🚀 go-pugleaf

In message <19960910.180911.68@axis.demon.co.uk> Nick Craig-Wood wrote:


> > The whole point about ISDN is that its a digital transmission network
> > therefore the conventional MODEM-PSTN-MODEM setup is useless because you
> > don't need to convert to analouge, you just send the straight digital data
> > stream down the line.  
> > 
> > The TA (Terminal adapter) connects your computer to the ISDN line at a very
> > fast data rate, upto 128Kbaud per sec if using X25 and both data channels on
> > ISDN 2! It also dials the number and sets the line up (using the D channel
> > I believe).
> 
> Correct so far...
> 
> > Therefor to use ISDN you need a suitable TA card to link
> > computer to ISDN and a software, like ISDN manager on the Mac, to control
> > said TA.  Your comms s/w must also support the ISDN card.  
> > 
> > I may be wrong but I didn't think there was any s/w on the Acorn that could
> > do this, I hope I'm wrong!
> 
> You are wrong I'm afraid.  You can get internal or external TAs just like
> modems.  Most external TAs will work with an Acorn machine and most of them
> emulate AT commands to appear like a modem.
> 
> I've used my TA with !TCPIP, Freenet, Arcterm7, Connector & the Ant Suite.
> 
> If you want to use X25 ie HDLC framing then most TAs define a simple
> conversion to and from async.  You then connect your TA to your computer at
> anything up to 460.8 kbits/s and away you go.  If you meant X25 over the D
> channel then you can't do this yet over BTs network and I am betting that if
> it ever becomes available it will be prohibitively expensive.

Can you or someone post a clear and concise article on what we need
(hardware and software), what it costs, how fast it works etc. 

I know nothing about ISDN but if you have a system working on the RPC then
PLEASE tell us all about it.



-- 
+++++++++++++++++++++++++++++++++++++++++++++++++++++
+     Dave Clare  DClare@Clares.demon.co.uk         +
+      Proprietor. Clares Micro Supplies            +
+    Web site http://www.stcoll.ac.uk/clares/       +
+++++++++++++++++++++++++++++++++++++++++++++++++++++