Although most hosts automatically initiate serial device-to-host communications (via the Csi?9i control function), if you are using a host application that does not, you may also need to manually enable serial device-to-host communications.
To enable serial device-to-host communications manually
Open a VT terminal session.
Under , click .
Under , click .
Click the button.
Select the check box.
The button from the dialog box is equivalent to the button from the dialog box. You can use the button from either dialog box to configure your serial device port.
Click .