TUCoPS :: Phreaking Boxes - Legal Line Gadgets :: 1box.txt

1.box - Prevents extension phones from listening to your conversation

 F~SA new box? By boBbitha Barry
03-JAN-1993
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                                boB Textfiles
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
 1.BOX is a file about a new box that does something useful.
This box doesn't do anything stupid, like add a hold button to
your phone. It has a real and definite use.
 I had to name my box with a number because all the good colors
are used up by people who make stupid boxes that don't work. My
box works, and hey, it's actually useful!
 The 1.BOX is designed to prevent other people from listening in
on your telephone conversations. Here is an example of what it
does.

 withOUT 1.BOX:

YOU: Yeah, I'd like three large cheese pizzas delviered to...
MA!: Hey! What are you doing.... Just wait til your father...

 WITH 1.BOX:

YOU: Yeah, I'd like three <click.> <bzzzzzzzcccht!>
MA!: <bzzzzzzzzcht!>

 As you can see from the example, the 1.BOX introduces a
tremendous amount of static into the line when another phone is
introduced into the circuit. This only works on your end,
however. Nothing happens if another phone is picked up at the
other end.

 The 1.BOX does not detect zero resistance taps. You'll
understand why after I explain how it works in detail.

 How it works: (simplified)

 The 1.BOX relys on the fact that most phones stop working
properly after the line voltage falls below a certain level.
Actually, it is not the 1.BOX that introduces static into the
line, but your malfunctioning phone(s)

 Schematic:

R  Ä(Y)ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
J  Ä(G)ÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿   ³  a. Light emitting diode
1  Ä(R)ÄÄÄ¿      ÚÄÄÄ´   ³  b. Potentiometer (8k or 50k)
1  Ä(B)ÄÄ¿³    zÄÙ   ³ a.³
         ³³ b. zÄ¿   o   ³  RJ11 is an RJ-11 plug or socket.
         ³³ ³  z ³   ³   ³
         ³³ ÀÄÄÙ ÀÄÄÄ´   ³
         ³³ÚÄÄÄÄÄÄÄÄÄÙ   ³
         ³³³ÚÄÄÄÄÄÄÄÄÄÄÄÄÙ
         ³³³³
         ³³³³
         ³³³³
         RJ11

 Explanation:

 Okay. You put two RJ-11 sockets on this thing. Then you get a
very short RJ-11 cord. Plug one end into the phone jack, and the
other end into the 1.BOX. Then take your phone's cord and plug
that into the 1.BOX. Adjust the pot until your phone makes
static or goes dead. If it just goes dead, then try the other
value of potentiometer. If there's static no matter where the
pot is set to, or the LED won't light up brightly, then you need
to turn the 1.BOX around. (ie, plug the phone into the end you
had the short RJ-11 cord in and vise versa.)

 Testing it:

 Onece it is adjusted, pick up the phone again. You should get a
dial tone. Loud and clear. Go pick up another phone in the
house. It should generate enough static to mask off the dial
tone completly.

 A switch can be added to the circuit to connect the two green
wires together before the LED and POT thus making it possible to
disable the 1.BOX (ie, when using your modem)

 Operation

 If optional switch is used, make sure it is in the off
(non-shorted) position. Pick up the phone. LED should light. If
another phone in the house is picked up, or someone is
monitoring your line using a BUD box, the light should dim
almost completely, and a great deal of static should come on the
line, masking off your voice.
 The light should blink when the box is active and the phone is
ringing.

 Other crap:

 This device doesn't work in all areas with all phones. It's
almost impossible to connect to wall phones, and it doesn't
allow some rotary phones to dial correctly. (who knows why).

 How it works: (in detail)

 It works by reducing the amount of current and voltage entering
your phone. Usually there's about 30 volts. Most phones work
just find with only 12! The 1.BOX Reduces the curent and voltage
to the bare minimum needed to make your phone work right. When
another phone is introduced, the voltage falls below the
minimum, and your phone starts to make alot of static. If you
have a lighted number pad, it will dim almost completly. When
the other phone is removed, operation continues as normal.

-boBbitha Barry

~@EOF


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