Abstract: A phonetic conversation method using wired and wireless communication networks includes: receiving, by a voice input unit of a phonetic conversation device, a voice that is input by a user; receiving, by a wired and wireless communication unit of the phonetic conversation device, a voice that is input through the voice input unit and transmitting the voice to a mobile terminal; receiving, by the wired and wireless communication unit, an answer voice that is transmitted from the mobile terminal; and receiving and outputting, by a voice output unit of the phonetic conversation device, a voice from the wired and wireless communication unit.