What is VoIP?

An SMB Perspective
“VoIP” is one of the most commonly used and widely misunderstood acronyms in the IT industry. VoIP stands for “Voice over Internet Protocol”. Self-explanatory, right? Unless you are an IT geek, maybe not so much. So what is VoIP? And how do you know if you have it or need it?
Fundamentally, VoIP is a technology that allows businesses (and consumers) to access the public voice network (we’ll refer to it as the Public Switched Telephone Network or “PSTN”) without having a traditional analog or digital voice line (more on that in a moment). Instead of using the voice network, VoIP uses data networks (like the Internet) to “carry” voice traffic, which creates opportunities for cost savings and efficiency.
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