Set the Baud Rate.
Note that the default admintool baud rates cycle, meaning the speed at the end of the corresponding /etc/ttytype entry is different than the speed at the beginning of the entry. It is often preferable to set them to a fixed rate.
As an example, this line can be added to /etc/ttytype to configure the device for a 38400 fixed rate.
38400N:38400 hupcl:38400 hupcl::38400N
If a custom /etc/ttytype entry is used, set Baud Rate to Other and enter the /etc/ttytype identifier (e.g. 38400N).