A study of VOIP technology getting preference over calling cards

An insight to VOIP technology and its advantages In the recent past, VOIP has taken over and replaced all tradition ways of communication. It has managed to bring in wider audience for the only reason being "easy & cost effective". Today, VOIP service providers have come up with apps which can be installed and used to make calls in Mobile phones and not just desktops/laptops. For sure, VOIP is here to stay for some more time until there is any new technology invented to replace.