*BSD News Article 57787


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From: dr@ripco.com (David Richards)
Subject: Re: Alternative to Expensive Multiport Serial Boards...?
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Date: Tue, 2 Jan 1996 01:12:02 GMT
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In article <4c7oep$riv@news.voicenet.com>, Marines! <Marines!> wrote:
>
>Would this idea work?

Only if you're cheap, and ignore the historical evidence that internel
modems tend to be less reliable and have shorter lifespans than external.

>Let's say 4 internal modems. For this setup, you need a motherboard,
>8Megs RAM, case, e-net card, and a floppy drive (oh yeah, you need the
>modems). Shopping mail-order, you're looking at $400-500.

That works out to $100/port or more.

>What am I missing here? Networks that can install a *free* Unix OS on
>a bunch of low-end machines really have no need for multi-port serial
>cards. They can setup a more reliable, cheaper dialup solution by
>forgoing the mpsb solution, and keeping it SIMPLE!

So instead of maintaing two 32 port machines, I'd have to administer
16 machines with four ports on each? I don't think so.

You're ignoring the Terminal Server solution. A multiport terminal server
offers 10-64 serial ports with greater fault tolerance, lower power
consumption, and much less administrative overhead at about the same price
per port.
--
David Richards                                     Ripco Communications Inc.
My opinions are my own,                            Public Access in Chicago
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dr@ripco.com                                       (312) 665-0065