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audioguru
Nobel Prize Winner
Canada
4218 Posts |
 Posted - Mar 24 2005 : 11:03:49 AM
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I have never seen a phone with an "OK" button.
In my country we answer a phone call by going off-hook or turning-on the speakerphone. See, every country is different!
When the other end answers the call that I have dialed, the ring-back tone that I hear during their phone's ringing, stops. I don't remember but when they answer, maybe the phone company gives a momentary disconnection to my phone's DC, or momentarily reverses its polarity.
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Feedback signal
