[计] asynchronous start-stop teletypewriter
fēi tóng bù qǐ tíng shì diàn chuán jī ㄈㄟ ㄊㄨㄥˊ ㄅㄨˋ ㄑㄧˇ ㄊㄧㄥˊ ㄕˋ ㄉㄧㄢˋ ㄔㄨㄢˊ ㄐㄧ