Imagine your business has a phone system, just like the one you have at home, but bigger. This phone system needs a connection to the outside world to make and receive calls. In the past, this was done with physical phone lines like the ones you might have at home.

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SIP trunking is like a modern, digital version of those old phone lines. Instead of physical wires, it uses the internet to connect your business phone system to the phone network. It's kind of like a virtual phone line.

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With SIP trunking, you can make calls, receive calls, and even use extra features like video calls, all through your internet connection. It's more flexible and can handle a lot of calls at once, making it great for businesses. Plus, it can often be more cost-effective because you don't need to maintain lots of physical phone lines.

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So, in simple terms, SIP trunking is a way for businesses to connect their phone systems to the outside world using the internet instead of old-fashioned phone lines.