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Tele-Communication (Telecom) Terms Glossary and Dictionary
Coin Return Tone
Coin Return Tone is audible tone of telephone system over a coin recording-completing trunk informs the originating toll operator that the local operator or coin control circuit has returned the change when the connection is not completed (also called coin-refund tone). Coin Return Tone is a single 5 to 1 second burst of High Tone.
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