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2600.network Dialup Service

2600.network

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Re: 2600.network Dialup Service

#11

Post by 0xEF »

alberth wrote: post #9

FYI - 2600 Hz is a common handshake tone used in telco. Hence why “2600” is referenced. https://en.m.wikipedia.org/wiki/2600_hertz

Lots of fun history around 2600Hz for those too young to remember or not part of the phreaking crowd, a fairly extinct form of hacker these days.

A phreaker going by Joybubbles was the first to exploit the tone by whistling. Later, a toy whistle in a cereal box was found to be able to produce the tone, leading to further exploit by John Draper, aka, Cap'n Crunch.

You can 3D print the whistle these days for a bit of nostalgia.

https://www.thingiverse.com/thing:2630646

Re: 2600.network Dialup Service

#12

Post by plapsley »

0xEF wrote: post #11
alberth wrote: post #9

FYI - 2600 Hz is a common handshake tone used in telco. Hence why “2600” is referenced. https://en.m.wikipedia.org/wiki/2600_hertz

Lots of fun history around 2600Hz for those too young to remember or not part of the phreaking crowd, a fairly extinct form of hacker these days. A phreaker going by Joybubbles was the first to exploit the tone by whistling. Later, a toy whistle in a cereal box was found to be able to produce the tone, leading to further exploit by John Draper, aka, Cap'n Crunch. You can 3D print the whistle these days for a bit of n…

Shameless plug for my book on the history of the subject, for those interested: https://explodingthephone.com/

Re: 2600.network Dialup Service

#13

Post by FrankPetrilli »

WarOnPrivacy wrote: post #3

How well can digital phone lines carry dial-up connections? It was an issue in the early days of digital lines - same as with fax. For fax we got v.34 and other improvements. IDK about dialup tho.

Quite well. I wrote a blog post about this a few years back: https://frank.petril.li/posts/dialup-adventures-1/

Re: 2600.network Dialup Service

#14

Post by chris0x00 »

plapsley wrote: post #12
0xEF wrote: post #11

Earlier quoted context omitted.

Lots of fun history around 2600Hz for those too young to remember or not part of the phreaking crowd, a fairly extinct form of hacker these days. A phreaker going by Joybubbles was the first to exploit the tone by whistling. Later, a toy whistle in a cereal box was found to be able to produce the tone, leading to further exploit by John Draper, aka, Cap'n Crunch. You can 3D print the whistle these days for a bit of n…

Shameless plug for my book on the history of the subject, for those interested: https://explodingthephone.com/

I enjoyed your book

Re: 2600.network Dialup Service

#16

Post by kQq9oHeAz6wLLS »

plapsley wrote: post #12
0xEF wrote: post #11

Earlier quoted context omitted.

Lots of fun history around 2600Hz for those too young to remember or not part of the phreaking crowd, a fairly extinct form of hacker these days. A phreaker going by Joybubbles was the first to exploit the tone by whistling. Later, a toy whistle in a cereal box was found to be able to produce the tone, leading to further exploit by John Draper, aka, Cap'n Crunch. You can 3D print the whistle these days for a bit of n…

Shameless plug for my book on the history of the subject, for those interested: https://explodingthephone.com/

I, too, enjoyed your book. Everyone go buy it, it's good.

Re: 2600.network Dialup Service

#17

Post by 462436347 »

alberth wrote: post #9

FYI - 2600 Hz is a common handshake tone used in telco. Hence why “2600” is referenced. https://en.m.wikipedia.org/wiki/2600_hertz

> FYI - 2600 Hz is a common handshake tone used in telco.

Was a common supervision tone used by the NA toll network prior to the introduction of SS7. Also practically everyone here knows (or ought to) that already, given that Jobs and Woz dabbled in making Blue Boxes for profit, and Blue Boxes produced 2600hz (along with the set of MF tones used to encode numbers). The fact you posted your redundant FYI with a mobile wikipedia link (phoneposting) is even more egregious.

