TP-Link TL-WR542G User Manual page 28

Only when you have configured the system time on System Tools -> Time page, will the
Time-based Connecting function can take effect.
Connect Manually - You can configure the router to make it connect or disconnect manually.
After a specified period of inactivity (Max Idle Time), the router will disconnect from the
Internet connection, and you will not be able to re-establish your connection automatically as
soon as you attempt to access the Internet again. To use this option, click the radio button. If
you want your Internet connection to remain active at all times, enter "0" in the Max Idle Time
field. Otherwise, enter the number time in minutes that you wish to have the Internet
connecting last unless a new link is requested.
Caution: Sometimes the connection cannot be disconnected although you specify a time to
Max Idle Time, since some applications are visiting the Internet continually in the background.
Click the Connect button to connect immediately. Click the Disconnect button to disconnect
immediately.
Click the Advanced Settings button to set up the advanced option, the page shown in Figure
4-7 will then appear:
Packet MTU - The default MTU size is 1480 bytes, which value is usually fine. For some
ISPs, you need modify the MTU. This should not be done unless you are sure it is necessary
for your ISP.
Service Name/AC Name - The service name and AC (Access Concentrator) name, these
should not be configured unless you are sure it is necessary for your ISP.
TL-WR542G
Figure 4-7 PPPoE Advanced Settings
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54Mbps Wireless Router User Guide