The only way to set the baud rate of the LaserWriter IINTX to 19.2K baud is by
sending a PostScript program to the LaserWriter. For reference, here is the
PostScript program:
serverdict begin 0 exitserver
statusdict begin 25 19200 64 setsccbatch
For a more detailed description of this program and the options it can change,
see page 122 of the "LaserWriter IINT/NTX Owner's Guide."