[GreenKeys] Teletype ASR33 Connections - help please

[Alf Fisher]

Hi guys,
I have a Teletype Model ASR33 and would like to know what interface it is 
fitted with so that I can connect to it and make it work again.

It has a 44 way connector on the end of the signal cable and used to work 
with some kind of mini computer - possibly DEC based.

Thanks to Sam Hallas, there are now four pics on his website at 
http://www.samhallas.cwc.net/greenkeys/ showing a side view of the machine, 
the driver board and the signal cable connector.

There is a group of 8 or so square nylon connectors at the back of the 
machine but I haven't yet identified which connector goes where.
If someone can tell me whether it is an RS-232 or current loop interface and 
which pins of which connector to use, it would be much appreciated.

Many thanks.

73
Alf
G3WSD