International Modem Connector

[Doug Rosser]

Duo's fitted with Internal modems in the US used a stamdard phone conenctor
socket (on the opposite side to the modem/printer serial port on the rear
panel)
International Duos were fitted with a standard 8 pin socket (looks like a
serial connection) and appear to have used an adapter cable to terminate in
the appropriate socket for the destination country.
My question,
Does anyone know the pin-out on the 8 pin socket, so I can make my own
cable?
Doug