
Appendix B: Wireless Wide Area Network (WWAN)
Tools Menu
B-12 WORKABOUT PRO Hand-Held Computer With Windows CE 5.0 User Manual
‘Available’ status, it does not necessarily follow that it can be used or that
the roaming agreement covers GPRS.
A status of ‘Forbidden’ indicates that the network cannot be used. If you
choose a network that is not covered by a roaming agreement, the status in
the main WWAN dialog box changes to ‘Emergency calls only’, ‘No net-
work found’, ‘GPRS not available’ or ‘GPRS not allowed’.
Driver Mode Configuration
By default, the Wireless WAN driver is enabled (the Enable driver checkbox is
checked). The driver must be disabled in order to use the modem for anything other
than GPRS (e.g. dial-up data, fax, or in order to manually submit AT commands to
the modem for development, testing, approvals, etc.). If the Enable driver checkbox
is not checked, the driver is shut down as soon as the OK button in the Driver Mode
dialog box is chosen.
If, on the other hand, the Wireless WAN driver is not running and the Enable driver
checkbox is checked, the Wireless WAN driver is started as soon the Driver Mode
dialog box is closed using the OK button.
Note: When the driver is not running, no network status or signal strength can
be displayed.
Since all currently supported GSM modems are automatically detected, the Enable
automatic port detection checkbox should always be checked. If this checkbox is
not checked, a serial port can be selected manually. This experimental feature allows
the driver to be used with an internal GSM modem that was not recognized by the
automatic detection or an external GSM modem connected to a serial port of the
computer through USB or through Bluetooth. An external modem connected to a
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