Communication is considered as the most important tool to interact with other people. With an advent of internet in telecom industry, things have changed for something good. Advancement in the telephony domain has helped people to make call in different corners of the world with ease and sophistication. The advanced technology allows the users to make long-distance or international calls without worrying about high rate charged by the service provider. As a matter of fact, in the modern age calling is ruled by the internet which is cost efficient. Therefore, it can be said that internet is the most essential and revolutionised communication technology.

With the help of internet connection, the users can easily make free calls using this service. This type of telephone service is considered as the best choice for people who make frequent international or long distance calls. Apart from this, there are many internet telephone service providers around the world who are ready to deliver or offer free internet calls. As a matter of fact, the service providers offer cheaper calling rates than the pre-existing telephone calls. Free telephony services offered by the companies include unlimited PC to phone calls and so on.

Importantly, to make free internet calls, one needs to possess a high speed internet connection, multimedia computer, a sound card, speakers as well as microphone. Moreover, a person requires some special software which is being used for setting up a high-speed internet phone connection. It works over a computer, the users get the facility to use external speakers and microphone while accessing a call over the internet. Therefore, it can be said that free calling service is very helpful for the people who have priority of saving money over traditional telephone system. Apart from calling, some websites allow the person to share images and videos. Such amazing services are the outcome of most advanced and sophisticated technology which enables people to realise their dream of making free calls.

The DSL or broadband connection is a broadband enabled phone adopter which can be plugged directly into a router or modem. As a matter of fact, the user will be able to connect existing phone with adopter and then he can enjoy making free internet calls from his number. Importantly, calls on the internet are not dependent on the distance, as the service providers charges a flat fixed rate for the usage of bandwidth. But, sender and receiver require compatible software for making a call over the internet. In contrast with regular telephone service providers, internet calls provide the basic telephone services with additional features including call waiting, call forwarding, voice mail and three-way calling. Apart from this, the users get all the basic features of a normal telephone and lots of additional features by paying a less amount of money than the regular telephone. The calls over internet reduce the costs of communications as well as improves the voice quality, as it is based on the concept of packet switching technique. As far as the performance levels are concerned in the internet calls, the users must consider significant determining factors such as PDD (Post Dial Duration) period is on the lower side while ASR (Average Success Rate) should be on the higher side.

The main concept behind making free calls is VoIP technology. By using this IP technology, the users will be able to make calls while accessing the information on the internet. The advanced technology saves the cost of telephone calls, for this reason many people across the world are now switching over to calling through IP telephony. Making free calls through internet has become a talk of the town especially among college students and other age group.