My predecessor before he left forwarded his extension to my extension. I was on the phone the other day when someone must have called his extension and left a call back number. Now my phone's message light keeps blinking, but when I hit the Message button, it displays NO MESSAGES, my phone is a Mitel Superset 4025. I read about creating a multi line device and program the Prime DN into the Voicemail Hunt Group and set it's COS to DO NOT DISTURB=Permanent. Does that apply to my situation with the phone forwarded?