WEBVTT 00:00.000 --> 00:28.320 This is my third talk today. 00:28.320 --> 00:33.320 So I'm a little bit tired. 00:33.320 --> 00:36.320 Hello, everyone. 00:36.320 --> 00:41.600 My talk is about dial-up connections, basically, 00:41.600 --> 00:49.320 why it's needed and how to run an Opschool ISP at dial-up ISP. 00:49.320 --> 00:52.080 So who am I? 00:52.080 --> 00:56.680 I'm Ozjam from Free Software Association in Turkey 00:56.680 --> 00:59.440 and Hector Space Stumble as well. 00:59.440 --> 01:02.440 I'm from Stumble, I live in an Istanbul. 01:02.440 --> 01:08.600 And usually, I'm working on free software activism 01:08.600 --> 01:13.880 and professionally I'm a software developer. 01:13.880 --> 01:17.800 But I like Tinkering and try to hack things. 01:17.800 --> 01:25.800 And this talk aims to cover the basics of dial-up connections. 01:25.800 --> 01:27.560 What's the nature of it? 01:27.560 --> 01:32.200 Why do you need dial-up connections in 21st century? 01:32.200 --> 01:38.840 And I also set up your own personal dial-up ISP. 01:38.840 --> 01:41.040 So what was dial-up? 01:41.040 --> 01:46.280 Actually, it was funny for me to write this slide 01:46.280 --> 01:50.760 because I started using internet with dial-up connections, 01:50.760 --> 01:54.480 but there are a younger generation. 01:54.480 --> 01:59.600 So so many people have no idea about non-Broadband connections 01:59.600 --> 02:03.120 like dial-up or ISDN. 02:03.120 --> 02:06.000 It was like the fact that the main method 02:06.000 --> 02:10.320 to connect to the internet in 90s and early 2000s, 02:10.320 --> 02:13.080 especially in Turkey, I don't know, about the world, 02:13.080 --> 02:18.680 but until the ADSL era, some places like Romanias, 02:18.680 --> 02:25.360 which just to fiber, but stories can differ. 02:25.360 --> 02:28.760 And it uses the Play-Nol telephone network 02:28.760 --> 02:31.560 to carry the signals. 02:31.560 --> 02:39.800 And you need a model to turn the signals into data, basically. 02:39.800 --> 02:41.600 And voice. 02:41.600 --> 02:43.960 And there is an advantage here, 02:43.960 --> 02:49.560 like dial-up connections need only a telephone line. 02:49.560 --> 02:54.000 Everything goes within a phone call. 02:54.000 --> 02:57.200 So you don't need any additional infrastructure. 02:57.200 --> 03:00.600 That's why in the early stage of the internet, 03:00.600 --> 03:03.800 we were using such methods to connect to internet 03:03.800 --> 03:06.200 because it was a new technology. 03:06.200 --> 03:11.040 And there was no big investments from governments 03:11.040 --> 03:13.200 or companies to the internet. 03:13.200 --> 03:16.440 So there is a phone line. 03:16.440 --> 03:19.920 We have phones for the case at 90s. 03:19.920 --> 03:27.760 So we have a fully-verked, fully-verkin infrastructure. 03:27.760 --> 03:31.400 So we just utilized it. 03:31.400 --> 03:37.600 And in some cases, even a subscription was not required. 03:37.600 --> 03:40.320 There was a service in Turkey. 03:40.320 --> 03:42.200 I don't know about the world, 03:42.200 --> 03:44.640 but it was 1.46. 03:44.640 --> 03:46.280 It was a phone number. 03:46.280 --> 03:50.200 If you call 1.46, you will get the internet. 03:50.200 --> 03:52.240 It was expensive. 03:52.240 --> 03:56.360 But if you don't have subscription in advance, 03:56.360 --> 03:58.360 you can connect anytime. 03:58.360 --> 04:03.040 And the 1.45 was the subscription one. 04:03.040 --> 04:06.040 So you can just connect anonymously, basically. 04:06.040 --> 04:14.600 But this also means that providing internet to people 04:14.600 --> 04:21.160 have the same prerequisites because if you have phone lines 04:21.160 --> 04:24.280 enough, you can provide internet to other people. 04:24.280 --> 04:29.320 You don't need to dig up holes like these streets 04:29.320 --> 04:32.880 and install cables there. 