An apparatus for reducing echoes which are generated due to signals induced to a handset connector in a telephone, includes a round-type handset connector cord arranged into a round configuration having a certain arrangement of the speech transmitting and receiving lines, and a connecting unit provided in the body of the telephone and having a differential amplifier for applying signals received to a transmitting unit by differentially amplifying the signals. Alternatively, the apparatus for reducing echoes includes a flat-type handset connector cord having the lines arranged in a certain order, and a connecting unit for connecting the speech transmitting and receiving lines in certain manner. Alternatively, the apparatus for reducing echoes and noises includes a flat-type handset connector cord having the lines arranged in a certain order, and a connecting unit connecting to the speech-transmitting lines and the speech-receiving lines in a certain manner.