Nokia 9290 User Manual page 173

Note: The speeds above are the maximum speed at which your connection will
operate. During the connection, the operating speed may be less, depending
on network conditions.
Modem initialization - Controls your communicator using modem AT commands.
If required, enter characters specified by your GSM system service provider or ISP.
Callback page
Use callback - This option allows a server to call you back once you have made
the initial call, so you have a connection without paying for the call. Contact your
Internet service provider to subscribe to this service. The options are Yes/No.
Note: Charges may apply for certain types of received calls, such as roaming
and high speed data calls. Contact your GSM service provider for more
information.
Note: If you are not using HSCSD, the communicator expects the callback call
to use the same data call settings that were used in the callback-
requesting call. The system must support that type of call in both
directions, to and from the communicator.
Callback type - The options are Use server number/Use server number (IETF)/Use
number below. Ask your Internet service provider for the correct setting to use.
The setting depends on the service provider's configuration.
Callback number - Type in your communicator's data phone number which the
dial back server uses. Usually, this number is the data call phone number of your
communicator.
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