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Re: ISDN save the need for modem terminal !?



On Tue, 11 Jun 1996, Isaac Miller wrote:

> 
> Suppose I want to serve some tens of ppp clients to a 
> material on my Linux box running http server. I very generaly
> understands how this is done using modems terminal set.
> But someone tried to convinve me that having an ISDN line
> from Bezek will save this while all mutiplexing of trafic
> will be done through Bezek.
> Excuse me if this is a very dumb hypothesis, and it sounds 
> strange to me too. But better ask then stay ignorant ....
> 
hardly a Linux question, but here goes...

ISDN is NOT a line multiplexor of any sort, it is a digital dialup line 
of 64k bits wide. Bezek always sells those 64k channels in pairs, which 
is the most common standard for ISDN today, other than some American 
switches witch still give you single lines of 56k.

if you want to connect multiple users you either buy a terminal server 
(expensive) or connect as many modems as you can to your computer 
(usually 4) and add again on other networked linii (also expensive) or 
get a multi-port card and connect 20,30, or even 40 people to the same 
machine, only make sure it's a Pentium first...

to read more about these cards, look up an article about them in one of 
the latest Linux Journals, witch is available on the web, or go straight 
to www.cyclades.com, www.comtrol.com (their RocketPort is supposed to be 
the best on the market), www.stallions.com and I forgot the address for 
digi.


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