Re: 2600.network Dialup Service

#18

Post by joecool1029 »

lxgr wrote: post #6
joecool1029 wrote: post #2

Sweet, I've been looking for one of these to test CSD calls out for the first time in like 20 years before GSM gets shut down on T-Mobile. There was one other service in Vancouver that probably shut down last year but I'm not sure data calls work internationally. EDIT: This is that service if you are a Canadian that wants to try it, https://www2.vcn.bc.ca/free-internet-access-via-dial-up/

Could you theoretically use an analog modem (or worst case an acoustic coupler) over IMS (VoLTE etc., which should all have at least some QoS), or are the jitter rates and codecs too bad for that (like they often are for Fax over VoIP on fixed lines)? I wonder if some of the networks that are continuing to offer GSM (usually via some core network emulations, as far as I understand, to make it more compatible with mod…

Theoretically, maybe. If you got a good 'HD voice' (higher bitrate EVS codec) call, it's possible you could negotiate and send a slower fax signal. No way on a full-rate or half-rate GSM codec or amr-nb though, just doesn't have the bandwidth, chops too much.

Even back in the early 2000's when I was using free nights and weekends with my T68i to make calls to a free dialup provider in new england (9600baud yea), my call would still drop every hour or so just due to signal hiccups.

(T-Mobile never enabled HS-CSD for 28.8kbps using more timeslots and it's unlikely my current rate plan will allow for CSD calls, but it doesn't mean I won't try, I still have an old sim card able to be used in 2G only phones, including that very same t68i which I tested last summer, still works.)

Re: 2600.network Dialup Service

#19

Post by 462436347 »

0xEF wrote: post #11
alberth wrote: post #9

FYI - 2600 Hz is a common handshake tone used in telco. Hence why “2600” is referenced. https://en.m.wikipedia.org/wiki/2600_hertz

Lots of fun history around 2600Hz for those too young to remember or not part of the phreaking crowd, a fairly extinct form of hacker these days. A phreaker going by Joybubbles was the first to exploit the tone by whistling. Later, a toy whistle in a cereal box was found to be able to produce the tone, leading to further exploit by John Draper, aka, Cap'n Crunch. You can 3D print the whistle these days for a bit of n…

> A phreaker going by Joybubbles was the first to exploit the tone by whistling.

Joybubbles (formerly Joe Engressia) specifically denied being the first. In this interview (no timestamp), he mentions having heard of others phreaking as far back as the 50s: https://www.2600.com/offthehook/mp3files/1991/off_the_hook__...

He also demonstrates whistling 2600hz during that interview, including doing so on one of the only US trunks in service at the time still using it for supervision.

> Later, a toy whistle in a cereal box was found to be able to produce the tone, leading to further exploit by John Draper, aka, Cap'n Crunch.

Not true, even he admitted, belatedly, that Denny Teresi introduced him to it:

> https://www.dailydot.com/debug/john-draper-beyond-the-little...

> Denny called me and told me about this whistle that blew the magic tone that disconnects long distance phone calls, and that he had a spare. He asked me if I could drive him to San Francisco so he could show me how it worked.

Re: 2600.network Dialup Service

#20

Post by endgame »

plapsley wrote: post #12
0xEF wrote: post #11

Earlier quoted context omitted.

Lots of fun history around 2600Hz for those too young to remember or not part of the phreaking crowd, a fairly extinct form of hacker these days. A phreaker going by Joybubbles was the first to exploit the tone by whistling. Later, a toy whistle in a cereal box was found to be able to produce the tone, leading to further exploit by John Draper, aka, Cap'n Crunch. You can 3D print the whistle these days for a bit of n…

Shameless plug for my book on the history of the subject, for those interested: https://explodingthephone.com/

Not surprised at all to see the author on here. Your book is marvelous. I demolished your book on a flight a few years back, thoroughly enjoyed it, and was sad that it was all over so quickly (both the book, and the phreaking era). It has a permanent home on my shelf next to "The Cuckoo's Egg" as one of my favourite old tech storybooks and I recommend it to anyone vaguely interested in the subject.
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