Voice over Internet Protocol (VoIP). VoIP revolutionized communication, as it brought the idea of making calls over the internet, which eliminated the use of expensive traditional phone lines, and thus bridged the distance between the two for a very low amount of money. Moreover, alongside these new developments, we can mention Skype and the first VoIP-based telephony systems as platf... https://www.capanicus.com/voip-telephony-software-app-development