I would echo the setiment that you want to get a dedicated terminal
server.  The Xylogics terminal servers from Bay Networks and the Livingston
Portmasters seem to be good candidates.  We have a fleet of Xylogics
terminal servers here, and they are extremely reliable.  Best of all, the
access control software runs beautifully under NetBSD, so you can use
NetBSD to perform network access control.  Also, for the Livingstons, I
have compiled and run radiusd under NetBSD, so again, your NetBSD box can
act as the control sentinel.
-Brian

On Jul 22,  4:35pm, Mark Willey wrote:
} Subject: Re: What is the most modems that have been hung off a i386 NetBSD
} John Maier writes:
} > 
} > I am working on setting up a bank of modems for mass access to our =
} > network for remote users.  What is the maximum number of modems that =
} > can, or have, been hung off of a i386 NetBSD machines?  What did you =
} > use.
} > 
} > I'm looking at 16-32 modems.
} 
} You can either get a huge array of multiple-port serial cards, or, get a
} "terminal server".  I would *strongly* suggest you get a dedicated terminal
} server.
} 
} Mark
} 
>-- End of excerpt from Mark Willey