TP-Link TL-MR3020 User Manual page 58

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/Russia L2TP option. And you
should enter the following parameters (Figure 4-17):
TL-MR3020
Figure 4-17 L2TP Settings
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Portable 3G/3.75G Wireless N Router