Session border controller

A session border controller (SBC) is a special tool that helps people who use the internet and phone. Have you ever talked to someone on the phone using the internet instead of a regular phone line? This is called Voice over Internet Protocol (VoIP). When you use VoIP, your voice is turned into special computer data packets that can travel over the internet.

But sometimes when those data packets are traveling from one person to another, other people may try to listen in or even change what is being said! That's not good, right?

So that's where a session border controller comes in. It is like a special gate that helps protect your voice data as it goes from one person to the other person. It checks to make sure only the right people can hear what is being said, and no one is trying to mess with it.

Additionally, an SBC can also help with problems that come up when two different internet phone systems try to talk to each other. It makes sure that they can talk in a way that both systems understand, like two kids talking in the same language.

So, in short, a session border controller is a special tool that helps keep phone conversations over the internet safe and helps different systems talk to each other properly.