We research, develop and perform a full variety of technologies for international telephony. One of our recent and we believe - revolutionary telecom project Call2Club based on combination Voice-Over-IP and national "Public Switch Telephone Networks" technologies. It provides free international calls to hundreds of phone networks worldwide. Unlike the standard popular web programs for messaging and calls, (such as Skype, WhatsApp, Viber) Call2Club user can make a free call to a person residing in a place where the Internet's connection is not available. We are providing utterly FREE telephone calls to countries mostly suffered during COVID-19 pandemic.