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Looking for telephone dialer design

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pokiri

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I need a telephone dialer reference design to be interfaced to a microcontroller. Where can I get it?

Thanks
 

jhonny_yang

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On 2002-03-27 07:02, pokiri wrote:
I need a telephone dialer reference design to be interfaced to a microcontroller. Where can I get it?

Thanks
find in google or webring use key +dtmf +8051 or +dialer +8051
 

Rayengine

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Many design has used microcontroller to act as dialler. It can use 5 bit or 6 bits port to provide a D-to-A inteface and output as the necessary timing and tolerance. I remember that National Semiconductor has article talking about the software implementation.

Bye
Rayengine
 

diegor747

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thanks!!! for this link


diegor747 :smile:
 

algilsan

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check this

8) Hello, for your porpouses, you can find numerous dtmf dialers from some manufactures, but may be hard to get them. Instead if you have a bit litte control on uC, you can use a small PIC, and the MT8870 DTMF tone decoder. So, you use the pis as tone dialer anf MT8870 as tone decoder to make a complete telefon dialer.

Be sure, it will be much easy and cheap than buy a tone dialer

Chek this file, it's a complete tono dialer/decoder, with a pic and source code

I hope you be usefull
 

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