Newton Connection Kit: Connecting to Undocked Duo

Whenever I use the Newton Connection Kit to synchronize my Newton MessagePad with an undocked PowerBook Duo, the Connection Kit returns an error message that says no connection could be established.

How can I make this configuration work?
To use the Newton Connection Kit with an undocked PowerBook Duo, follow these steps:

1) Turn AppleTalk off by opening the Chooser application from the Apple Menu and clicking the AppleTalk Inactive radio button.

2) Connect one end of the serial communications cable to the Duo's modem/printer port.

3) If you are using a Duo 250 or 270c, open the PowerBook Setup Control Panel and set the modem setting to Normal; otherwise, set the Modem Control Panel settings to External Modem.

4) Connect the other end of the serial communications cable to the Newton's communications port.

You should now be able to operate the Newton Connection Kit with your PowerBook Duo.
Published Date: Feb 19, 2012