How to open the Internet connection (dialup) on PC using the Qt functions for 3G modem?

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I want to write an desktop application - a communicator (dialer) 3G modem connection for accessing the Internet applications on a personal computer, measures traffic, monitors connection, its speed.
Management AT commands for me - it is clear.
My question: How to open the Internet connection on PC using the Qt functions to open the transparent channel for all desktop applications?

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What do you think about RAS API for Qt5?

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Then another question: in Qt (under minGW, not MVS20XX) of the latest versions, is there a tool (functions \ lib) to work with msdn RASDIAL to open the connection as in the example below?
3G Modem Internet Dialer

[SGaist]

Hi,

So basically you have a serial port to connect to your modem and send AT commands ? So QSerialPort should do the job.

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@SGaist This is understandable for me. I'm asking: how to make a remote connection (RAS) on a PC? Specifically: How to connect the rasapi32.lib library to Qt5?

[SGaist]

Usually something like LIBS += -lrasapi32