Awesome, thanks Dalavar. The reason I was trying to set this on 998 is that calls were getting through to that mailbox and I wanted to stop that. I believe my problem was the 2 port limitation of the TVS50 - it was handling 4 CO lines and we sometimes get incoming calls on all 4 at a time. For the time being I have set the TVS50 to only handle 2 CO lines but I am looking to upgrade to a 4 port unit.