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A comment on Installing a payphone in my house. Parent comment

Re:Installing a payphone in my house by Slartie on Friday June 03, 2022 @02:46AM (#31605031)
> Pay phones mitigated this in a low tech way - by software muting the handset.

So does this mean that there was a dedicated second microphone hidden somewhere within the payphone body, that would continue to record the sound the coins made?

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Re:Installing a payphone in my house by genewitch on Friday June 03, 2022 @06:45AM (#31606622)
The coins weren't recorded, it was just a short tone that indicated 5¢. A quarter was five quick tones. A dime two.

I used to mess with the proctor test set (dialing 117 in the US at least on GTE) and only ever convinced it I inserted a nickel even with many tries using a digital recorder or a computer speaker.

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Re:Installing a payphone in my house by baobrien on Friday June 03, 2022 @01:41PM (#31611398)
In early 3-slot North American payphones, there literally was a bell that the coins struck and a transducer inside the payphone body.
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