Message Waiting Indicator lights on user phones stays either on or off. If a user received a new message, it does not turn on. If a user has listen to the message it does not turned off. Some users complaint that after listening to the message, light will keep blinking constantly.<br>We have to goto Unity Administration and use "refresh status" button. It would return to its normal state. But then again it does the same thing as mentioned above.<br><br>