What is a telephone?

A telephone is a device used for transmitting sound over long distances by converting sound waves into electrical signals and then back into sound waves at the receiving end. It allows people to communicate with each other by speaking into a microphone and listening through a speaker or earpiece.

A telephone is a device used for transmitting and receiving sound, typically consisting of a handset with a microphone and a speaker, connected to a base station by a wire or wirelessly. It allows people to communicate verbally over long distances in real time.