DTMF

 
 
 
 
 
What is DTMF?
 
  Dual-tone multi-frequency signaling (DTMF) is used for telecommunication signaling over analog telephone lines in the voice-frequency band between telephonehandsets and other communications devices and the switching center. The version of DTMF that is used in push-button telephones for tone dialing is known as Touch-Tone, was first used by AT&T in commerce as a registered trademark, and is standardized by ITU-T Recommendation Q.23. It is also known in the UK as MF4.

 
 
 

 

 
  Kits  
 

Ramsey TT7 Touch Tone Decoder

Amazon
https://www.amazon.com/Ramsey-DTMF-Touch-Tone-Decoder/dp/B0002NRLIO

28.95$

 
 
 
  IC  
 
NTE1690 IC-TELEPHONE DTMF DIALER
http://www.datasheetcatalog.org/datasheet/nte/NTE1690.pdf
 


CD22202 DTMF DCODER

http://matthieu.benoit.free.fr/cross/data_sheets/CD22202.pdf
   

 
  Projects  
     
 
Parale DTMF Decoder

http://electronics-diy.com/electronic_schematic.php?id=171
 




Basic Stamp II DTMF Dialer
http://www.quebecsoft.com/electronic/phonedialer.html


Basic Stamp II Script

 

     
 
 
 
  Software  
 
DTMF Keyboard

Aiglon DTMF
 



DTMF Decoder Modem edition

download/DTMFDecoderModemSetup.exe
   
 
 
 
 


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