Telecommunications device for the deaf
（重定向自Telecommunications devices for the deaf）
![Miniprint 425 TDD. The acoustic coupler on the top is for use with telephone handsets. The printer records the conversation. The specific GA and SK keys allow for speedier use of common abbreviations.](/Images/godic/202502/15/425tdd3215.JPG")
![AT&T TDD 2700](/Images/godic/202502/15/Jrb_20080809_att_tdd_27003215.jpg")
A Telecommunications device for the deaf (TDD) is a teleprinter, an electronic device for text communication over a telephone line, that is designed for use by persons with hearing or speech difficulties. Other names for the device include teletypewriter (TTY), textphone (common in Europe), and minicom (United Kingdom).