> On Jul 17, 2016, at 10:41 AM, Paul Koning <paulkon...@comcast.net> wrote:
> 
> 
>> On Jul 16, 2016, at 6:56 PM, Antonio Carlini <a.carl...@ntlworld.com> wrote:
>> 
>> ...
>> The specs were (and are) freely available. (I'm not 100% sure that they were 
>> free-as-in-beer back then, but they are now).
> 
> I assume you had to pay for the cost of printing.  They could be freely 
> reproduced, though, it says so explicitly.
> 
>> There was at least one implementation for Linux and (I think ...) another 
>> for Solaris. cisco also supported DECnet in some of
>> their switches.
> 
> Yes, and for that matter, there was a commercial non-DEC DECnet, by Stuart 
> Wecker I think -- he was involved with DDCMP way back when.
> 
        That was Technology Concepts Inc, Sudbury MA. Sometime around 1984 I 
almost left
        DEC to join TCI but then had a change of heart. Sun’s DECnet 
implementation was
        either done by TCI or based on their code.

>> ...
>> (I'm assuming that Phase II existed at some point before Phase III, which 
>> definitely did exist. I also
>> assume that Phase I only acquired that designation once Phase II appeared!)
> 
> I suppose so.  Rumor had it that Phase I only existed on RSX, but it appears 
> that there was a PDP-8 implementation as well.  Phase II was implemented on 
> lots of DEC systems, from TOPS-10 to RT-11 to RSTS/E.  My initial involvement 
> with DECnet was as the DECnet/E kernel guy, upgrading DECnet/E from Phase II 
> to Phase III.
> 
        I worked at a customer site in Sweden which consisted of a pair of 
11/40’s running
        RSX-11D and DECnet Phase I. I’m pretty sure that Phase I only ran on 
11D in the RSX
        family.

            John.

>       paul
> 

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