Whilst researching this machine, I've found some fascinating articles, including these two reviews of it when it came out:

http://www.nytimes.com/1990/08/14/science/personal-computers-a-9-pound-mac-clone.html

http://articles.chicagotribune.com/1990-08-05/business/9003050639_1_macintosh-clone-outbound-systems-portable

I need to find out what happens when I hook it up to another Mac!

Oh and I've got it all up and running. Seems to have lots of Outbound-specific software installed, version 1.2.1