Well out of the box there were no system mailboxes like 800, 801 and 821 or ever 888. So I manually created them. The call handling just does not work properly no matter what I do. I have set up a couple Keyvoice systems and this is unique. I cobbled together a patch that kind of works for now. Basically 801 will not answer and play the right greeting even though the serial integration is working properly because I have soft keys and they work. 800 works because I changed the wait time to 1 then I transfer to another MB. For some reason it dos not play the system greeting that way. Tech support was stumped. So the vendor is shipping a new hard drive with a clean install and we'll see how that goes.