Hacking Modem

Modem stands for modulator derived from demodulator. Generally this tool is used to convert analog signals to digital and vice versa. Technique described here is also about hacking modem. Tutorials can be downloaded, the previous will be explained on the functions and the type of modem first. For example, to connect between two computers via dial-up using a phone line to access data over the network or the Internet. Modulator according to wikipedia Indonesia is the part that converts the signal information to the carrier signal (Carrier) and is ready to be sent, while understanding the demodulator is the part that separates the information signal (which contain data or messages) of the signal (carrier) that accepted so that information can be accepted well.

Type of modem

Short for modulator and demodulator. Modem function to enter information into the carrier wave signal; contrast signal demodulator retrieve information from the combined signal. Modem comprises of: 1. Amplitude Modulation (AM), which is an electronic circuit that changes the amplitude of the carrier wave in accordance with the amplitude information signal. 2. Frequency Modulation (FM), which is an electronic circuit that converts frequency carrier wave in accordance with changes in signal frequency information. 3. Pulse Modulation (PM), the pulse modulation system can be divided into:

a. PAM (Pulse Amplitude Modulation), amplitude of pulse wave varies in accordance with changes in the information signal.
b. PPM (Pulse Position Modulation), the pulse position changes according to the signal phase angle information.
c. PWM (Pulse Width Modulation), the distance between the pulses varies in accordance with changes in the frequency of the carrier signal.

4. Digital Modulation, comprising:

a. FSK (Frequency Shift Keying), the shift pulse of the carrier in accordance with the binary number (an analog signal that 'encoded

1. Analog modem is a modem that converts analog signals into digital signals

1. ADSL Modem

ADSL modem (Asymetric Digital Subscribe Line) which enables surfing the Internet and using an analog phone simultaneously. It is very easy, for ADSL is given a device called a splitter or divider line.

Splitter positions are placed in front when the incoming phone line. This means you can not branch to the ADSL modem line with direct sound. Splitter useful tool to eliminate interference when you're using ADSL modem. With Splitter both can run simultaneously, where you may be able to answer and call someone with a regular phone. On the other hand you can still connect to the Internet via ADSL modem.

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