TP-Link TL-WR740N - 150Mbps Wireless Lite N Router IEEE 802.11n 802.11g 802.11b Built-in User Manual page 39

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 4-12):
TL-WR740N/TL-WR741ND
Figure 4-12
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150Mbps Wireless N Router