04:32.880 --> 04:35.520 If you have phone in your office, 04:35.520 --> 04:37.280 you can provide internet. 04:37.280 --> 04:42.080 And there were startups like that during the.com bubble. 04:42.080 --> 04:44.520 But there are issues. 04:44.520 --> 04:51.240 That's why we are not using it right now for daily use. 04:51.240 --> 04:54.040 Low bandwidth, basically. 04:54.040 --> 04:58.640 It's very low if you compare to 2026. 04:58.640 --> 05:02.960 And it cost a lot. 05:02.960 --> 05:08.800 The theoretical highest bandwidth was 56 kilobits per second. 05:08.800 --> 05:12.800 We have gigabits in our home street, 05:12.800 --> 05:15.920 well, Wi-Fi would. 05:15.920 --> 05:19.920 And like 56 was never a real number. 05:19.920 --> 05:23.040 You usually got around 40. 05:23.040 --> 05:28.800 And the problem is you have to pay to the ISP for the internet's 05:28.800 --> 05:29.640 connection. 05:29.640 --> 05:32.760 And you have to pay also for the phone call. 05:32.760 --> 05:35.960 Usually, because you call a number. 05:35.960 --> 05:38.560 And it's a phone call. 05:38.560 --> 05:45.280 So you usually charge twice for it. 05:45.280 --> 05:49.640 That's why back then, being online at all times 05:49.640 --> 05:52.120 was not a thing. 05:52.120 --> 05:57.920 You call your dial, get online, get the info, 05:57.920 --> 06:01.960 or get the web page, whatever, then hang up. 06:01.960 --> 06:06.440 So the connection is over. 06:06.440 --> 06:08.920 And there comes the decline of this thing. 06:08.920 --> 06:14.280 Starting from 2000s, the broadband connection 06:14.280 --> 06:16.440 replaced dial-up. 06:16.440 --> 06:21.400 And you know, you are probably still using one of these DSL 06:21.400 --> 06:28.240 cable or F-fiber to the X, fiber to the home, fiber to the building. 06:28.240 --> 06:36.400 And of course, mobile broadband connection in our mobile phones. 06:36.400 --> 06:38.240 So that's why most of the countries have 06:38.240 --> 06:44.520 shut down their dial-up services in early 2010s, 06:44.520 --> 06:46.640 including Turkey. 06:46.640 --> 06:50.080 When I checked out the AOL, American online, 06:50.080 --> 06:54.520 it was the biggest ISP at the time. 06:54.520 --> 06:56.560 Shut it down on the four months ago. 06:56.560 --> 07:05.440 In November, so, and while more than 150,000 people 07:05.440 --> 07:08.680 were using it at the time. 07:08.680 --> 07:11.560 And in most places, even PSDN is in decline. 07:11.560 --> 07:16.960 So why do you need it in 2026? 07:16.960 --> 07:21.720 In the 21st century, since this is the retro computing 07:21.720 --> 07:26.040 era, you probably may have retro devices that 07:26.040 --> 07:29.560 have RJ11 ports on it. 07:29.560 --> 07:36.920 So sometimes it's the only way to connect your old devices 07:36.920 --> 07:39.920 retro devices to the internet. 07:39.920 --> 07:42.600 So you may need a dial-up service. 07:42.600 --> 07:47.280 And the other dial-up does not require a complex infrastructure. 07:47.280 --> 07:53.640 So if you have one, you will have an internet connection. 07:53.640 --> 07:58.080 Have you ever seen such device? 07:58.080 --> 08:02.080 For those who don't know, it's an acoustic coupler 08:02.080 --> 08:04.920 and old version of a modem. 08:04.920 --> 08:15.160 You use this and dial and put it on the acoustic coupler. 08:15.160 --> 08:22.040 And then you get the internet data connection, whatever. 08:22.040 --> 08:25.960 Dial-up can be saved here. 08:25.960 --> 08:31.680 It can be used a tool to circumnaut censorship. 08:31.680 --> 08:36.920 During the Egyptian uprising, the internet was 08:36.920 --> 08:38.280 undercomplete like that. 08:38.280 --> 08:40.360 Now in Iran. 08:40.360 --> 08:43.200 So the telephones are still working. 08:43.200 --> 08:48.440 So in some case, it can save lives. 