Configuration Examples
9.6
Useful Information on Internet Access
9.6.1 Costs
The OpenCom 510 uses a router function to access the Internet, which means that
it automatically establishes an Internet connection when required and terminates
the connection after a certain period of time if no data are being transmitted.
Unfortunately, programs other than those typically intended to access the Internet
(such as your browser or your e-mail software) may send out data packets which
cause an Internet connection to be established, even if these programs are not
strictly Internet-associated applications.
Examples of such programs are the Microsoft
multimedia programs such as Realplayer
establish an Internet connection for automatic updates (the so-called "phone
home function").
It is therefore highly advisable to limit ISP access by specifying the maximum
monthly connection time under Connection time per month (maximal) in the
NET Configuration: WAN: [Provider] menu on the web console.
9.6.2 Using the Web
A Web browser not only enables you to use the OpenCom 510 Configurator from
every workstation but also to obtain a wealth of information from the Internet.
Simply enter the desired URL in the address field of the browser. Access from a
stand-alone PC via an online service differs from Internet access via the
OpenCom 510 in the following respects:
■
When you request a Web page, dialling in results automatically. There is no
display of dialogues with manual confirmation of dialling in or hanging up.
■
Requesting Web pages is not a connection-orientated service. When the Web
page has been loaded completely, the TCP/IP connection is cleared. If you do
not request further Web pages, the OpenCom 510 automatically releases the
connection to the Internet after a certain, specifiable duration.
■
It is possible to call up Web pages simultaneously from several workstations.
108
Useful Information on Internet Access
TM
TM
XP
operating system, various
TM
and anti-virus applications that may
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