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Voice over Internet Protocol (VoIP) is a technology used for delivering different kinds of data from a source to a destination using IP (Internet Protocol). The data may be in many forms, including files, voice communication, pictures, fax or multimedia messages. VoIP is most often used for telephone calls, which are almost free of charge.
Data is more secure and faster with private networks, but the costs are much higher. For the purpose of a communication system with very low cost, VoIP was introduced. This technology provides fast and high quality voice communication all over the world.