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How do i encode a digital signal into DTMF? i'm currently working on a dial alarm for a college project. i'm storing a phone number in a microcontroller (89c51 or a pic) and dialling that number. i currently have a CM8880 chip, but i don't know the circuit which encodes digital input into DTMF. coul...
- Thu Oct 21, 2010 4:43 am
- Forum: General Discussion
- Topic: HOME AUTOMATION USING PHONE (DTMF TOUCH-TONE)
- Replies: 6
- Views: 2103
Where & How DTMF details in my contact details used? In my N73, i see that I can add "DTMF" details to each contact. I would like to know where and how this DTMF info is used? I understand DTMF is used for identifing which key was pressed, please tell me some use cases. _____________________________...