| 摘要 |
Device for exchanging information with a server centre telephonically, of the type comprising: - an information transmission or transmission/reception system A; - a server interface B, characterized: - in that the transmission or transmission/reception system is composed of a board comprising at least one touch-sensitive keypad; a coding unit; a piezoelectric vibrator or loudspeaker; an electrical power source; - in that the server interface comprises a microprocessor 21; a set of RAM and EPROM or ROM memories 26, 27; a speech synthesiser 38; at least one system 32-37 for encoding and decoding the frequencies used on the telephone network; a system for detecting communication set-up 28 and hang-up 30, all these various elements being connected to the microprocessor 21. <IMAGE>
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