ZyXEL Communications omni TA128 User Manual page 45

These options are mostly host or server specific.
If you are using PPP, use the default settings shown above.
If you are connecting to a LAN, then select "Login to
If you are logging on to a Microsoft Windows network,
select "NetBEUI."
If you are logging on to a Novell network, then select
"IPX/SPX Compatible."
If you are logging on to an Internet connection, then select
"TCP/IP."
7. Click on "TCP/IP Settings."
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