This is a very gud forum for hobby ckts... i nned the circuit for converting DTMF caller ID into Bellcore fSK (us based caller id )format. can anyone help me out with circuits for such converter
This is a complicted project since you will need to decode DTMF (use 8870 to do that ) read it into a ucontroller and have the ucontroller generate Bel202 protocol data using the uart ,
Send the data to XR2206 FSK modulator and you got a sulation !
What are you trying to do? Whey covert DTMF to FSK? cant you use the DTMF and thats all?
Also have a look at this site: http://www.discovercircuits.com/T/telephone.htm
They have lots of circuits for the Telephone and maybe one of them will give you an idea to overcome your problem.
Good luck.