Psion 2739D-7545MBW, Руководство пользователя

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Appendix G: Wireless Wide Area Network (WWAN) Settings
Tools Menu
Psion Omnii Hand-Held Computer User Manual
G-10
G.1.4.3 Network Configuration
In the main Wireless WAN window:
• Tap on the Tools menu, and choose Network .
Enable Automatic Network Select
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 agree-
ment). You may find there are some situations in which you want to override this default behaviour. For ex-
ample, 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 automatic network
select in the Network dialog box. When automatic network selection is disabled, you must select a network
manually.
Show Available Networks
Available networks can also be viewed without changing any settings. Scanning for available 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 identifier (MCC/MNC, Mobile Country Code followed by
the Mobile Network Code) is displayed.
Configure Frequency Bands
The network selection can be modified by enabling or disabling GSM and UMTS frequency bands.
Note: Your home network operator will need to let you know which other networks have roaming
agreements. Even when a network is listed with an ‘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 network found’, ‘GPRS not available’ or ‘GPRS not
allowed’.