User manual

18: Automatic operator selection
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18 Automatic operator selection
18.1 Introduction to automatic operator selection
This section describes how to configure and operate the Automatic Operator
Selection feature of a Virtual Access router.
When the roaming SIM is connected, the 3G module has the ability to scan
available 3G networks. The router, using mobile and multi-WAN packages, finds
available networks to create and sort interfaces according to their signal
strength. These interfaces are used for failover purposes.
18.2 Configuring automatic operator selection
While the router boots up it checks for 3G networks. Based on available
networks, the router creates network and multi-WAN package failover interfaces.
Details for these interfaces are provided in the mobile package. When you have
created the interfaces, multi-WAN manages the operation of primary
(predefined) and failover (auto created) interfaces.
There are four PMP (Primary Mobile Provider) scenarios:
• PMP + roaming: pre-empt enabled
• PMP + roaming: pre-empt disabled
• No PMP + roaming
• Disable roaming
18.3 Configuring automatic operator selection via the web interface
18.3.1 PMP + roaming: pre-empt enabled
In this scenario, the primary interface is used whenever possible.
Software operations
11. Connect the PMP interface.
12. Wait until the signal level on the PMP interface goes under sig_dbm option value.
13. Disconnect the PMP interface.
14. Connect the first auto-generated interface.
15. Wait until the signal level on the first auto-generated interface goes under the
sig_dbm option in the mobile package, or until the primary interface is available to
connect after it was disconnected in step 3. ifup_retry_sec option value of primary
interface in multi-WAN package.
16. Disconnect auto-generated interface. If the interface was disconnected due to low
signal level then connect the next auto-generated interface and repeat step 5. If the
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© Virtual Access 2015
GW1000 Series User Manual
Issue: 2.4 Page 108 of 255