Touch-Tone
adjective trademark uk/ˈtʌtʃ.təʊn/ us/ˈtʌtʃ.toʊn/
（电话机）按键式拨号的
a brand name for a type of phone that produces different sounds when the different buttons with numbers on them are pressed
You can call your bank and perform a transaction using a Touch-Tone phone. 你可以用按键式拨号电话给银行打电话进行交易。