On Thursday, 04/03/2008 at 04:58 EDT, Dave Wade 
<[EMAIL PROTECTED]> wrote:
> Whilst I never had the luxury of working in the labs I did do a lot of 
work
> on implementing code on GCS. When SP4 came out I was working for the
> University of Salford who at the time, in conjunction with IBM UK, 
produced
> a package of software and hardware that allowed VM to be connected to an
> X.25 network.
> 
> The software consisted of service machine that was basically an X.25 
switch,
> and which talked to X.25 via a Series/1 on the channel, and to other 
virtual
> machines via IUCV. When GCS and VTAM came out we modified the service
> machine to run in GCS. Initially it still talked to the Series/1 via the
> channel cards, but we then modified it to talk to X.25 via VTAM and 
NPSI.

z/VM 5.3 is the end of the line for X25IPI, the SNA X.25 NPSI device 
driver for VM TCP/IP.

Alan Altmark
z/VM Development
IBM Endicott

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