Telephone

A telephone is an electronic device that allows for the transmission of voice or data between two or more people over a distance. The basic principle of a telephone involves converting sound waves (like those produced by a speaker's voice) into electrical signals, which can then be sent over a network (such as telephone lines, fiber optic cables, or wireless signals) to a receiver. The receiving telephone converts these electrical signals back into sound waves, allowing the recipient to hear the original voice.