Question

Which type of signals travel over telephone lines​

Answer 1

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Computers transmit digital data, expressed as electrical impulses, whereas telephones transmit voice frequencies as analog signals. To transmit digital data, the sending modem must first modulate, or encode, a computer's digital signal into an analog signal that can travel over the phone line.

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Answer 2

Answer:

Computer transmit digital data expressed as electrical impulses whereas telephones transmit voice frequencies as analog signals. To transmit data the sending modem must first modulate or encode a computer's digital signal into an analog signals that can travel over the phone lines.

Explanation:

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