How do I know if I missed a call and my auto reply answerback key is reset to REPLY?

Listen Again feature gives the V-Series panels the ability to listen to an incomingcaller by using the panel AUX Volume control pot. Press one tap the Aux pot andnow you can listen to the last caller message,Tapping the Aux pot two times, three times, four times,...and so on, now you can listen the previous callers.Listen Again is a clever ( cool/neat/nifty) feature.