I love how the end of the transmission just seems to be a collective scream of celebration from both computers😂

"Dang it, who's using the phone!"

So it's a really odd sounding conversation between machines? Calling modem: Hey, just wanted to call you about the internet. Receiving modem: Yeah, sure. Calling modem: Cool. Receiving modem: Want a modulation method? Calling modem: I accept. So which standard should I use? Receiving modem: Here what you've got: *insert standard*. Calling modem: OK. Receiving modem: Man do I HATE echo suppressors! Calling modem: Yeah, me too! A lot! Like so much! I despise them! So very much! THEY SUCK! (This is it playing 6 times) Anyway, these are my standards and PTSN *insert both here*. Receiving modem: My standards and PTSN are... I say, mine are... I REPEAT, mine are... *insert here*. Calling modem: You like this frequency? Receiving modem: You like this one? Calling modem: How's this one? Receiving modem: OK, so we've got *insert bit rate here* and *insert modulation rate here*. So in 3... 2...1... we sync our minds! Calling modem: Yeah, ok... 3...2...1... Both modems: Max phone line speed achieved! We did it! We are online! We are one mind!

the 1st time I ever heard this sound i was super terrified

I didn't grow up with this and I am really amazed at how much is behind these sounds. I think, as a computer nerd, I really missed out on something, as this is basically communication between two devices turned into sounds, which these days aren't heard anymore

it's not binary it's the depths of hell sound

I remember when I was really really little, and my dad would go online every night for his fishing club website. I had no clue what that sound was, but I was fascinated by it. For seeming like such a primitive thing right now, its actually pretty amazing how complicated that sound really is.

YO! That was way more interesting than I thought it would be!

I accidentally called a modem today and my phone's volume was all the way up so you could imagine the pain my ears were experiencing

Was born in 1999 and never had dial up so it was always a bit mythical to me, very interesting to learn that these sounds actually mean something

When I was younger, I used to be terrified of the sound because I thought my computer was about to explode

6:56 "This is your data. This is what you came to the internet for whether it be text... or text" I LOL'd. Excellent explanation. That sound brings back so many memories, especially of anxious moments waiting for the final confirmation that a stable connection had been established and my queued email would now be sent. It only occurred to me when you explained what a dial-tone is that many of the latest generation would have no idea what that is.

Yall being scared of the modem as a kid made me remember that when there was a blackout our modem would dial up automatically the moment the power came back. That shit was scary because you never expected it

This modulation technique in its original state is still being used today by military, police, aircraft, marine to send and receive small bits of important or critical data over analog FM/AM radio sometimes on distances over thousands miles like in the middle of ocean. I am HAM/SDR radio hobbyist and I can hear it on both AM and narrow band FM commonly on police and aircraft frequencies. They also use morse code time to time which is funny, presumably when there's not enough bandwidth or signal is weak.

You could have bullshitted this whole video and i wouldn't know. Thats how much i know about this stuff lol. Great video!

Ok, that's oddly really cute how they're basically just negotiating and agreeing on how they should internet.

After 23 years FINALLY someone explained the greatest mystery sound of my childhood! Thank you so much!

This is actually v cool. It's pretty cool to see how we struggled before, and how today's technology makes things much easier and accessible

The Dialup sound isnt Infamous, It's nostalgic.

I used to be able to know whether or not my internet connection would be successful based on how the dial-up sounded from beginning to end....now this has confirmed my suspicions that those sounds and patterns were actually meaningful.

I remember when I was younger I usted to get really sacred of the dial up sound. I muted the speakers because I sometimes didn’t want to hear it. This one time I decided to connect on a dark, rainy afternoon and the speakers were on, gosh I was soo scared I almost died lol

*R.I.P headphone users. Rest in spaghetti never forgetti.*

But why could we hear the sounds? Why did they have to be audible?

Man I remember the old times when I was on the internet and my mom had to use the phone to call someone so I had to get offline 😑

I know some of you have been waiting for me to post a new video, since my audience pretty much octupled at this point. The problem is I was a dumbass and spilled water all over my laptop. It's gonna cost about $500 to fix, so it's best for me just to get a new computer altogether, and if at all possible, transfer the data on my hard drive from computer to computer. Sry bout the wait.

Kids these days will never understand the fights between parents and kids over them wanting to make a phone call and having to disconnect and then reconnect

If you look at the numbers being dialed at the beginning you can see that each one is made of two distinct frequencies played on top of each other. There's three different frequencies for the columns on the touchstone keypad and four different frequencies for the rows, when you press a button on a touchstone phone it plays the note for the row and the column. The pound sign and the star were added to the dial pad because they'd already decided to include zeros in phone numbers and the 3x4 grid would give you 12 options, so they just added two arbitrary symbols.

