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Why a pair of modems is required to transmit the digital signals over a long telephone wire Why not a single modem?
Wiki User
∙ 11y ago
first modem will be modulating electrical signals in the voice frequency range of a telephone channel. These signals can be transmitted over telephone line and demodulated by another modem at the receiver side to recover the digital data.
Wiki User
∙ 11y ago
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Why is it necessary to digitize voice signals?
To minimize the distortion of analog signals during transmission Because digital lines transmit signals more efficiently across distances than analog lines Because many telephone networks are moving over to digital interfaces
What are strands of glass tha transmit digital data by pulses?
Fiber optic cables transmit digital signals as pulses of light.
What kind of waves do cellular telephone use to transmit and signals?
microwaves
Computers send and receive data in the form of signals?
Computers_send_and_receive_data_in_the_form_of_signals
What are three ways microwaved are used?
They are used to transmit data, TV signals, and telephone signals. They are also used in ovens and radar.
What converts analogue signals to digital signals for transmission over telephone lines?
Actually you have this backwards, the telephone lines can only carry analogue signals (voice band, 20Hz to 3KHz) not digital signals.The device that converts digital signals to analogue signals for transmission over telephone lines is called a phone MoDem(this stands for phone modulator demodulator). At the opposite end of the line it of course converts the telephone analogue signals back to digital signals.
What is the transfer of digital or analog data using digital or analog signals?
The transfer of digital or analog data using digital or analog signals refers to the process of transmitting information from one device to another, either through digital signals or analog signals. Digital signals are electronic signals that represent binary data, while analog signals are continuous signals that represent continuous data. The method of transfer depends on the type of data being transmitted and the technology being used for the transfer. For example, digital data can be transferred using digital signals through a computer network, while analog data can be transferred using analog signals through a telephone line. Regardless of the method used, the goal of the transfer is to accurately transmit the information from one location to another.
Why do most networks transmit digital rather than analog signals?
Digital signals are capable of carrying more information than analogue signals because digital signals make use of the bandwidth more efficiently by closely approximating the original analogue..
What are the wires for on telephone poles?
Quite variable according to local practice. May include AC power, telephone, and/or TV cable service.
What is a modems purpose?
1. To MODULATE (convert) the digital signals from a computer into analogue signal to enable it to be carried through the telephone line. 2. To DEMODULATE (convert back) analogue signals from a telephone line into digital signal to be used in computer.
What kind of waved a cell phone telephone used to transmit and receive signals?
Mobile phones transmit and receive date and calls in the microwave section of the radio spectrum.
What is meant by modulation and demodulation?
The full form of Modem is Modulator-demodulator. Modulation is process of converting the digital computer signals to analog telephone signals. Demodulation is the opposite conversion, analog to digital.
