I heard a vendor tell a customer no, then sold them an Audix.... It seems like it would work, but there could be issues with the voice mail waiting lights. It silly to say goahead and try it (your money not mine), but if the idea was just to get more mialboxes, it's better to go with a merlin messaging, (200 mailboxes), and have a solution that you know works. If you already have the card, then it wouldn't hurt to try. I'ver heard that you can only have one integrated voice mail system per Legend / Magix.
Pepperz@charter.net