only
if they are supported by the network.
Important:
Always enable one of the available encryption
methods to increase the security of your wireless LAN
connection. Using encryption reduces the risk of
unauthorised access to your data.
Related topics
•
See "Create a WLAN connection"
, p.
29
.
•
See "Security settings"
, p.
29
.
Operating modes
There are two operating modes in WLAN: infrastructure and
ad hoc.
The infrastructure operating mode allows two kinds of
communication: wireless devices are connected to each
other through a WLAN access point device, or wireless devices
are connected to a wired LAN through a WLAN access point
device.
In the ad hoc operating mode, devices can send and receive
data directly with each other.
28
Connect your device