TP-Link TL-MR3420 User Manual page 40

VPN Server IP/Domain Name - Enter the IP address or domain name of the VPN server

provided by your ISP.
User Name/Password - Enter the User Name and Password provided by your ISP. These

fields are case-sensitive.
Dynamic IP/ Static IP - Select Static IP if IP address, subnet mask, gateway and DNS

server address have been provided by your ISP. Otherwise, please select Dynamic IP.
Connect on Demand - You can configure the router to disconnect from your Internet

connection after a specified period of inactivity (Max Idle Time). If your Internet connection
has been terminated due to inactivity, Connect on Demand enables the router to
automatically re-establish your connection as soon as you attempt to access the Internet
again. If you wish to activate Connect on Demand, check 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 of minutes you want to have elapsed before your Internet
connection terminates.
Connect Automatically - Connect automatically after the router is disconnected. To use

this option, check the radio button.
TL-MR3420
Figure 5-10 PPTP Settings
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3G/4G Wireless N Router User Guide