I am working on a sound performance involving a telephone.
I want to use the telephone to generate DTMF tones without being connected to a phone line.
Is it possible ?
How ?


Yes, would have to supply the 'Battery' on the line and should work. BUT have you thought about generating the DTMF via arduino? Here is a cool recreation of a blue box, and does all kinds of tones as used on many different systems-
http://www.instructables.com/id/Arduino … roduction/
  I had the same thoughts, and plan to build this. Really dig some of the beats by ElmerCat
So this might work for you without the second phone-
http://www.instructables.com/id/Simple- … ed-Phones/

Last edited by yogi (February 8, 2016 12:07 am)