D-Phone Yellow Light Indicator Is Stuck
Digium phone is stuck showing the yellow light indicator for screening voicemail even though no message is being left. This issue occurs when the phone misses communication that voicemail has been completed or the call was ended before a voicemail was left. This is a feature that by default is set to ON in firmware versions 5.8.5+
To disable this feature:
Go to Setup
Manage and modify an extension
Navigate to permissions and open Use Voicemail Features
Set Screen Voicemail to OFF