There will come a time when calling people will become free. Great progress has already been made in that direction by companies like Skype and Fring. These companies use the infrastructure of the world wide web to allow people to call other people for free. You could use your computer to call another Skype-enabled computer for free; or you could buy a Skype phone to call people on the go. With Skype, there could be some additional charges, but most calling is free.
Then there is Fring, a service that could potentially do away with any additional charges like long distance fees. Fring is a software that you can download onto your GPRS enabled mobile phone, anywhere in the world, absolutely for free. The service gives you access to your Skype, gtalk, Yahoo and other chat buddies, all in one interface. Using Fring, you do not have to remain with your computer when you are talking to your friends and family. As long as you have access to mobile internet, you can use Fring to chat with your friends, anytime, anywhere, for free.
What is more important, and what ushers in a new age in communication, is that supposing you had high speed internet on your mobile, and your buddies or contacts all had Fring on their mobiles and high speed internet, you could call them using VoIP, from your mobile. So, this completely does away with the concept of long distance and international calls. You could be anywhere in the world and you could whip out that mobile and call your friends on the opposite side of the globe, for free.
This service is in the developing stage, admittedly, but it will soon make telephony free of cost.