Motorola 7545MBW User Manual page 279

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.
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 sta-
tus, 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.
Configure Frequency Bands
The network selection can be modified by enabling or disabling GSM and UMTS frequency bands.
IMPORTANT
Care must be taken when disabling bands — the wrong band will
prevent the modem from registering with the network (that is, not
even emergency calls are possible if a mistake is made).
By default all bands supported by the installed WWAN modem are enabled. All bands that are not supported
by the installed modem are greyed-out. While some modems (e.g. Cinterion PH8-P) allow all possible combi-
nations of supported bands to be selected, others do not (e.g. Cinterion MC75i). A warning is displayed if an
unsupported band combination is chosen.
By enabling only bands in use on a given network, the network search time (e.g. after losing the network due to
a coverage gap) is improved. Through the band configuration it is possible to force the modem into GSM-only
or UMTS-only mode. As an example, this is useful if a legacy application needs to use a dial-up connection
and the network supports dial-up connections only on GSM but not on UMTS (as is the case with many Euro-
pean networks).
Enable Automatic Time Update
If this feature is enabled, it allows the system time and time zone to be updated with information received from
the WWAN network. This feature is network-dependent. If the WWAN network supports NITZ ("Network Infor-
mation and Time Zone"), then it can send the current time, time zone, or both to the terminal.
Wireless Wide Area Network (WWAN) Settings G - 11