Processors/DSPs 
Implementing a digital answering machine with a high speed 8bit microcontroller
Keywords: microcontroller dsp dtmf answering machine ivm1700 device
[Summary of tips] 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.View the PDF document for more information.|
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