Hey, everyone. In this video we're going to be talking about common applications and fun facts regarding VoIP. >> Right, so some, the simplest one is the computer to computer VoIP. And you obviously know there's ATA's in and IP's. Not much to talk about, just phones. And for Computer-to-Computer VoIPs there's tons of programs out there. >> Right. >> And some big ones would be like Skype, Teamspeak, Ventrillo, Mumble, etc. >> And one big Computer-to-Computer VoIP that we forgot to mention is the Dragonboard itself can do Computer-to-Computer VoIP. >> Of course it's an IP phone but it can talk to other phones. >> Mm-hm. >> Other Dragonboards. Computers. >> So, what Randy means by that is on your DragonBoard you can have two different operating systems. You can have the Android operating system or the Ubuntu operating system. When you have the Android operating system on the DragonBoard it basically functions as an IP phone. However when you load the Ubuntu operating system on the DragonBoard, you can do computer computer VoIP calls using the DragonBoard. >> So, as long as you have the right software it'll be fine. >> Right, and so as Randy was mentioning earlier about Skype. Let's take a close look at exactly how Skype works because it's quite a interesting piece of software there. So, Skype works off of a peer-to-peer network, it's a P2P. So, if you haven't heard that before basically what happens is, let's say we're in a suburb somewhere and there's a house that's making Skype calls. Five houses down, there's another person who has Skype loaded on their computer and then ten miles down, someone else has a Skype. What happens is, if you're making a call usually on the internet, when you're making a call on the internet, it goes through the internet and goes down to lines and goes to wherever you need to go, it doesn't go to separate nodes in between. But what happens when you're using VOIP is when you're making a call, it's gonna search for the closest computer around you that's also using Skype. And it's gonna go to that computer. Transmit the data through their computer to the next one, to the next one, and to the next one. So, let's say there's 100 houses between you and in the person you're trying to call. And all these 100 houses have some type of Skype on their computer and they're using it. And what's gonna happen is your data that you're trying to call or that you're trying to have a video call with, that data's gonna descend through 100 houses. And I know that sounds very complicated or time consuming. But that actually makes the process much faster. Because you don't have to send the data over a very long range you can just do short range transmissions. So, that's basically what a peer to peer networking is. Basically a peer to a peer and it's gonna go down the line that way. And basically what a peer to peer network is, is that it's decentralized. There's no 1 central hub that transmits the data everywhere. Every single person that's using it serves as their own little node, and they all submit the data. It works in a community fashion. So, it's decentralized, it's distributed and one interesting thing about Skype, it's a very interesting algorithm that Skype developed, is that when you're making a Skype call, say you're making it internationally, there might be a million people using Skype in between, but what Skype does is it locates which computers have the best Internet. So instead of trying to go through computers that have kind of bad Internet, it only locates the one that has really good Internet. And sense the information through them. So, it makes for a much faster call. And basically, Skype is a very amazing piece of software that everyone's using nowadays. >> All right, so let's check out some random facts or some cool facts we found. So first, we have here is, the first VoIP call was made in 1974 on the ARPANET. >> Mm-hm. >> Which stands for Advanced Projects Research Agency Network. >> Precursor to [CROSSTALK] >> Precursor to today's internet. >> Yeah. And then next we have the gaming VOIP used by criminals. This is a very interesting fact, I thought, cuz VOIP for gaming is huge, right? And criminals have tapped into this market and are suspected of conducting criminal activities under the disguise of VoIP used for gaming. So oftentimes, in todays gaming world there's live chat happening between player to play and so if one person is calling another person, that phone call could be tapped and most likely will be tapped if those people are suspected. However, in the gaming world there's millions Millions and billions of people playing that game. So, what happens is, when you're talking to someone on the chat it's much more difficult to track who's chatting what to some other player when there's a billion players all on the same interface there. >> And then finally, anyone can start their own VoIP servers. That means, you, me. So long as you're an experienced coder, as long as you know how VoIP works. And in this course we plan to help you learn how to use VoIP so you can set it up on your own using the dragon board. Right? So- >> Stay tuned for that. >> Yeah, what are some cool things we can do? >> Oh, let's see, one cool thing that I thought >> Let's say you're a new parent, and you have a child. And you wanna monitor the child, make sure it's being safe when you're at work or something. >> Right. >> You can have like a little baby monitor, or maybe a video cam that's always keeping an eye on the child. >> Huh. >> And you can use that, and you can see a live feed on your cell >> Phone and that can be done off of VOIP. >> Yeah that'd be pretty cool. Be able to program it. You can say maybe some kind of voice activate through your phone or something like that. >> Yeah. >> Maybe you have a sensor in your house. Someone breaks in and that instantly sends you a phone call. Right. >> Pretty neat. That'll be pretty helpful. >> So, the possibilities with what you can do with VOIP are quite endless and we'll try to open up to some of these ideas later on in this course and hope you stay tuned.