The only reason I can think of for Dialup on a product of this scope is to have a OOB dialup connection so I can get to the firewall if it is under attack or unnavailable on the net for some reason.
Another real good reason would be to have dialup to an internet connection as a failover for a down broadband connection, so we could get out to the net (albeit slowly) to do diagnostics, etc. I've wished for this many times. . .
