Matrix SIMADO GFX11 System Manual
27
Mobile Network Selection
At each power ON, the Mobile Port will automatically locate and register with the network that supports the SIM
Card installed in it.
However, if the Mobile Port fails to register, it will restart the process of network selection on the expiry of the
Network Registration Retry Timer
4
.
If SIMADO GFX11 is located in an area where more than one Network Operator is available, it is possible that the
SIM Card may register with another available network and result in 'Roaming' charges. To avoid this, you must
disable Automatic Network Selection and configure Manual Network Selection.
When you enable manual network selection, you must configure the
Network Operator Priority Table
. This table
requires you to configure the Network Operator Codes (MCC-MNC)
5
in order of priority for a Mobile Port. So,
whenever the SIM Card tries to register with the network manually, the Mobile Port will send a query to the available
GSM Network Operators. The network operators will respond to the query with their Network Operator Codes. The
Mobile Port will then match the Network Operator Codes it receives with those configured in the Network Operator
Priority Table and select the Network Operator that matches in order of priority. If the Mobile Port fails to register, it
will restart the process of network selection on the expiry of the
Network Registration Retry Timer.
If no match is found, the Mobile Port (SIM) will not get registered with any of the available network operators and no
calls can be made or received on this port.
•
Enter SE Mode.
•
To configure network selection mode for the Mobile Port, dial:
331-Network Selection Mode-#*
Where,
Network Selection Mode is
1 for Automatic
2 for Manual
Default:
Automatic
•
To configure network operator's code in the priority table, dial:
332-Priority-Code-#*
Where,
Priority is from 1 to 3.
Code is MCC-MNC of the Network Operator. The MCC-MNC code must not exceed 6 digits.
Default:
00000
4. The Network Registration Retry Timer defines the time for which the Mobile Port, which has failed to register with the network, should
wait before attempting to re-register with the network. Network registration retry timer is 2 minutes and is non-programmable.
5. The Network Operator Code comprises of the Mobile Country Code (MCC) appended by the Mobile Network Code (MNC). The MCC
is usually a 3-digit code that identifies a country. For example the MCC assigned to India is 404 and it applies to all network operators
in the country. MCC for other countries are: USA-310; Canada-302; Australia: 505; Italy: 222.
The MNC is usually a 2/3-digit code. The MCC-MNC combination uniquely identifies the home network of the mobile terminal or the
mobile user. For example, Airtel, a GSM network operator in India, has different MNC assigned to its networks in various states. The
MNC for Airtel in the state of Maharashtra is 90, while the same for the state of Gujarat is 98.
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