ZyXEL Communications Omni 288S User Manual page 22

Make sure your Omni modem appears in the "Connect Using." Then click on the
"Server Type" button.
These options are mostly host or server specific.
If you are using PPP, use the default settings shown above.
If you are logging on to an Internet connection, then select "TCP/IP."
If you are connecting to a LAN, then select "Login to Network."
If you are logging on to a Microsoft Windows network, select "NetBEUI."
Chapter 2 - Installation
2-7