I have a new job in an office and have an AVAYA 9600 phone at my desk. I need to set up my voice mailbox, but can't figure out how to do it. To access my mailbox it asks for a password that I don't know or have access to. How do I clear any previous information/passwords on the voice messaging system and set up my own mailbox with message and my own password? Thanks, Kathy Evans Intermountain Medical Center Salt Lake City, UT