Introduction
12
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Ad hoc
In the ad hoc operating mode, wireless stations send and receive data directly with
each other; no access point is required. Simply insert the radio cards into the
stations, make the necessary configurations, and start communicating. Ad hoc
networking is easy to set up, but communication is limited to stations that are
within range. As long as the stations are within range, you can, for example, share
and exchange files.
See “Setting up and joining ad hoc networks” on page 22 for how to set up an ad
hoc network.
SIM services
SIM services refers to a service which enables you to access the Internet via your
service provider’s or network operator’s own public network. Your service provider
may, for example, offer you the possibility to check data from your company
intranet, send and receive e-mail, and save documents. SIM services are usually
available in public places such as hotels, airports, railway stations, business
centres, and corporate buildings.
Note: Before you can take advantage of the SIM services, you must subscribe
to these services from your service provider or network operator and obtain
instructions for use.
A SIM card is used as a means for user identification: the data stored on the SIM
card is read, and if valid, you are allowed to connect to the Internet and intranets.
The SIM card is provided by the service provider or network operator.
Accounting data, such as used access time and/or transferred data, is passed from
the network on to the service provider for billing purposes. Accounting begins
when the wireless station is authenticated and ends when the wireless station
logs off.
Note: The actual invoice for services from your service provider may vary,
depending upon network features, rounding-off for billing, taxes and
so forth.
Figure 2 - Ad hoc network