58 lines
2.1 KiB
Plaintext
58 lines
2.1 KiB
Plaintext
Black Box Plans by The Jolly Roger
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Introduction:
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------------
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At any given time, the voltage running through your phone is about 20
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Volts. When someone calls you, this voltage goes up to 48 Volts and rings
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the bell. When you answer, the voltage goes down to about 10 Volts.
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The phone company pays attention to this. When the voltage drops to 10,
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they start billing the person who called you.
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Function:
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--------
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The Black Box keeps the voltage going through your phone at 36 Volts,
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so that it never reaches 10 Volts. The phone company is thus fooled
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into thinking you never answered the phone and does not bill the caller.
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However, after about a half hour the phone company will get suspicious
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and disconnect your line for about 10 seconds.
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Materials:
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---------
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1 1.8K 1/2 Watt Resistor
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1 1.5V LED
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1 SPST Switch
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Procedure:
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---------
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(1) Open your phone by loosening the two screws on the bottom and
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lifting the case off.
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(2) There should be three wires: Red, Green, and Yellow. We'll be working
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with the Red Wire.
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(3) Connect the following in parallel:
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A. The Resistor and LED.
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B. The SPST Switch.
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In other words, you should end up with this:
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(Red Wire)
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!---/\/\/\--O--!
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(Line)-----! !-----(Phone)
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!-----_/_------!
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/\/\/\ = Resistor
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O = LED
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_/_ = SPST
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Use:
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---
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The SPST Switch is the On/Off Switch of the Black Box. When the box is off,
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your phone behaves normally. When the box is on and your phone rings,
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the LED flashes. When you answer, the LED stays on and the voltage
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is kept at 36V, so the calling party doesn't get charged. When the box
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is on, you will not get a dial tone and thus cannot make calls.
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Also remember that calls are limited to half an hour.
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------------Jolly Roger
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p.s. Due to new Fone Company switching systems & the like, this
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may or may not work in your area. If you live in bumfuck Kentucky,
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then try this out. I make no guarantees! (I never do...) ----JR
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