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A Calling Card business is a popular kind of activity in the VoIP sphere. The Calling Card platform allows one to provide subscribers with international or long distance calls via a VoIP network. This business sector is attractive for VoIP newcomers. Nowadays, Internet telecommunications services are highly developed. Lots of applications are available for making calls but due to calling cards, customers can make calls from any phone so it is not necessary to have Internet connection for making calls. That's why the Calling Card business has remained popular so far.
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