Good morning / afternoon / evening, I have a PBX 3CX, and I need to connect via PSTN, but not how to configure it. My phone is a card that came installed on your computer, and what I miss is to join a telephone cable from the PC to the rosette. But not how to make 3cx detect it. From the Windows marker I can make calls, but I want to connect it to the PBX. Thank you!