I have a DK280 r1 system [inherited ] with mixed analog and digital sets,IVP8 [tan ] mail.

1- analog set is getting intermittent message waiting lights.Sometimes it lights and sometimes not.

He had 5 messages with no lights then I went away and came back and message light was lit on recent message.

I'm thinking change the phone to digital set and move ext to digital port .

any ideas ? I'm also thinking someone has his password and is listening to his messages and saving them.