Can't identify piece of equipment

[Csanad]

We found this in a storage room at work. Nobody has any idea where it came from or what it is. Any ideas? If need be I can post pictures of the circuit boards. It appears to have been built in 1984.

 

[Minder]

RS232 data logger for send/receive and record on tape.
25pin D was the standard COM port back then, before the current 9 pin.
M.