VOIP

Happy Friday Everyone !!!

Can someone please tell me how the VOIP software works ??? I have visited various sites that offer VOIP but with adapters. However, there is something called the “soft phone” which is a software and works as a PC to a phone dialer – meaning PC to landline. How are these softwares designed ??? And if it is so easy as the sites claim, I am wondering why we would pay for adapters and monthly charges – we could just download the software or design it and use it free !!! Seems to good to be true. Does anyone know about the software design ???

Curious in Canada – Diva.