08:48.440 --> 08:51.360 You can connect to the internet via a phone call. 08:51.360 --> 08:54.280 And people are doing it in 2011. 08:54.280 --> 09:00.600 People will probably do it in the future. 09:00.600 --> 09:04.160 So why did I start this research? 09:04.160 --> 09:07.000 Turkey has similar troubles from time to time. 09:07.000 --> 09:11.240 If there is a protest, they throttle the internet. 09:11.320 --> 09:16.480 But by law, it's mandatory for government to provide payphones. 09:16.480 --> 09:18.480 So payphones still exist anywhere. 09:18.480 --> 09:23.480 They do not install new ones, but we have working payphones everywhere. 09:23.480 --> 09:32.160 So the acoustic coupler was my plan, my guide to this research. 09:32.160 --> 09:36.440 But before that, I started a project called Neolung for the six. 09:36.480 --> 09:41.400 It's coming from the anonymous ISP in the 1930. 09:41.400 --> 09:43.480 It's an information gateway right now. 09:43.480 --> 09:49.120 But I want it to be usable as an ordinary dial-up ISP. 09:49.120 --> 09:51.320 But I made research. 09:51.320 --> 09:53.360 Some, I found some documents, some guides. 09:53.360 --> 09:54.640 They're really well. 09:54.640 --> 09:58.240 But some updated and requires hardware. 09:58.240 --> 10:01.560 I have no chance to find. 10:01.600 --> 10:09.960 So you need a model for the ISP to dial in a computer to be the server. 10:09.960 --> 10:16.080 A model for the client, a landline, and analog telephone adapter, 10:16.080 --> 10:20.480 p-bex, something to carry the telephone. 10:20.480 --> 10:24.680 So now there is a server in Istanbul. 10:24.720 --> 10:30.760 In my personal office, there is a thing that we people would. 10:30.760 --> 10:37.360 Voice over IP subscription from a Turkish company. 10:37.360 --> 10:41.920 And I have this model because it's the only hardware model 10:41.920 --> 10:44.240 that I can buy right now. 10:44.240 --> 10:48.080 I'm not sponsored by the way, it's the only option. 10:48.080 --> 10:50.960 And this is the photo of it. 10:51.000 --> 10:55.520 I take the photo and take to the plane for braces. 10:55.520 --> 10:59.120 So I hope it still works. 10:59.120 --> 11:02.920 You see, this is the computer running Ubuntu. 11:02.920 --> 11:05.000 This is the model there, the USB thing. 11:05.000 --> 11:06.360 And this is the landback. 11:09.520 --> 11:14.240 So my stack here, on the client, this variable laptop, 11:14.240 --> 11:17.760 a thingpad, the subscription from the same company, 11:17.760 --> 11:18.840 and this one. 11:18.840 --> 11:22.200 This is an analog telephone adapter. 11:22.200 --> 11:26.160 So now it's connected to the voice over IP. 11:26.160 --> 11:30.120 And we were about to cancel the demo. 11:30.120 --> 11:33.480 We found the empty, like, it's on this part here. 11:33.480 --> 11:37.440 So I hope it works. 11:37.440 --> 11:41.800 And the same model here as well. 11:41.800 --> 11:47.840 We will use TPP and Getty on the server side. 11:47.840 --> 11:50.560 And Getty will run the model. 11:50.560 --> 11:55.960 And TPP will the PPP demon, especially. 11:55.960 --> 11:57.920 We'll do the network stack. 12:01.600 --> 12:05.800 To set up a server, just install PPP and Getty. 12:05.800 --> 12:07.200 Connect your model. 12:07.200 --> 12:08.480 I'm using a USB model. 12:08.480 --> 12:11.920 So it will show up like this. 12:11.920 --> 12:13.920 But you have to use a hard layer model. 12:13.920 --> 12:15.360 It's very important. 12:15.360 --> 12:16.880 Like there are two types of models, 12:16.880 --> 12:20.720 software models or VM models, and hardware models. 12:20.720 --> 12:22.440 Software ones are cheaper. 12:22.440 --> 12:28.560 But they only change the signal to the same computer 12:28.560 --> 12:29.160 understands. 12:29.160 --> 12:31.160 But they don't have modulation. 12:31.160 --> 12:33.080 The modulation is done on software. 12:33.080 --> 12:35.600 It's super impossible to debug. 