Thanks so far,
but because the modem 9 pin cable is too short anyway, I have to use a 9 to 25 pin wire. I´ve already found the COMPLETE 9 to 25 connection, the big question is : how many lines are NEEDED ?
The modem connector is a 6 line telephone wire plug, so definitively 3 of the 9 pins on the other end are unused.
I still have a 25 to 25 cable, once used to connect my 286 with an Ampex terminal (Yes, with really good operating systems it was possible to have multi user operations on a 286 in the mid 80s) which has just 5 pins connected, the question is are they enough ? Or is there a 6th important line ?