TRENDnet TW100-S4W1CA User Manual page 28

The Service Name, IP Address, and DNS Address fields must be
completed if your ISP provided you with this information. If your ISP
Provider provides a Dynamic IP Address, you should skip these fields.
The MTU feature specifies the largest packet size permitted for network
transmission. Enter the value desired; for most DSL users, 1492 is
recommended. By default, MTU is set at 1492.
The Maximum Idle Time feature can control the connection time if you
want to reduce connection fees charged by your ISP (default time=0,
always connect). Check the Connect-on-demand box to enable your
router to connect your ISP whenever an Internet connection is required.
1-2-4 PPTP
If connecting to the Internet using a PPTP xDSL Modem, enter the PPTP
Account Name, PPTP Password, Host Name, Service IP Address, your IP
Address, and your Subnet Mask as provided by your ISP in the