SMC Networks SMC2804WBR V.2 - Manual (Page 38)

Configuring the Wireless Barricade™ g Router
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PPPoE xDSL
Enter the PPPoE User Name and Password assigned by your
Service Provider. The Service Name is normally optional, but
may be required by some service providers.
Leave the Maximum Transmission Unit (MTU) at the default
value (1454) unless you have a particular reason to change it.
Enter a Maximum Idle Time (in minutes) to define a maximum
period of time for which the Internet connection is maintained
during inactivity. If the connection is inactive for longer than
the Maximum Idle Time, it will be dropped. (Default: 10).
Enable the Auto-reconnect option to automatically re-establish
the connection as soon as you attempt to access the Internet
again. Click FINISH to complete the setup.
Note: Please be aware that the setting of [Maximum Idle
Time] to "0" and/or [Auto-Reconnect] enabled can
cause an increase of your telephone bill if you don't
have signed a flatrate.