If you’re evaluating new business phone systems, you may have come across the terms VoIP and SIP or SIP trunking. Although SIP and VoIP are often used interchangeably, they are not the same thing. At America’s Phone Guys, we aim to help you understand the terms used in the telecommunications industry so keep reading to learn the differences between VoIP and SIP.

VoIP Defined

VoIP stands for Voice over Internet Protocol. It’s a technology that converts your voice into a digital signal, so you can make calls from a VoIP phone or computer. Simply put, it’s a way to make calls over the Internet.

SIP Defined

SIP stands for Session Initiation Protocol which is a protocol that handles the exchange of transmission. It enables voice calls, video chats, meetings, instant messages, and other types of unified communications. Therefore, SIP is a specific protocol that enables VoIP.

Are SIP and VoIP the Same?

No. VoIP is essentially a phone service delivered through the Internet, while SIP helps manage communication sessions using various aspects of unified communications. Simply put, SIP is used to support and scale VoIP. Because they are two different technologies, VoIP vs. SIP isn’t necessarily a comparison.

Let’s look at the differences between VoIP and SIP in chart form:

VoIP	SIP
Covers voice calls and messages	Covers all types of media
Internet-compatible	Internet-compatible
Relies on the devices that provide Internet	Not dependent on other devices
Layer 3 network protocol	Protocol of application layer

VoIP and SIP Explained

SIP and VoIP work together to make and receive phone calls over the Internet, but they are entirely different technologies. For many modern VoIP systems, both VoIP and SIP support are necessary. If you’re looking to improve your business communication and help reduce costs, moving to VoIP with SIP implementation is recommended. SIP enhances basic VoIP capabilities by allowing you to exchange files, videos, and messages rather than just voice alone.

We understand it’s not always easy determining which business phone system may be right for you. If you have any questions or want to learn more, feel free to contact us. We will happily answer any questions you may have and help find the best solution for your business.