God that scared me so much as a kid. And I remember going on the internet late at night and smothering it with a pillow to quiet it down lol.

The dabs of humour make this such a great video and very easy to digest. Thanks!

I was always curious why it made those specific sounds no matter who's PC you were connecting with. Thanks for explaining it to me!

That always scared me as a kid. Even though I was a mid- 2000’s kid, I got many hand-me-downs from my older siblings. Whenever my grandpa connected to the internet, I had to stand in the other room and cover my ears. That sound still scares me to this day.

This is a 10/10 video. Very direct, covers just enough background and history, and gives you a occasional laugh. Thanks!

I used to be able to tell if it wasn’t going to work by the sound it made… which was 99.9%of the time. I always thought/imagined it sounded like they were arguing back and forth before saying fuck it- and either giving up and leaving. or murdering each other…depending on the day and how the argument ended. This confirms it.. they were arguing…..

He sounds like the guy that designed the system or something.

These sounds is what I tell people I think animals sound like, we can’t understand what they say, but in reality is a highly complex form of communication

I love how the fuzzy part at the end looks exactly how it sounds

Aol omg blast from the past kids have no idea the struggle us 90s kids had brings back memories

At the 5 minute mark on the dot you talk about "The probing segment". What I would find even more interesting is discussing the differences between a 56K modem and earlier modems. This is obviously a 56K modem. The earlier modems didn't have that "Probing segment" or what I call the "Dong Dong Segment" If you followed modems through their history of progression as I've lived through you will know that with each modem series, 300, 1200, 2400, 9600, 14400, 28800, 33600 and 56K, each one along the way added and subtracted things to the overall handshake sounds. 2400 was really short in comparison to 56K. For historical purposes, I think it would be even more informative to discuss the various modem speeds throughout history and their own individual handshaking. Good job and very informative on the 56K modem, but would be nice to see the others as well.

This is impressive. And you now have 90 subscribers

1:03 Captions *[MUSIC]* *[APPLAUSE]*

As someone who was born pretty much when dial up started to become irrelevant, I find this very interesting. It's cool that you could hear computers literally talking to each other. It makes me wish modern internet devices had some kind of way to make the data they send and receive audible.

I like when young ppl explain old ppl stuff

I barely understood what has happening and yet this video was entertaining and I managed to still “understand” it WELL DONE🎉❤

When I was a kid I thought this was just some sound AOL made up (unique to AOL) to tell humans that the Internet was connecting. I don’t know why I thought anyone would program such a horrific sound for a simple informational message. Of course now I understand that this was computers doing INTENSE NEGOTIATIONS!!!!

this is a lot more interesting than I thought it would be.... idk why I'm here

I'm old enough to remember when the phone line did not have echo suppression and you literally heard every word you said repeated back about a second delay from the time you speak it depending on how far you were if you were hundreds or thousands of miles from the other person there would be a longer delay and in the first days of satellite when the phone companies would bounce the signal off the satellite the delay would be quite significant about 3 to 5 seconds delay between the time you said it and the time you heard it back and it was truly annoying and made it very hard to talk without getting distracted As far as I remember it was still happening in some parts of the country in the early '80s

I like it when the receiving modem is deciding on a final bit rate and final modulation rate, best part of the song.

I became quite familiar with a lot of the sounds during the connection process, so it's interesting to learn what each of the sounds actually represent. 😊👍

The first 45 seconds of this video are pure gold.

It’s fascinating how computers from the 90s have better communication skills than I do with a singular person

I can't even believe connection was based on audio wave rather than radio wave. I've learned sort of DTMF and FSK, but this thing is cool.

Dear Sacred Gamer. You are awesome. I listened to this too many times to count in the olden days, and it's satisfying to hear what it all was. Thank you.

Very, very good video. I did this stuff at uni for my degree and you've done a fantastic job. DSL doesn't give average users the same ability to visualise what's going on since we never hear, see or touch it! But dial up allowed users to sense it via sound and analyse it easily. Essentially it's all the same thing though, just faster frequencies now that sound much more high pitched when you do get a chance to convert the signal to sound!

6:45 no it isn't, it's another probing signal by a calling modem to measure signal to noise ratio and some other things so the answering modem could start sending data in PCM modulated and correctly adjusted signal which gave you 56 kbit/s max (the last sequence is still random data as it was before that probing sequence, BUT the modulation is different - it was TCM before, now it's PCM). I didn't have this sequence in my country so I connected using V.34 protocol and my max speed was 33.6 kbit/s.

