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VoIP and the Smart Home

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Internet of Things: Communication Technologies

University of California San Diego

4.4 (158 ratings) | 18K Students Enrolled

Course 4 of 6 in the Internet of Things Specialization

Have you wondered how “Things” talk to each other and the cloud? Do you understand the alternatives for conveying latency-sensitive real time data versus reliable signaling data? Building on the skills from the Sensing and Actuation course, we will explore protocols to exchange information between processors. In this course, you will learn how VoIP systems like Skype work and implement your own app for voice calls and text messages. You will start by using the Session Initiation Protocol (SIP) for session management. Next, you will learn how voice codecs such as Adaptive Multi Rate (AMR) are used in 3G networks and use them for voice traffic in your app. Learning Goals: After completing this course, you will be able to: 1. Implement session initiation, management and termination on your DragonBoard™ 410c using SIP. 2. Discover other users and exchange device capabilities. 3. Compare and contrast narrowband and wideband codecs and experience the voice quality differences between them. 4. Implement and demonstrate VoIP calls using the DragonBoard 410c.

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MS

Nov 26, 2016

this course is very useful and i enjoyed for listen it

HI

Jun 24, 2018

That course was really helpful and fruitful for me.

From the lesson

Make your own VoIP application

The main part of this module will focus on you making your very own VoIP application on the Android operating system. In order to do this, you might have to brush up on some of the materials in Course 2. You will be required to use Android Studio to push the application onto your board. You will need to know how to use Git, adb and possibly fastboot in order to accomplish this. We will provide you with the code for your application, but remember, the code we are giving you is only a template that can be used to build a bigger and better application with a wide variety of functions. Once we have built your application and pushed it to your board, we will sit together and brainstorm everything we have seen in the last few courses and take a look at what we are now capable of building in the IoT market.

Introduction to Lesson 31:27

VoIP and the Smart Home6:57

VoIP and the Smart Office3:54

Mobile VoIP and EoIP3:42

A look back at Lesson 31:35

Taught By

Ganz Chockalingam
Principal Engineer
Harinath Garudadri
Associate Research Scientist

Transcript

So VoIP and the smart home, right.

I would imagine that, at least most,

most people's homes have some smart aspect to it.

>> Right. >> Right.

So the idea of this video is to kind of jog your,

jog your mind, jog your imagination to think about things that

don't exist yet or things that already exist that you can apply the knowledge you

have acquired about throughout these last courses in specialization and

possibly expand on everything that you know right now.

Right. So I wanna talk to you about, or

ask some questions to you make you think a little bit about your home.

You know, like what VoIP applications or

internet of things applications do you have in your house right now?

So I know that, I mean, if I think about my house, I have the Amazon TV.

And they have a little remote control that you can talk to, tell it to do stuff.

So it's taking my voice, it's analyzing the data.

>> Mm-hm. >> And it's performing tasks, right?

Perfect example of VoIP.

Now, what could you add to that?

What could you add to your house?

What could you add to an average object in your house that's not connected?

>> Yeah.

You might think it's sort of hard to figure out what it is, but

there's there's a billion.

There's probably like, you can make everything in your house smart, right?

It's your home.

>> Yeah, and I mean, there are certain limitations, but

I mean as technology advances, there are so many things that you

can start adding technology to, to have it connect to everything else.

Now, see that little doorbell up on the slide, it's just a basic

old school doorbell, hit the button and it rings in your house, right?

Well there's a company out there, right over here called Ring.

You can kinda see this new-age doorbell, it has a little camera on there.

But even the most basic, mundane object of your house,

like the doorbell, can be made to create a more safe environment,

a more interactive environment, and an overall more efficient environment for you

living there and for the people who are trying to get in touch with you, right?

S.

Now, you're not home.

And someone comes to your house.

Just think it, like let's think a good person comes to your house.

Rings the bell, looking for you, it's a friend.

Well, this doorbell pings your cell phone,

the camera activates, the microphone activates, and all of a sudden you have

an open video VoIP call with the person that´s standing at your door.

