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outside your home network), using analog connections may help you to establish a
connection.
4. Set the Maximum connection speed. When your Connection type is Normal, only
autobauding, 9600 and 14400 are available. Different, higher connection speeds are
available with different combinations of High speed settings. Higher data rates may cost
more, depending on the network service provider. The speed indicated here is the
maximum speed that will be used. The true data transfer speed depends on congestion
in the Internet, the type of data you are downloading, whether you are running other
applications on the communicator, on the congestion of the mobile phone network and on
your location in the mobile phone network. In poor reception areas, the network may
choose to use a significantly lower transmission speed.
5. Type in the Modem initialisation string if needed, to control the communicator using
modem AT commands. Enter characters specified by your network service provider or
ISP; otherwise, leave this field empty. The modem initialisation string specified here will
override all other data call settings. The initialisation string may be required if the normal
settings are not sufficient for a particularly complex network/IAP configuration.
Tip: If you are unable to connect to the Internet Access Point when you are
roaming in a foreign network, try to select a different operator. If that does not
help, try to use the following settings: Normal, Analog and Autobauding. This is
the basic (and, unfortunately, also the slowest) combination that is supported by
all networks that support GSM data transfers.
Tip: If you want to save money and to only occasionally use high-speed data
calls, create several IAPs with different data call settings, and set Show
connection dialog to Yes in the Internet Access main view in Extras. This way, you
can select a suitable data transfer speed for each task you execute.
Tip: Increasing the maximum transfer speed increases the download speed (data
transfer from the Internet to your communicator). However, the upload speed
(data transfer from the communicator to the Internet) stays the same (9600 or
14400 bits per second) unless you select 28800 as the maximum speed, in which
case the both the upload and download speeds will be 28800 bits per second.
This is usually only important when you send large files from your communicator
(such as mail attachments).
1.2.3 Taking callback into use
Note: Most public ISPs do not support callback. Most common callback users are
companies and other private dial-up systems that require increased security.
This option allows a server to call you back once you have made the initial call, which means
in most countries that a connection is established without your having to pay for the call.
Contact your ISP to find out whether this service is available and to subscribe to this service.
If you are roaming outside your home network or use high-speed data calls, you may still
have to pay for part of the call.