In high speed channels like HSDPA, you can reduce the
Keepalive Period Unreachable
parameter without trigger-
ing false tunnel drops due to peaks of traffic. However, remember the device can dynamically change the type of
cellular network it is connected to at any point.
•
Parameters for carrier changeover
In a WWAN technology scenario with dual SIM, the switch process from one carrier to another requires a period of
time that you must bear in mind when configuring the supervision criteria. Below, we have laid out some guidelines
to better configure the parameters:
Registration Criteria Interval:
A too low value will mean the device does not have enough time to connect to either
of the two carriers, triggering continuous switching. To avoid this, we suggest you assign a time of more than 2
minutes.
Recovery Interval:
This value must be greater than that indicated in the previous parameter so that the device has
enough time to establish connection with the main carrier before changing over.
Fig. 86:
Wireless WAN –SIM Changeover Settings.
3 Configuration Recommendations
Teldat S.A.
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Regesta-PLC