Thank you for your reply and information on the matter.
The T1000 has been used for radio teletype receiving in ham radio before.
The listings of the wire colors and their positions on de ado8 connector is all clear to me on the T1000 side.
I do have access to the former minesweeper where the T1000 is, I am not having enough time at the moment but in the next weeks i will so then I will report back to the forum with pictures of the interface board.
I have not enough knowledge of the T1000 to see if there are extra switches being installed or if mods are being done...

Greeetzzzzzz
Ruud PD0RH