Callback service in the literal sense would mean making of low cost calls to international numbers through a third party. In this system customers are provided with a calling card at a very feasible price rate. The user remains motivated with the excellent features of this calling card. The system functions by means of an access number. It is the service provider that gives the number to the customer. The users are thus connected to VoIP network with these easy calling facilities.

The users of this service can enjoy the offers of low international callback service. The presence of the virtual cards also enable people to avail the high quality callback service that assures excellent voice quality from any country. These calling cards can be brought from any place and thus the connectivity can be established easily. The system actually functions based on an access number that is provided by the service provider to the customers. It simplifies availing of connectivity especially for travelers. The method has eased establishing connectivity for multinational companies as well. International callers can make calls at cheap rates with this service in hand. It is possible for people to make calls from their hotel phone, mobile phones or pay phones.

This method of international callback is based on the principle whereby the user just has to dial a trigger number for activating the call. Once this is done, the service provider then makes a second call back to the dialer. The users are then instructed to dial the destination number. When this is done, the VoIP phone connection is established. The caller can talk to the end user for any length of time. If the person wants to make a second call then he or she just has to press # that give the user access to another number. The second destination number is then required to be dialed. This continues as long as the callers wishe and end with the final ceasing from call making.

This system is actually a web callback service. For availing the service it is mandatory that one has access to internet connection. With the callback one can send SMS and other messages having integrated with Voice Over IP communication system. One also needs a computer for accessing the service. However, nowadays, it is not just restricted to desktop or laptop computers. Mobile or land line phones can also be brought to use for accessing the service. Then there is the facility of speed dialing that enables people to connect easily with others.

The billing procedures in the web callback service is also made simple. Now, one can easily make payments with online assistance. It increases the convenience and users do not have to visit the office of the service provider to clear payment of bills.