Have anyone experience on an iDCS28D phone set that the message waiting light keep blinking even though there is no voicemail message. I also thought maybe someone turned on the message waiting light by mistake, so I pressed feature code 42 and the extension number to try to turn it off, but it didn't work. The phone just said 'No Message'. Anyone has any idea?

*Phone System: iDCS100

One of my OS7400 System Extension using iDCS28 phone also having same issue... Initialized DB but still the same...