Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!snorkelwacker!ira.uka.de!smurf!nadia!complx!pi
From: pi@complx.UUCP (Kurt Jaeger)
Newsgroups: comp.protocols.tcp-ip
Subject: Re: TCP/IP over ISDN
Keywords: Works
Message-ID: <1000@complx.UUCP>
Date: 18 Sep 90 07:18:41 GMT
References: <1990Sep17.100257.9110@specialix.co.uk>
Reply-To: pi@complx.stgt.sub.org (Kurt Jaeger)
Organization: complx, D7K
Lines: 41

In article <1990Sep17.100257.9110@specialix.co.uk> jpp@specialix.co.uk (John Pettitt) writes:
>Well ?  has anybody done it ?   I am told that I can get call setup
>times of the order of 200ms over ISDN.
Thats right. You can get something like a "leased ISDN" which requires
You to pay (e.g. here in the FRG) at least 80 hours per month of
connect time, but it will connect the line in a very short time. I think
the 200ms depend on the distance to the goal.

>If this is true it should be possible to `fake' a connected all the
>time link using ISDN thus saving the cost of a leased line.
Well, but it is NOT needed to use a fast-dial ISDN line. At the recent
GUUG meeting Wiesbaden I have seen a normal ISDN setup with IP over ISDN.
The line had a timeout of 20 seconds and automatically redialed when
there were more packets. The timeout can be configured, they said...
The dialing time was approx. three seconds, so IP wont recognize it
anyway.

I did a telnet to a host approx. 100km away and ftp'ed from there
the kernel. The transmission rate was 5.2KB/sec (hashing enabled).

The company offering the software (for 386er *IX, almost all important
brands) can be reached at:

BinTec
Computersysteme
Willstaetter Strasse 30
D-8500 Nuernberg 60
Tel. 0911-99675-0
Fax. 0911-6880725

I do not have any correlations with them, except hoping to reduce my
News-feed-costs :)

>This does sound rather too good to be true.  Comments ?
It sounds very interesting, yes. Well, that solution is useful for
european ISDN-lines only, I assume :(

              So long, PI

-- 
pi@complx.stgt.sub.org, K.Jaeger, D7K/FRG, +49 711 8701309 Q, 30 years to go !