The Analog Display Services Interface, normally abbreviated to ADSI, is a Bell Communications Research (Bellcore) standard, which defines a protocol for data transmission over a voice-grade telephony channel. Devices such as a central office or interactive voice response (IVR) system that can generate ADSI data can communicate with ADSI compatible telephones. These telephones have some processing capability, an area of read/write memory, a display screen, navigation keys (to scroll information up, down, left, and right), and softkeys. The softkeys can be programmed to perform different functions at different times.
Using the ADSI component of Blueworx Voice Response for AIX, you can create scripts to control ADSI telephones.