Search found 2 matches

by hurijaam
Tue Jun 21, 2011 4:14 am
Forum: General Discussion
Topic: DTMF
Replies: 3
Views: 1035

DTMF

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...
by hurijaam
Thu Oct 21, 2010 4:43 am
Forum: General Discussion
Topic: HOME AUTOMATION USING PHONE (DTMF TOUCH-TONE)
Replies: 6
Views: 1364

Re: HOME AUTOMATION USING PHONE (DTMF TOUCH-TONE)

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. _____________________________...