I found an interface I've never seen, a Fisher Rosemont Highway interface. I
don't know much in the history of Dec / VMS, but am guessing this is for Vax
I found this flyer sheet about it with the info on the interface. I'm
guessing if you don't have one of the central boxes, you have some expensive
gold scrap in these boards.
Some years ago I was talking to Virginia DOT about access to camera feeds
in the Hampton Roads (Southeastern Virginia) region. I eventually got
access to the ftp site where the pics were dumped out every 5 minutes.
The listing of cameras was screen shots taken from an OpenVMS control
application that had the camera names and locations on maps, as well as
digital signage and some other functions. I was kind of surprised since
this was late in the VMS game, perhaps mid 2000's. And the system was
still being built.
Not sure if that board is a part of that setup but it was VMS. Probably
still have the screenshots somewhere.