[Data telecommunication in electric response audiometry (ERA)]

Telephone-lines suit for the transmission also of digital data along long distances. In ERA this technique is favourable. --because the application of a computer is necessary anyway and the primarily analogous data have to be transformed to digital ones anyhow and --because the expenses for purchase, maintainance and operation of the complete equipment stress practices and small hospitals disproportionately. To test "ERA via telephone" we established outstations, the peripheral measuring equipment of which was composed of commercially available devices (Digital Equ. Corp.); only the computer controlled stimulator originated from our own construction. The communication software between central and peripheral station was written in a way that the realtime feature of the registration was preserved and, therefore, only about 30 min are necessary to obtain the intensity-latency time-function (P6/JV) of both ears.