> On 18 Mar 2021, at 10:44, Paul Ruizendaal via TUHS <tuhs@minnie.tuhs.org> wrote:
> 
> Does anybody here know the backstory to Micnet and/or how it worked?

The Xenix communications manual has plenty of detail on how to set it up:
http://www.nj7p.org/Manuals/PDFs/Intel/174461-001.pdf

Looks as if it built a routed network among a set of Xenix machines using
conventional serial lines, including remote login / file transfer / mail
ervices. Would have been quite a big selling point for software development
shops in the days before TCP/IP and ubiquitous connectivity, especially as
it looks as if it was decentralised and didn’t require any extra server
hardware. MMDF could route mail between Micnet and UUCP.

Mike