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Artifact ID:	2f5b125a00b85c8e98aedf18abe486db5567e8ca
Page Name:	P2Dgizmo
Date:	2012-12-02 23:05:41
Original User:	jfk
Parent:	e226a3792b52e35de4bafa27eb8fe696d80a0c3d (diff)
Next	755dfda390cef1ea1dfed962eb47809ab6b6a4fc

About

P2Dgizmo stands for Pulse to DTMF gizmo.

It is a device which teaches a Plain Old Telephone to "sing" modern DTMF.
The original ZIP-file can be downloaded here, and the author also has a demo video available on youtube

Notes -:- Software

Schematics

Note: the schematics as shown below will not work on European telephone lines.
because these lines switch polarity at the end of each call.
(Click on the image below to get a bigger picture)