12:35.600 --> 12:37.440 And usually you don't have driver. 12:37.440 --> 12:41.120 So you need to use the hardware models. 12:41.120 --> 12:42.400 So it will show up like this. 12:42.400 --> 12:48.240 And you create a systemD server, a systemD demon about it, 12:48.240 --> 12:50.760 and make a configuration like this. 12:54.240 --> 12:59.840 So it will define our connection methods, 12:59.840 --> 13:02.480 like these speed of the serial port. 13:02.480 --> 13:06.520 We will use that only, no facts, something like this. 13:06.520 --> 13:09.880 And configure the PPP as this. 13:15.880 --> 13:21.000 We define our IP limits for this IP. 13:25.800 --> 13:26.640 I have limited time. 13:26.640 --> 13:29.560 So I skip. 13:29.560 --> 13:32.560 So you create a user for authentication or dinner 13:32.560 --> 13:34.400 or a very unique user. 13:34.400 --> 13:38.680 And in the dialogue group, with shell of PPPD, 13:38.680 --> 13:41.440 and you will log in from here with this user. 13:41.440 --> 13:44.960 And you add the user to PPPD demon. 13:44.960 --> 13:50.280 And when the username password comes from the clients, 13:50.280 --> 13:52.640 it will take you online. 13:52.640 --> 13:57.920 And you need to enable IP forwarding and masquerading. 13:57.920 --> 14:04.280 Masquerading is a little bit tricky on Ubuntu 24. 14:04.280 --> 14:07.560 That's why I wrote a gift on how do you do it. 14:07.560 --> 14:10.760 It's on the resources part of this talk, 14:10.760 --> 14:12.080 in source them website. 14:12.080 --> 14:14.720 So you can check that. 14:14.720 --> 14:21.200 And since we are using YP, it's a problem. 14:21.200 --> 14:25.000 It's hostile to the models. 14:25.000 --> 14:27.760 They use super high compression. 14:27.760 --> 14:33.160 And it's designed for voice, not for data. 14:33.160 --> 14:39.680 That's why it usually breaks your data grams. 14:39.680 --> 14:45.560 That's why I tried so many conflicts to make it usable. 14:45.560 --> 14:51.160 And I realized that basically canceling any kind 14:51.160 --> 14:54.800 of fancy stuff and compressions, echo, canceling, 14:54.800 --> 14:58.440 silence, detection, everything you need to cancel it. 14:58.440 --> 15:07.240 And the only codec works is G711, but even though you use PST 15:07.240 --> 15:10.200 and like the original landline, probably, 15:10.200 --> 15:16.840 your provider is carrying your voice from some provider 15:16.840 --> 15:18.520 to another via voice. 15:18.560 --> 15:24.200 So that's why you will face this compression all the time. 15:24.200 --> 15:30.200 That's why 56 kilobits is a dream right now. 15:30.200 --> 15:36.320 You cannot probably achieve it if you're not like working locally. 15:36.320 --> 15:43.640 Our theoretical limit is 21,000 bits per second. 15:43.640 --> 15:47.160 But if you have like 14J, it's OK. 15:47.160 --> 15:48.560 Where are we, OK? 15:48.560 --> 15:54.280 And I will try 9.6 kilobits today. 15:54.280 --> 15:55.760 Client is easy. 15:55.760 --> 15:59.800 You just install PPP and wave dial. 15:59.800 --> 16:05.200 It's a tool to make the calls and take your line. 16:05.200 --> 16:08.840 And the part is the same. 16:08.840 --> 16:10.320 There is a configuration tool. 16:10.320 --> 16:13.280 If you run wave dial calls, it detects 16:13.320 --> 16:14.240 your modem. 16:14.240 --> 16:14.840 It's fine. 16:14.840 --> 16:19.600 It's made to configuration and auto generate a config for you. 16:19.600 --> 16:21.600 And this is the config. 16:21.600 --> 16:26.480 You need to learn the AT comments from your modems manual. 16:26.480 --> 16:30.400 This basic PDAs reset the modem. 16:30.400 --> 16:36.400 Resets it to the configuration to factory defaults. 16:36.400 --> 16:38.600 The working mod is data. 16:38.600 --> 16:39.520 Zero is data. 16:39.520 --> 16:42.640 The others are facts or something. 16:42.640 --> 16:46.200 We define the modulation and speed. 