OScoder

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About OScoder

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    Will I break 10 posts?
  1. I've got a really weird UK toll free number - 0800 181 005. I can't figure out the point of the one "test" at all. Here's what it does: Answers with "You have reached the BT Global Managed Voice Network", on repeat If you press 1 at any point, it says "option 1" and hangs up If you press 2 or three at any point, it says just "two" or "three" respectively, and hangs up If you press any number OTHER than 1, 2, or 3 while the initial message is repeating, it says "DTMF Check, please press either 1, 2 or 3" At this point 1, 2, and 3 do the same as normal. Pressing any other button drops it back to repeating "You have reached the BT Global....", it will do this a few times then hang up. If you try pressing any more digits, it hangs up right away If you don't ever press anything, it repeats the first prompt for about half a minute, then repeats the "DTMF Check..." one twice, then goes back to "You have reached...." again, then hangs up That's all I've been able to get out of it and I've explored it pretty extensively. It also responds to a few other tones A,B,C,D tones all work, and drop you into the "DTMF Check..." menu The following UK tones do the same - Congestion (400hz on and off), Pay tone (400Hz, on and off shorter and faster), Pay Phone Recognition (1200hz followed by 800hz) - for an explanation of these tones see http://www.etsi.org/deliver/etsi_tr/101000_101099/10104102/01.01.01_60/tr_10104102v010101p.pdf A bluebox/MF "7" is treated as a three - I guess because the frequencies are pretty close? (700hz & 1500hz for the 7) I've tried throwing a log of different tones at it - red box tones, MF tones, the works. Does anyone have any idea what the point of the is? Or suggestions for other things to try? (also, should I give this it's own thread or is here fine?) Recordings attached. Thanks for your help! OScoder option1.wav 2.wav nada.wav
  2. Also, faxes always try to renegotiate, whereas modems just try once...
  3. A MITM attack wouldn't work for these two reasons: First, the data is sent using individual photons. That means one photon for each bit of data. Now, photons are what physicists call 'elementary particles'. This means that they cannot be split into two. Hence it would be impossible to split the data-stream into two, and observe that way. Second (and this is the most important part), it is very complex observing something so small as a photon - which weighs, litteraly, nothing. There's a lot I could go into here, but all you need to know is that you can't observe the 'quantum state' of a photon, without risking changing it. This means that you could not simply observe and re-send the data, without (unintentionally) changing it, so an MITM attack is not possible. If you want a better account of how this works, I recommend reading 'The Code Book' (by Simon Singh), which is very well written (and easy to understand). Hope this helps :-), OScoder
  4. Technically, it isn't legal to make backups in the first place! (according to an article I read about the DMCA in a computer mag). The only reason backups of software is legal is because it is written into the license. HOWEVER, for software, you buy the right to use it rather than the software itself. Doesn't this mean that getting a pirated copy is ok, so long as you brought the original? (just like its ok to download the rom image of a game, so long as you brought the original?)
  5. Have you considered using iWar? It doesn't support SIP, but does support VOIP over the IAX2 protocol.
  6. Here's some VOIP numbers, from the npr.org VOIP: (via sipbroker) *8978810013 --> echo test *8978815279 --> radio stream *8978815722 --> radio stream - bbc world service? *8978819239 --> chicago public radio *8978819268 --> ??? - possibly radio stream *8978819287 --> radio stream *8978819692 --> radio stream
  7. Lol, I just rang this and someone answered! Are the VMB's no longer available?
  8. That question is answerable (at least in part) by public knowledge. I think most of BT's network is made up by 'SYSTEM X' and 'SYSTEM Y' exchanges. System X was developed first (by a company named marconi, but I remember hearing recently they had gone out of business), after that came system Y (named that so as to continue the systemX trend, actuall name for the exchange is the AXE10 (developed by erricson)). BT started buying exchanges from erricson in the hope that the competition would lead to lower prices. I recall also reading once that AXE10's are more advanced, yet BT only deploys the cheapest software packages, making them about the same. As to how these switches work, you can find out alot about AXEs from erricson's website. Also check out the operation and maintainace manuals Here Hope this helps, and please correct anything I have wrong, OScoder