B&B Electronics SPECTRE Configuration Manual page 33

B&B Electronics, Inc.
A configuration example for checking the PPP connection is shown in Figure 19. The
router will monitor the traffic over the PPP connection. When the router is using SIM card 1, it
will ping address 8.8.8.8 if there is no receive traffic on the PPP connection for 60s. If the router
is using the secondary SIM card, it will ping
the PPP link.
Figure 20 shows an example of how to configure the router to automatically switch to the
backup SIM card when it exceeds the data limit of 800MB in the billing period. It will send out a
warning SMS message when 400MB of data have been transmitted. The billing period begins on
the 18th day of the month.
Example: Configuring the router to switch to offline mode when it detects that it is
roaming. The first attempt to switch back to the default SIM card is made after 60 minutes, the
second after 40 minutes, the third after 50 minutes (40 +10)...
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Fig. 20: Example of GPRS configuration 1
Fig. 21: Example of GPRS configuration 2
Fig. 22: Example of GPRS configuration 3
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SPECTRE Configuration Manual
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