Hello Winnie,
i use the modem EC25.
I confirm that I first established a PPP connection and then I used the windows 10 api to send the AT commands.
From the log I only see the outgoing requests from the PC to the phone, but never uplink traffic.
I can’t open web pages or ping.
if I see the flowchart of the file you sent me, it hangs in the data transmission part.
Why do i have to dial this number ATD * 99 # to call? shouldn’t I also enter the pdp context that I created and therefore ATD* 99** *1# ?
because during the configuration of the modem in the AT commands I had entered the command
AT+CGDCONT = 1,“IP”,“ibox.tim.it”