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Implementing a digital answering machine with a high speed 8bit microcontroller

Posted: 08 Apr 1999 ?? ?Print Version ?Bookmark and Share

Keywords:microcontroller? dsp? dtmf? answering machine? ivm1700 device?

This paper presents a design that replaces DSP chips with a general-purpose high-speed 8bit microcontroller. Telephone functions such as caller ID, DTMF detection, Bell 202 detection, and Ring detection are implemented in software on the microcontroller.

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