Marc Chametzky wrote: DECnet-Plus isn't able to connect, or at least reliably connect to all OS's that can potentially be on HECnet. I forget what all OS's I was having issues with, I know one was RSTS/E v10.1, but I want to say it also included VAX/VMS. Once I *upgraded* my Alpha running OpenVMS to DECnet Phase IV, all these issues went away. These were things as simple as SET HOST. It's probably that DECnet-Plus (Phase V) cannot speak with DECnet Phase III (such as on RSTS/E and TOPS-10/20). That's my guess anyway. Phase V should be able to communicate with VAX/VMS since that's Phase IV, which is the gold standard of DECnet, IMHO. TOPS-20 DECnet is phase IV, and I believe that the latest version of DECnet for RSTS/E is also phase IV. Correct, starting with RSTS/E V9.3 (DECnet/E 4.0). Older versions (V7.0 and up) are Phase III. RT-11 is Phase III as far as I know. paul