PDA User Manual

Appendix B: Wireless Wide Area Network (WWAN)
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Ikôn Rugged PDA (Windows CE 5.0) User Manual B-13
after suspend or modem removal). The stored PIN is also automatically entered in the
Current PIN text box whenever the Security Configuration dialog box is called up.
If unauthorized access to the device is a concern, the Require PIN on resume checkbox
should be checked. In this case, the PIN is not stored; whenever a PIN is required, you will
be prompted to enter an appropriate value.
B.1.4.3 Network Configuration
In the main Wireless WAN window:
• Tap on the Tools menu, and choose Network.
By default the GSM radio modem automatically chooses from the available and allowed
networks (allowed networks are the home network and all other networks with which the
home network has a roaming agreement). You may find there are some situations in which
you want to override this default behaviour. For example, you may want to disable roaming
if you find yourself in a border area where the home network is not available but a foreign
roaming partner is available. Abroad, you may find that an available network does not have
GPRS roaming agreements. In this case, you’ll need to manually select the network which
you know to support GPRS roaming.
Automatic network selection is enabled or disabled by checking or unchecking Enable auto-
matic network select in the Network dialog box. When automatic network selection is
disabled, you must select a network manually.
Available networks can also be viewed without changing any settings. Scanning for avail-
able networks is a lengthy operation—a progress bar is shown while the scan is active. For
every network that is found, the network name, country, status and numeric network identi-
fier (MCC/MNC, Mobile Country Code followed by the Mobile Network Code)
is displayed.