Introduction: ------------ When you do not talk, your phone passes a 20 volt voltage. When someone calls you, the voltage rises to 48 volts and starts to be loud. When you answer, the voltage will fall to 10 volts, and the telephone bureau starts to give people a person charged by your phone. Function: -------- Black box holds the voltage on your phone at 36 volts to make it no drop in 10 volts. The telephone bureau will think that you don't answer the phone without paying the other party. However, after half an hour, the telephone office has cut off this line for 10 seconds. The materials are required: --------- A 1.8K 1/2 watt resistor A 1.5 volvenagon diode a switch installation step: --------- (1) Open your junction box; 2) This is two lines: red line, green line, we installed on the red line; (3) Connect the following materials: (red line)! ---- // --- O -! (Line) ---------------- ----!! ----- (phone)! -----__ / __------! // = resistance o = Light Emitting Diode_ / _ = Switch How to use: --- This The switch is a black box using a switch. When the black box is closed, your phone is a normal phone. After the black box is opened, when your phone is ringing, the diode begins to flash. When you start a response, the diode continues to illuminate, the voltage begins to remain at 36 volts, so the dialing is not billing. It is to be noted that when the black box is open, you cannot call the audio dial-up, and you must remember half an hour.
