The Phone Ringer circuit will work with any ordinary phone including older bell ringer types. The circuit rings the phone in a completely realistic manner until someone answers. When the receiver is lifted the user hears the audio of your choice. It might be another telephone, a tape recording, a favorite talk radio show, a fake busy-signal, a scanner tuned to weather or police, cues for the actor who forgot his next line, or whatever audio source strikes your fancy. [...]
Read more source:
http://www.techlib.com/electronics/telephone.html
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This entry was posted on Friday, July 10th, 2009 at 9:09 am and is filed under Telephone.
