Difference Between VoIP and Internet Telephony
Let Me Explain You the Basics
Today, we are going to understand the difference between VoIP and Internet Telephony. These two terms are often used as if they mean the same thing, but I will explain you how they are slightly different in usage and scope.
What Is VoIP
VoIP stands for Voice over Internet Protocol.
This is a specific technology that allows you to send voice data over the internet in the form of digital packets.
VoIP handles the technical process behind making voice calls through the internet.
You use VoIP when making calls through apps or devices that convert your voice into data and send it across the internet.
What Is Internet Telephony
Internet Telephony is a broader term that includes VoIP and other communication services over the internet.
It doesn’t just mean voice. It also includes video calls, fax, SMS, and other telephony functions done through the internet.
So when you hear “Internet Telephony,” think of the full telephone service experience using internet technologies.
Now Let Me Show You the Key Differences
| Point | VoIP | Internet Telephony |
|---|---|---|
| Meaning | Technology that enables voice data over IP | General term for telephony services over the internet |
| Scope | Narrow, focuses on voice | Broad, includes voice, video, fax, SMS |
| Usage | Used inside apps and devices to make voice calls | Used to describe the full telephone service via internet |
| Examples | VoIP protocol, SIP, RTP | Internet-based phone systems, softphones, virtual PBX |
| Focus | How voice is transmitted | Complete communication system over internet |
When You Use VoIP
- When you are setting up or using a voice communication feature over the internet
- When you care about the technology behind the call
When You Use Internet Telephony
- When you are describing the overall telephone system working on internet
- When you include voice, video, and other communication services together
So now you can clearly see the difference between VoIP and Internet Telephony. I’ve explained you how VoIP is a part of the larger picture, while Internet Telephony is the full service that may include VoIP as one of its components. This helps you use both terms accurately depending on what you’re referring to.