TRENDnet TW100-S4W1CA User Manual page 29

appropriate fields. If your ISP has provided you with a Connection ID,
enter it in the Connection ID field. Otherwise, leave it blank.
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 (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.