How does it work? When you go off hook you get a dial tone, and you hear a short beep every ~2 sec. you may dial, and talk/listen.
When it receives a 16 kHz signal, the coin relay opens for 1x 5kr or 2x 1kr to collect. The coin runs trough valditor 1. (This sorts on size, and stops magnetic washers. Rejected coins goes to return tray, or stuck at magnet until released by hook. If OK it contains to validator 2. Here some electromagnetic device read OK or not. Coins are collected. If the coin are not OK, you get a beep, and may within short time ad a valid coin. If not, a new beep, and the unit goes off the line.
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