To configure the serial port to which the Braille device is connected on Solaris systems, perform the following steps:
Log in as the root user.
Enter the following command:
chmod 777 /dev/cua/a
Enter the following command:
chmod 777 /dev/cua/b
Change the permissions to 777 on the devices to which the symbolic links /dev/cua/a and /dev/cua/b point.
If your system uses /dev/cua/a for system log messages, Braille will not work on that serial port. Use /dev/cua/b instead.