This has given me the most information about how modems work out of every video that I’ve watched

Something about the sound terrified me as a child...always felt as if something was physically coming through the line and would come out through our family PC... some sort of digital monster trying to rip its way into reality.

i can just imagine them talking to each other 3:42 its sooo cute ^v^

*BECAUSE IT'S A LAPTOP* HAHAHAHAHAHA

It's crazy how we figured this shit out and how far technology has come in such a short amount of time.

Your voice and the way of delivering it is hilarious, almost sardonic and sarcastic. Love it.

I think it's interesting that the sound of success @ 6:42 is also the sound they used in The Matrix when someone used a phone on the inside of the Matrix, and made a successful call to outside of the Matrix.

rip anyone with head phones

It's so cute to hear 2 machines talk with each other

maybe they talk in aphex twin's language

This is fascinating, watching machines communicate. Technology is amazing

Did you know that the dial-up sounds plays below 20 hz and those are sometimes called "ghost frequencies" they cannot be heard by us humans but they can make your chest heavy or make you feel like you're being watched, cool right?

That's exactly what I was looking for. Thank you very much for this video.

So essentially, it’s an audible telepathic communication between machines. They greet one another, exchange personal information, then calibrate a communication bridge based on their unique information.

0:06 i was wearing good quality headphones. it both hurt my ears and scared the crap out of me

Nobody: Modems: Makes random noises to congratulate people

this video is not only super useful and interesting, but well edited and hilarious. not sure if you're still active, but i'm definitely subbing!

I wondered this and thought there is 0% chance someone has also asked this, let alone made a video. Thank you

RIP You Will Be Missed :-(

Easy solution: Turn off your sound.

Not sure why I randomly searched for this info and not sure why this very well put together video was made and waiting for me.

Nicely done. Brought back good memories. Thank you.

The probing part was the scariest part

"because it's a laptop." you do know they make usb modems, right?

I watched this video with a dial-up connection. It was worth the wait.

this man needs to have 1 billion subscribers for this video

Video speed: Normal Your talking speed: .75 Solution, set it to 1.25

A long time ago I remember my babysitter laughing at this when she used to turn on our old computer.

This is the best explanation of a tech concept I have ever seen.

so essentially it's a calibration conversation between two modems that in the '90's were having screaming matches after being woken up at stupid o'clock in its respective time zone.

SUOMI MAINITTU TORILLA TAVATAAN 🇫🇮🇫🇮🇫🇮🇫🇮🇫🇮🇫🇮🇫🇮🇫🇮🇫🇮🇫🇮🇫🇮🇫🇮

"Does everyone understand the video?" "Totally! (I have zero idea.)"

Great explanation! Compact but complete, superb!

That was actually an interesting video I learned something I didn't know I didn't think I would learn

As someone who seems some of tech as only a step down from magic this was both really informative, that which I understood lol, and a fun nostalgia trip. Good work! Look at me being an earlier adopter... in 2019 😃.

Weird how this sounds means a GOOD thing, given how intimidating and sinister it sounds especially towards the end. It sounds like just static and sounds of distress.

Thanks, you did a lot of work and I appreciate the education. You should have much more hits on this.

wow, I never knew what all those sounds were. Thanks! Kind of like a history lesson

So a late 90’s computer convo...got it :v Honestly though this was very educational I liked it X3 who knew it was doing so many things so fast

Well now we know how to understand tech priests...

Thanks mate that was exactly what I was looking for and your video was the first thing I clicked on. Champion.

is nice how you researched all of this with all those sources posted on it.

OMG! This video made me think about old 90's modems and I have come to a conclusion! OLD 90's MODEMS ARE SELF AWARE!!! BECAUSE THEY KNOW HOW THEY SOUND! (I think that's why they made eathernet and Wi-Fi and completely ditched Dial-Up)

Some of this is a bit wrong, or could be clarified better. The part where you say they are sending a bunch of random data is actually a probing signal to characterise the phone line signal loss. Analog lines attenuate different frequencies by different amounts, and this non linear behavior needs to be taken into account to maximize signal to noise ratio. Each side sends a signal that the other side analyzes. They then tell each other the results so they can adjust their transmission levels to maximize signal quality. Next, the rising volume part right before the end is not a "victory"signal. Lol Pots (plain old telephone service) lines can be converted from analog to digital and back again instead of being purely analog the entire span, especially long distance calls. This badly degrades the signal, but only for certain signal types. The modems can detect this with the special probing signal, and when it is detected (it isn't in this example), further negotiation must be done to figure out framing types on the digital part of the span, this allowing better signal usage and reducing the chance of corrupt data.

Thanks! Great video on a surprisingly interesting and easy-to-follow topic.

The only explanation I could find. And it's awesome!