TP-Link TW-MR3220 User Manual page 19

3G/4G Preferred

In this mode, the Router will try 3G/4G access first. If 3G/4G access fails and WAN
access is valid, or if no 3G/4G USB modem is inserted, the Router would switch to WAN
access. Once the Router succeeds to connect to the 3G/4G network, the Router would
stop the WAN connection and switch back to 3G/4G access immediately.
3G/4G Only

In this mode, the Router will try 3G/4G access only. WAN access is disabled.
WAN Preferred

In this mode, the Router will try WAN access first. If the WAN access fails and 3G/4G
access is valid, the Router would switch to 3G/4G access. Once the Router succeeds to
connect to the WAN network, the Router would stop the 3G/4G connection and switch
back to WAN access immediately.
WAN Only

In this mode, the Router will try WAN access only. 3G/4G access is disabled.
4. The next screen will appear as shown below. You need to set the required parameters and
then click Next.
Location - Select the location where you're enjoying the 3G/4G card.

Mobile ISP - Select the ISP (Internet Service Provider) you apply to for 3G/4G service. The

Router will show the default Dial Number and APN of that ISP. If your ISP is not listed in the
Mobile ISP, check the box before Set the Dial Number, APN, Username and Password
manually and fill the Dial Number and APN blanks below.
Authentication Type - Some ISPs need a specific authentication type. Please confirm it

with your ISP or keep it Auto.
Dial Number & APN - Set these two parameters manually after Set the Dial Number, APN,

Username and Password manually is checked.
Username/Password - Enter the Username and Password provided by your ISP. These

fields are optional but case-sensitive.
TL-MR3220 3G/4G Wireless N Router User Guide
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