Made a recording via Google Hangout from the home phone which is VOIP.

If you look at the wave form, you can see the off on off on happening when the number is being dialed. So my guess as to it not using Dial Tones was correct. It must be a pain for someone with a rotary phone to call customer support, "dial a one to connect with a sales representative."

Well, this doesn't seem like a hard project at all. Just have to learn Arduino.

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