Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!spool.mu.edu!munnari.oz.au!labtam!eyrie!phoenix!hunter
From: hunter@phoenix.pub.uu.oz.au (James Gardiner [hunter])
Newsgroups: comp.sys.amiga.datacomm
Subject: Re: 19200bps
Keywords: 19200 bps
Message-ID: <1991May11.152050.13051@phoenix.pub.uu.oz.au>
Date: 11 May 91 15:20:50 GMT
References: <1991May5.185645.12902@cunixf.cc.columbia.edu> <1991May5.201708.452@cec1.wustl.edu> <1492@caslon.cs.arizona.edu> <48579@ut-emx.uucp> <21354@cbmvax.commodore.com>
Organization: Phoenix ComSystem. Public UNIX Melbourne Australia.
Lines: 39

In <21354@cbmvax.commodore.com> drysdale@cbmvax.commodore.com (Scott Drysdale) writes:
>that's not really true.  ISDN is one local office to customer site digital
>solution.  it works on your existing wiring, and provides two bidirectional
>64Kbps channels, and a 2kbps signaling channel.  this allows 8khz 8-bit
>sampled voice on two lines.  the big problem ISDN faces presently is the
>high cost of the customer's equipment.  is everyone willing and able to
>replace all their phones (which cost around $25 nowadays) with $200 phones?

>ISDN is running in many test installations and lots of corporate locations.
>many modern pbx'es are actually small ISDN switches.

>i want ISDN for the 64K "baud" bidirectional serial connection (of course,
>hooking this up to your serial port is not going to work.  you'll need a little
>box (which perhaps sits on a SCSI bus or a special plug in card)).  some of
>the ISDN phones available have "modems" built in, but they can only talk to
>other ISDN phones.  there are also DSP solutions that are compatible with
>existing analog modems.  but all this costs money, there is no real standard
>(many companies make ISDN switches, very few can talk to each other), and
>people aren't exactly clamoring for it.

>ISDN - I Still Don't Know
>       I Smell Dollars Now
>       Innovations Subscribers Don't Need (my favorite)

Here in Australia, ISDN is readily available.  Most people do not know this
but the AXE exchanges we have all around us now are ISDN machines.
At present they are running analog to the normal user but with a flick
of the switch and lotsa lotsa lotsa money you get a know phone
and ISDN.  Thats all that needs to be done...
Telecom Australia plan to bring in ISDN as standard.  This to a degree
is BAD.  Telecom have attempted to bring in time local calls for years.
This is how they will do it.  ISDN is time everything and duoble time
on DATA calls. (local calls in Australia are not just in same exchange
but in the same City, iner and outer suberbs.)
Even though we have ISDN, we may use modems over them as it will
probably turn out cheaper then going ISDN data.


James.