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What's the 3G WWAN package upload?
This KB introduces what is WWAN Package and how to upgrade 3G dongle support package for support more 3G dongle.
But first we need to know how USB dongle work on the RG device. Basically the USB dongle will have two interfaces, one is for storage mode; the others for modem mode. When USB dongle plug in the RG device it will check the storage mode’s VID and PID, then device will match its own support content have this VID and PID or not. If VID and PID are matched, the device will send the message content to USB dongle to ask it switch to the modem mode, in this moment the USB dongle’s VID and PID will also switch to modem mode.
Figure 3.1 mode switch from storage to modem
What’s WWAN (Wireless Wide Area Network Package). Here we collect all information required (VID, PID, message content) for switching mode process of USB dongle into one package. It mean if the USB dongle’s VID and PID are in the package then RG device will ask it switch from storage mode to the modem mode.
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