detecting call progress tone & Special Information Tone

[joelian]

hi, i'm julian from indonesia. i' doing my final project right now, i'm trying to detect the call progress detector & Special Inforation Tone from the telephone line using LM567 to activate a bell on my system. is there any one of you can help me to do the schematics of lm567 to detecting the telephone tone????????

 

[Hero999]

Do you know what frequency the tone is?

Look at the LM567 datasheet, it will show you how to calculate the frequency.

Lastly, do your own work, don't expect us to do it for you!