Xerox Phaser 790 Documentation page 393

In Remote Setup, Token Ring information displays even if you have not
enabled Token Ring.
Xerox Phaser 790
Enter one of the following values in the Subnet Mask text
boxes:
255.0.0.0 if the IP address starts with a number less
than 128
255.255.0.0 if the IP address starts with a number in
the range of 128—191
255.255.255.0 if the IP address starts with a number
greater than 191 (network defined)
Confirm the Subnet Mask setting with your system
administrator before proceeding. In some cases the required
setting may be different from those listed.
If your TCP/IP network has a gateway and you expect users
outside the gateway to print to the printer using TCP/IP,
perform one of the following:
Select the IP Auto radio button to enable the system to
find an IP Gateway address to use.
Select the IP Static radio button and type the address
in the Gateway text boxes (the default address is
127.000.000.001).
21. Performing the setup from WebSetup
21–13