TP-Link TL-WR841ND - Wireless N Router Atheros 2T2R 2.4GHz 802.11n 2.0 User Manual page 37

Connect on Demand - In this mode, the Internet connection can be terminated automatically
after a specified inactivity period (Max Idle Time) and be re-established when you attempt to
access the Internet again. If you want your Internet connection keeps active all the time,
please enter "0" in the Max Idle Time field. Otherwise, enter the number of minutes you want
to have elapsed before your Internet access disconnects.
Connect Automatically - The connection can be re-established automatically when it was
down.
Connect Manually - You can click the Connect/Disconnect button to connect/disconnect
immediately. This mode also supports the Max Idle Time function as Connect on Demand
mode. The Internet connection can be disconnected automatically after a specified inactivity
period and re-established when you attempt to access the Internet again.
Click the Connect button to connect immediately. Click the Disconnect button to disconnect
immediately.
Caution: Sometimes the connection cannot be terminated although you specify a time to Max Idle
Time because some applications are visiting the Internet continually in the background.
Click the Save button to save your settings.
5. If your ISP provides L2TP connection, please select L2TP option. And you should enter the
following parameters (Figure 4-11):
TL-WR841N/TL-WR841ND
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Wireless N Router