16:46.200 --> 16:50.480 And I hope this is not working right now. 16:50.480 --> 16:56.640 But this is the AT command for opening the speaker. 16:56.640 --> 17:04.880 To hear the connection sound, but my USB modem has no feature. 17:04.880 --> 17:09.760 And the phone number, the username, password, whatsoever. 17:09.760 --> 17:13.440 But we disable every kind of stuff here as well. 17:13.440 --> 17:19.320 All compressions, all like echo cancelation features. 17:19.320 --> 17:26.080 And we match the route of PPP zero is the default route. 17:26.080 --> 17:33.200 So before connecting to the dial up, 17:33.200 --> 17:38.680 do not forget to close your messaging thing or your email client 17:38.720 --> 17:45.160 because they use more bandwidth than reaching carry. 17:45.160 --> 17:52.840 And open the terminal window and type radar. 17:52.840 --> 17:56.480 And it will dial your SP server and connect you to the internet. 17:56.480 --> 17:58.360 So it's demo time. 17:58.360 --> 18:00.080 It's super untested. 18:00.080 --> 18:04.560 I will just try to connect. 18:04.560 --> 18:10.000 So first of all, I disconnect from the internet. 18:34.560 --> 18:47.680 No, since this is a Turkish number calling, voice or IP, 18:47.680 --> 18:53.800 if it was a landline probably required. 18:53.800 --> 18:57.120 The last time, it was OK in the turn. 18:58.120 --> 19:04.120 You have no rope in getting it. 19:04.120 --> 19:10.120 It should not be an instant connection. 19:10.120 --> 19:13.120 No, no, just I tried it here. 19:13.120 --> 19:18.120 It worked, like, if it means the group. 19:18.120 --> 19:25.120 That sounds like, you know, like, overheating. 19:25.120 --> 19:43.120 I'm going to try it one more time. 19:43.120 --> 19:50.120 Yeah. 20:14.120 --> 20:34.120 I will wait for another minute, then continue. 20:34.120 --> 20:48.120 Yeah, so let me continue and we will try it one more time. 20:48.120 --> 20:52.120 So yeah. 20:52.120 --> 20:54.120 So you can use Dilo. 20:54.120 --> 20:58.120 It's a browser, a graphical browser and links and links. 20:58.120 --> 21:01.120 I don't know if they pronounce differently. 21:01.120 --> 21:06.120 As a text-based browser and there is a search engine called VB.me. 21:06.120 --> 21:09.120 You can build your, like, plain HTML. 21:09.120 --> 21:10.120 Same. 21:10.120 --> 21:14.120 Do not use HTBS, but it requires, like, a huge amount of data. 21:14.120 --> 21:18.120 And you'll probably time out. 21:18.120 --> 21:21.120 And there was a search engine back in 90s. 21:21.120 --> 21:26.120 You can set up your own proxy as well. 21:26.120 --> 21:31.120 Yeah. 21:31.120 --> 21:34.120 What? 21:34.120 --> 21:38.120 Polypoh? 21:38.120 --> 21:39.120 Yeah. 21:39.120 --> 21:48.120 I'm not using, like, HTTP, as I built a gateway for HTTP on nail-long 46. 21:48.120 --> 21:50.120 And I'm usually using it. 21:50.120 --> 21:53.120 You can check it out in GitHub as well. 21:53.120 --> 22:01.120 So some notes on improving the connection stability. 22:01.120 --> 22:11.120 You can adjust the MTO, lower to lower your package size. 22:11.120 --> 22:22.120 In V32, it's 512 is okay, but the lower bandwidth you can drop. 22:22.120 --> 22:27.120 And, like, close TCP timestamps, TCP-Sag Windows scaling, 22:27.120 --> 22:31.120 because they require higher bandwidth. 22:31.120 --> 22:39.120 And so, next on my research, I was planning to implement it on Android. 22:39.120 --> 22:41.120 I'm connecting a research. 22:41.120 --> 22:47.120 I never did anything on Android itself, but I'm looking for the Android internals 22:48.120 --> 22:54.120 to implement this phone's telephony. 22:54.120 --> 22:59.120 And I really want to do the acoustic cover thing, because it's cool. 22:59.120 --> 23:04.120 And now the web dial is our only option. 23:04.120 --> 23:07.120 But there was non-PPP back there. 