[ih] X.25

Lyndon Nerenberg (VE7TFX/VE6BBM) lyndon at orthanc.ca
Wed Oct 1 17:12:54 PDT 2025


Dave Crocker writes:

> 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.)

Didn't ISODE beat them to it?  I had the ISODE tape around 1987,
but I can't remember if there was an X.400 implementation at that
time.  But I'd be surprised if there wasn't, given how often Steve
Kille's name shows up on X.400-related RFCs.

I know by 1996 Isode's (now the company) X.400 system was very
mature and running at many eites.  At Esys, we licensed and sold
their X.500 product on a number of UNIX platforms.  I was the lucky
guy who had to package and support that beast.

At one point we (Esys) bought Isode.  Then Esys/Isode was bought
by ACI (the payments processor).  Soon after, ACI couldn't figure
out what to do with them and sold the Isode component back to Steve
Kille.  There's quite a story in that whole ACI fiasco :-)

--lyndon


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