[ih] X.25

[Dave Crocker]

On 10/1/2025 2:55 PM, Lyndon Nerenberg (VE7TFX/VE6BBM) wrote:
> Dave Crocker writes:
> Well, yes.  The X.28/X.29 PAD interface was implied.

Oh.  But it is such a big difference.

During the formative meeting, around 1980, that produced the CSNet 
proposal, various august notables in attendance had assumed that the 
commercial networking services were like the Arpanet. That is, 
peer-to-peer at the host level.  It was dismaying to discover that it 
was more like a strictly Telnet world, as client/server.

However that set them up nicely to support initial CSNet operational 
just using dial-up.  (For email.)

More interesting would have been a packet interface, as you then cite.


> But UBC did a native X.25 implementation for 42BSD.  In fact, they
> did a pretty substantial ISO stack.

As I recall, UBC had the first operational X.400 implementation. (In 
fact, at Wollongong we used it as the base for a product 
commercialization effort.)

d/

-- 
Dave Crocker

Brandenburg InternetWorking
bbiw.net
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