23:07.120 --> 23:11.120 It was a graphical user interface for dialing. 23:11.120 --> 23:15.120 And, like, you can find the package and the source code. 23:15.120 --> 23:22.120 Like, you can compile it, but it's last updated in 2006. 23:22.120 --> 23:28.120 So it needs a GTK for something like modern. 23:28.120 --> 23:31.120 Maybe I can work on it. 23:31.120 --> 23:36.120 And, yeah, I'm going to provide a low bandwidth information gate. 23:36.120 --> 23:41.120 I talked about this, and maybe a multi-user dungeon if I can. 23:42.120 --> 23:47.120 So, for further reading, this is the project's GitHub. 23:47.120 --> 23:51.120 It's not so well updated, but I will try to do it. 23:51.120 --> 23:55.120 And special thanks to the micro-systems and dial-up.world. 23:55.120 --> 23:57.120 It's an ISP. 23:57.120 --> 24:00.120 And it's this starting point of this project. 24:00.120 --> 24:05.120 But, yeah, their guides are available with old. 24:05.120 --> 24:09.120 So, I was trying to update it. 24:10.120 --> 24:12.120 Thank you for listening. 24:12.120 --> 24:16.120 If you have any questions, I can try to answer them. 24:16.120 --> 24:20.120 And those are my contacts. 24:20.120 --> 24:26.120 So, if you have, like, question, up to which you can ask as well. 24:26.120 --> 24:39.120 So, now we come to the end of the agenda. 24:39.120 --> 24:44.120 So, if you have questions now, as long as we can keep the screen with us, 24:44.120 --> 24:47.120 and as long as you have questions, we can go around. 24:47.120 --> 24:48.120 Yeah. 24:48.120 --> 24:49.120 I will take that. 24:49.120 --> 24:50.120 Oh. 24:50.120 --> 24:52.120 Can you pass the mic? 24:53.120 --> 24:56.120 I'm fortunate. 24:56.120 --> 25:01.120 Can you maybe show the slide with your PPP configuration? 25:01.120 --> 25:02.120 Hi. 25:02.120 --> 25:04.120 You can download these slides. 25:04.120 --> 25:07.120 Well, if you can show, I have to question for you, like, 25:07.120 --> 25:09.120 regarding this configuration, because I did this. 25:09.120 --> 25:12.120 I was providing dial-up access before. 25:12.120 --> 25:13.120 Cool. 25:13.120 --> 25:15.120 And the client or the server? 25:15.120 --> 25:17.120 Served hours via ISP, right? 25:17.120 --> 25:18.120 No, no. 25:18.120 --> 25:20.120 Yeah, this one, this one, this one, no CCP. 25:21.120 --> 25:24.120 I think many of those compression settings, 25:24.120 --> 25:29.120 you are turning off, is purely on the LCP or PPP protocol level. 25:29.120 --> 25:30.120 Compression overhead. 25:30.120 --> 25:32.120 It won't help you with the telephone. 25:32.120 --> 25:34.120 I think you can leave those enabled, 25:34.120 --> 25:36.120 and you will get much more bandwidth. 25:36.120 --> 25:40.120 Actually, I tried to, like, enable them, 25:40.120 --> 25:42.120 and, like, they are enabled. 25:42.120 --> 25:45.120 Yeah, normally they are enabled. 25:46.120 --> 25:48.120 I don't know. 25:48.120 --> 25:52.120 The connection constantly drops. 25:52.120 --> 25:54.120 Like, the bandwidth is okay. 25:54.120 --> 25:56.120 Like, my ping times are okay. 25:56.120 --> 25:57.120 Okay. 25:57.120 --> 25:59.120 It constantly drops the connection. 25:59.120 --> 26:01.120 That's why, when I close them, 26:01.120 --> 26:04.120 I got some stable connection. 26:04.120 --> 26:06.120 But, you know, now. 26:06.120 --> 26:07.120 I understand, okay. 26:07.120 --> 26:10.120 But, vis-a-mally shouldn't hurt. 26:10.120 --> 26:13.120 I mean, cancellation, everything is a problem. 26:13.120 --> 26:15.120 You're right, but this will not turn it off. 26:15.120 --> 26:19.120 It will be just changing your pockets. 26:19.120 --> 26:20.120 We've sent. 26:20.120 --> 26:24.120 And second thing, for 56k, I have bad news. 26:24.120 --> 26:27.120 You need the digital line on your provider side. 26:27.120 --> 26:29.120 You need an ISDN. 26:29.120 --> 26:34.120 I was using ISDN, a 30-tonal connection in the Arab Spring. 