How to stop the alert when a call is unanswered on the Doro Liberto 820 Mini?

I have a Doro Liberto 820 Mini mobile phone and I have found that if I don't answer a call, my Doro plays a tune for some time after the caller has aborted  the unanswered call.  (I assume this is some sort of alert/notification).

Is there a way for me to stop this alert/notification, which plays after the caller has aborted the call.

Hi rob. Sorry but according to the manual, there's no other way to do it. Looks like you really need to put your phone in silent.

Hi Cal

Thanks for the suggestion.  Tried your suggestion but it stops the phone from ringing when receiving a call or a text.

Try turning this off: Go to Settings -> Sound & Volume -> Alert Type.

Let me know if that works.

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