How can we make free calls? As we have already mentioned, the operation of VoIP telephony is based on the use of an internet connection, which transfers established connections. If the transfer takes place within one application (the example of Skype mentioned above ), the connections made are not charged with any costs. It is no wonder that developers willingly created various messengers based on VoIP networks. The created messenger can easily be spread to a specific group of people, and then everyone will be able to make free calls over the internet. An equally effective, though somewhat prosaic way is to use Skype itself . The application has been constructed in a very user-friendly way, so nothing stands in the way to create your own network of contacts on its basis. It is worth adding that the program itself is extremely popular all over the world, which additionally promotes contact via VoIP. VoIP gateway, i.e. an alternative to the telephone Of