26:34.120 --> 26:37.120 We were giving it to the Egyptians. 26:37.120 --> 26:40.120 So, we had the proper digital line. 26:40.120 --> 26:43.120 And then you can get 56k on the other side. 26:43.120 --> 26:44.120 Yeah. 26:44.120 --> 26:45.120 You're right. 26:45.120 --> 26:49.120 I used ISDN in this Congress. 26:49.120 --> 26:51.120 Because communication Congress. 26:51.120 --> 26:52.120 And talk with the people. 26:52.120 --> 26:55.120 But the problem is, in Turkey, 26:55.120 --> 27:00.120 ISDN was available for only a very short time. 27:00.120 --> 27:02.120 And usually for business customers. 27:02.120 --> 27:03.120 That's why. 27:03.120 --> 27:09.120 Like, I have no chance to find any kind of hardware or similar. 27:09.120 --> 27:10.120 Yeah. 27:10.120 --> 27:11.120 Okay. 27:11.120 --> 27:18.120 So, if you have more questions, just come here to the front. 27:18.120 --> 27:20.120 And discuss directly with us. 27:20.120 --> 27:23.120 I guess that would be the most easy now. 27:24.120 --> 27:27.120 See you all, shall we? 27:27.120 --> 27:28.120 Yeah. 27:28.120 --> 27:29.120 Yeah. 27:29.120 --> 27:32.120 That's right. 27:32.120 --> 27:35.120 No, I'm just kidding. 27:35.120 --> 27:38.120 What is ISDN? 27:38.120 --> 27:39.120 I'm just kidding. 27:39.120 --> 27:40.120 I'm just kidding. 27:40.120 --> 27:43.120 I'm just walking around to meet the voice. 27:43.120 --> 27:44.120 I'm just kidding. 27:44.120 --> 27:45.120 I'm just kidding. 27:45.120 --> 27:46.120 All right. 27:46.120 --> 27:47.120 I'm going to take a break. 27:47.120 --> 27:51.120 I'm going to go to the guest room. 27:52.120 --> 27:55.120 We're trying to help us out. 27:55.120 --> 27:58.120 We are in the radio for speakers. 27:58.120 --> 27:59.120 That's right. 27:59.120 --> 28:02.120 We can use a picture later. 28:02.120 --> 28:06.120 But, you know, on the radio equipment, 28:06.120 --> 28:10.120 you sound noise as in without any compression. 28:10.120 --> 28:14.120 But the voice of the radio is usually, like, 28:14.120 --> 28:16.120 have issues. 28:17.120 --> 28:18.120 That's fast enough. 28:18.120 --> 28:22.120 I get all the issues. 28:22.120 --> 28:27.120 Just like 1.2 Together 1000-200 boats. 28:27.120 --> 28:29.120 But beyond that, 28:29.120 --> 28:30.120 issues. 28:30.120 --> 28:52.120 I think it's because it's not connecting to the carrier, as it's saying there, but what is it? 28:52.120 --> 29:10.120 But what you can do is tell the pull-out to actually show you the signal straight and tell you before it actually tries to 29:10.120 --> 29:18.120 tell you what's the quality of current vegetation. 29:18.120 --> 29:24.120 We know if it's breaking because it just doesn't understand. 29:24.120 --> 29:26.120 Yeah, yeah, I think it's the reason why it's... 29:26.120 --> 29:34.120 But what really is this thing, is how this thing has an interface. 29:34.120 --> 29:40.120 It's an interface where it can check it, but I'm not connected to its interface. 29:40.120 --> 29:44.120 It's can only access the Lyade local network. 29:44.120 --> 29:52.120 So that's why this is a super uncasted demo, and how to get this information to the ATCOM. 29:52.120 --> 29:58.120 So you can find and put it directly to the line with the ATCOM. 29:58.120 --> 30:04.120 So if you move it in your mind, we can try it on. 30:04.120 --> 30:06.120 Yeah, we can do that. 30:06.120 --> 30:08.120 But nothing stays on. 30:16.120 --> 30:18.120 I tried it. 30:18.120 --> 30:20.120 A thousand times it works, but... 30:20.120 --> 30:24.120 Yeah, probably. 30:24.120 --> 30:26.120 Yeah, probably. 30:28.120 --> 30:32.120 Yeah, I've seen it walking just before you started. 30:38.120 --> 30:40.120 Was I the last one? 30:40.120 --> 30:42.120 Yeah, yes. 30:44.120 --> 30:46.120 So... 30:46.120 --> 30:48.120 So it's just like that. 30:48.120 --> 30:50.120 I came up.