2-32 Services and Feature Description
6866588D21-D Chapter 2 - MTP850 Ex/MTP810 Ex Product Information Manual March 2009
The user is given an option to limit registration to the home network only, or to a selected network
only, and to ignore the other allowed networks. This is described below.
10.2.2 Home-Only Mode
In Home Only mode the terminal will only recognize the first system in the Allowed list. As a result,
the terminal will only register on its home network, even if a foreign network is in range and is found
first.
10.2.3 Selected Network Mode
In Selected Network mode the terminal will only recognize the system in the Allowed list that has
been selected by the user. As a result, the terminal will only register on this selected network, even
if a foreign network is in range and is found first.
10.2.4 Switching Between Network Modes
The user is given the ability via the MMI to switch between Home Only mode, and Selected Network
mode. If the terminal chooses Selected Network mode, the user will be shown the list of allowed
networks from which to choose from.
If the terminal is in a foreign network and the user switches chooses a network that is different from
the current network, the terminal will force initial cell selection to find a cell that belongs to the Home
or the selected network.
10.2.5 Services
The terminal will operate in all networks as it does in its home network. All calls will be made using
SSI addresses, and it is the SwMI responsibility to reject calls for subscribers or groups that cannot
be reached in the local system.
Note: It is assumed that telephone numbers with the country code of the local country will be
understood by the telephony gateway and dialed to the local number without the country code
(for example: if the user dials the number +44-1256-48-4566 in the UK, it will be treated as if
the user dialed 01256-48-4566.)
10.2.6 MMI Operation
The user can change the network mode via the menu system. A top level menu item called ‘Net
Select’ is provided which when selected will give the user a choice between ‘Home Only’, or
‘Selected Network’. When the user chooses a new mode, if initial cell selection is needed (as
described above in 10.2.4 ) the terminal will leave the current cell and begin scanning from the
beginning of its frequency lists.
In the selected network option, the user is shown a list of network names where each network name
corresponds to one of the MNIs in the list. The network names are provisioned in the terminal as
part of provisioning of the MNI list.
The network alias or MNI of the current network is displayed on the first line of the idle display.
10.3 Registration
Note: Security aspects of registration is covered in Paragraph 12 "Security Services".
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