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Found 5 results

  1. Back in 2007, I designed a blue box for use with my ProjectMF server, a telephone PBX switch that allows phone phreaking in a manner similar to the old days of in-band signalling - MF and SF audio tones. That blue box was based upon the PIC 12F683 8-pin DIP microcontroller. Phil Lapsley ("Exploding the Phone") designed a PCB board for it and many aspiring phreaks have built the circuit over the years. One issue with the original code was that it was written in PicBASIC Pro. PicBASIC had a "tone" command that could produce two simultaneous tones if a 20MHz oscillator was used. However, the tone generation never sounded quite right. David Griffith, a vintage telephony and computer buff, decided to re-write my code in C. He followed the same general design principles as I used in my 2007 box, but added some very impressive features and - most importantly - the tones sound great! The code now runs on a modern 8-bin ATTINY85 microcontroller. Dave has also designed circuit boards for the chip and circuit. However, I found the circuit is straightforward enough to build on protoboard, which allowed me to produce this replica of the blue box featured on the first page of the famous October, 1971 Esquire magazine article which popularized phone phreaking. Dave's code may be found at: Manual, schematic and and precompiled .hex files at: df99
  2. If anyone knows any single tone phreaking frequencies, please post them below. (examples) 2600hz-seized trunks back in the day 1100hz-Fax presence (yet to be explored)
  3. I have completed a 2600hz whistle for the TRS-80 model 100. It emits 2600hz and has a impressive binrev bbs ansii art. IMG_1335.MOV
  4. A very simple command line bluebox/tone generator I wrote in python on top of pyo synthesizer library. Mostly written for the education, but it will allow you to bluebox project mf if you are amongst those of us who would like to bluebox, but do not have the extra time to build one from an arduino/PCB. What I do is run the audio from from an earbud to the receiver, and it works beautifully.
  5. yoyoyo There's a ninjaconf (bridge) setup for defcon week. You can reach it a couple of ways. The public numbers (free call from payphones) are the following: 8553692600 //I'll keep the others private And the DIDs: 213.260.9116 907.331.4360 The catch is, you gotta chirp chirp to get in.. However, I found out earlier that iphone5's are not passing the 2600hz properly for some reason.. So you cant get in from one of those.. I messaged woz about it lol. (remember, not all phones were created equal) This is an open bridge for general use through to next week, so fear! And in case you're wondering, projectmf was not used in this.. This is SIP with a modified dsp Peace! /eof