home *** CD-ROM | disk | FTP | other *** search
-
- THE VIOLET BOX
- --------------
-
- Picture the scene ..... a payphone in a rural or suburban area, where
- all the telephone wires are overhead ..... next to the phone box is a
- telegraph pole with only one wire going down it ..... no prizes for
- guessing where it goes to. It might at first sight look like a prime
- site for beige boxing. However, there are obvious disadvantages to
- beige boxing here, like getting caught ..... thus, the violet box was
- created. Basically it is a way of emulating some beige box functions
- without the actual beige box, but it does have the same requirement of
- needing physical access to the line. *WARNING* The person on the other
- end may very well twig you are using this device. Only phone people you
- can trust.
-
- HOW TO MAKE IT
- --------------
-
- Get a 470 ohm resistor and a pair of crocodile clips. Connect a
- crocodile clip to each end of the resistor. That's it. I was going to
- call this the "yellow, violet and brown box" but I decided that name
- was too long, so I'll stick to just violet, because it sounds nice.
-
- HOW TO USE IT
- -------------
-
- First, you need a beige boxing point that is not too far from the
- phone. Clip one leg of the resistor on, leave the other end for the
- time being. Lift the handset, put in your money and key the number. As
- soon as it starts ringing out, it's action stations! Clip the other
- side of the resistor on and dash back to the phone. Depress the
- receiver rest for a few seconds, then let go. The person on the other
- end might have answered while you were doing this, let's just hope they
- didnd't hang up ..... anyway, you're now ready to talk. BUT every few
- minutes the phone will go 'dead' for a few seconds ..... it won't cut
- you off though.
-
- HOW IT WORKS
- ------------
-
- When a phone is on the hook it has a high resistance to DC and so
- hardly any current flows through it. (but it has a low resistance to AC
- because AC is what makes the bell ring.) When it is lifted, it has
- quite a low resistance, actually about 600 ohms. The 470 ohm resistor
- connected across the line fools the exchange into thinking the handset
- was up the whole time. It has to be disconnected for dialling, because
- pulse dialling (which is the only sort that works from payphones) works
- by opening and closing the circuit to stop and start the flow of
- current, so if the resistor was connected there the current would never
- stop flowing, and no dialling pulses would be sent. When you connect
- the resistor, the exchange just thinks there are 2 phones on the line,
- it can handle up to 4 so it's no problem. Then you hang up the
- payphone, now the exchange thinks there is just one phone; when you
- lift the receiver again, the payphone is sitting across a line with
- something already happening, so it just lets you listen to this. Of
- course, after a while it decides it's had enough of that, and tries to
- cut you off. But it doesn't manage it, because the resistor is keeping
- the line in use. The phone may be able to ring the exchange and report
- the "fault" but it can't even do that until after you have disconnected
- the resistor and made a getaway .....
-
- ALTERNATIVE USE
- ---------------
-
- If you also have a beige box, and access to an enemy's phone wiring
- outside the house (eg. the wires from a telegraph pole) you might like
- to try this use for the violet box ..... this can SERIOUSLY do people
- over ..... beige box from their line to anything, but the more
- expensive and embarrassing the service, the better ..... Australian
- kinky sex lines? the mind boggles ..... anyway, stick the violet box
- on, disconnect the beige box and run like hell.
-
-
- Brought to you by ...... . .... . . ... .....
- : :..: :.. :.' .:.......:.
- : : : :... : `. `... .:...
-
- disclaimer: this is for informational purposes only. no responsibility
- is accepted for any consequences of use or misuse of any information
- contained herein. any material whose source i have not acknowledged is
- believed to be my own - if it sounds like something you invented, just
- remember great minds think alike.