>> It´s pretty sweet.

>> From your cell phone, you´re somewhere else in the world,

who knows where you are.

But, you're talking to someone at your front door.

Sorry, you know I'm in Australia right now.

>> Or I'm shopping.

You gotta- >> [LAUGH] I'm shopping, yeah.

>> You gotta wait for a little bit.

>> That being said, that's a good person.

What if a bad person comes to your house and they're just scoping your house

seeing if anyone's home because they wanna steal your Christmas presents, but no.

Because they ring your doorbell to see if someone's home, and you answer it, and

they're like oh shoot, okay, well I don't know you at the door.

But, you don't know me either, so it's kind of an awkward confrontation,

you've saved your Christmas, Christmas presents.

>> Yep, right.

>> All right.

So that's just a simple example of how you can turn a basic object in your house,

or even right outside your house into something.

>> We have more examples, don't we?

>> Very connected, yes.

I don't know if any of you have any pets, but I have two cats.

So I thought this was really interesting and

I'm actually trying to build one myself.

I've seen a friend of mine do something similar, very interactive.

But what if you could talk to your dog or cat from work?

Right, so, using the DragonBoard 410c, you could create something similar to this.

This is obviously a device that you can buy somewhere.

You can see the pictures up there.

That already comes already pre-programmed, but, where's the fun in that?

You wanna build your own internet of things.

>> Like why do we have this, do it yourself?

Kind of thing.

>> Do it yourself.

So you get a camera, you get your VoIP applications set up,

and you set it up in your house.

And look at that, you can have your very own application from your work.

Call in from your phone to your Dragonboard at home.

And talk to your dog, you know?

>> [LAUGH] >> Put a little monitor there.

>> Or maybe not just your dog.

Maybe you have a baby at home.

You can check up on him just in case.

>> You leave the baby at home?

[LAUGH] >> I'm not a parent, so [LAUGH]

>> Yeah, or a baby, I guess.

>> Or maybe >> [LAUGH]

>> Maybe the babysitter at home and

you wanna check up on the babysitter. >> There you go.

That sounds better.

So you're checking up on the babysitter.

>> [LAUGH]

>> There's, again, lots of applications.

I thought that this particular one was really cool so a little story.

During a Machine Intelligence Class that I took here,

in short of machine intelligence, someone in the class actually developed a really

cool application using a microcontroller, a system on chip similar to this.

Not as powerful even.

But what he could do is he could use his computer, establish a connection,

a VoIP connection or, just a, I wanna call it EoIP,

everything over internet protocol connection.

And what would happen,

is he was able to control a laser pointer, okay.

So he would have a video camera that would pop up.

All of a sudden, his dog would run into the room, because he would know

that the camera started moving on these stepper motors, right.

You've learned how to program.

He could move the camera around,

he could control a laser pointer, he could even release dog treats.

He had a button that he could push that would drop a dog treat and

he could watch his dog.

He could talk to his dog.

He could push a button and then project sound out through a speaker using

one of the headers on the board or even the USB.

So, the- >> Pretty sweet.

>> Options are endless.

>> Pretty awesome.

>> Yeah.

Anyways, that's pretty much ways to make your home smarter, right.

These are just things that exist now.

You can expand on these ideas, make them your own.

You could create them yourself, or you could think of something that's not out

there yet, and make millions of dollars.

>> And remember that everything could become smarter.

You'd think, remember the doorbell, or the, yeah the door.

>> The doorbell.

>> Doorbell?

>> Yeah, ring.

>> I said it later.

[LAUGH] >> [LAUGH]

>> The ring, yeah the ring.

Maybe you wouldn't have thought of that, but these guys did.

They're making money off of it.

It's pretty sweet.

>> Yeah, so we look forward to hearing your ideas.

Get thinking, walk around your house and find something that's not smart yet, and

see if you can make it smart.

Use some sensors, or some motors, and do something fun.

But yeah, anyways, we'll see you in the next video.

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