Internet Protocol (IP), the packet technology used on the Internet, has proven its ability to efficiently integrate voice traffic into the flow of data on IP networks, enabling voice and data services to be delivered to users from a single multiservice network. Voice over IP supports two-way transmission of voice traffic over a packet-switched IP (Internet protocol) network. This network could be a public carrier network, the Internet, or a private enterprise intranet. The term "Internet telephony" generally refers to Voice over IP services transported over a public Internet backbone, but the terms are often used interchangeably.
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