You can verify that the sa device is available by typing this command at a root prompt:
lsdev -Cc nts
Note: The first character of the above command is the letter, l (ell), and not the numeral, 1 (one).
Following is an example of the output of this command:
sa7 Available Digi PortServer 1
An error message may display if the Digi device has not been successfully added.