I want to know if I use my own gateway VoIP connected to PSTN, and if I am doing too calls using the PC and this Gateway, Will I have some fee by these calls in phone company?
Well, of course you will need a line or more from the phone company to connect to your gateway and I am sure that there will be a monthly charge for that. Then, depending on your area and phone company, they may charge you a per call/per minute fee or a monthly fee.