Of, relating to, or being a telephone with which the user places calls by pressing push buttons that generate and transmit tones of differing pitch, these tones corresponding to the digits of the number being called.

• 按钮式电话机的（有关）一种使用者通过按下某些按钮以接通电话的电话机的，这些按钮可产生并传播不同频率的声音，对应所打号码的数字