TL-MR3420 3G/4G Wireless N Router User Guide
APN - Enter the APN (Access Point Name) provided by your ISP.
Username/Password - Enter the User Name and Password provided by your ISP. These
fields are case-sensitive.
MTU Size - The default MTU (Maximum Transmission Unit) size is 1480 bytes, which is
usually fine. For some ISPs, you need modify the MTU. This should not be done unless
you are sure it is necessary for your ISP.
Use the following DNS Servers - If your ISP specify a DNS server IP address for you,
click the checkbox, and fill the Primary DNS and Secondary DNS blanks below. The
Secondary DNS is optional. Otherwise, the DNS servers will be assigned dynamically from
ISP.
Primary DNS - (Optional) Enter the DNS IP address in dotted-decimal notation provided by
your ISP.
Secondary DNS - (Optional) Enter another DNS IP address in dotted-decimal notation
provided by your ISP.
Click the Save button to save your settings.
Click the Back button to return the previous page.
Click the Modem Settings button (in Figure 4-6) if your 3G/4G USB Modem is not supported by
the Router, and then you will see the screen as shown in Figure 4-8. Parameters of your USB
modem can be configured on this page.
Figure 4-8 3G/4G USB Modem Settings
There is already much 3G/4G USB modem information embedded in the Router. The USB
modem parameters will be set automatically if the card is supported by the Router. But when
the Router finds the card you just insert "unknown" to it, it will prompt you to set these
parameters. The Router can identify your "unknown" card if the correct parameters are in the
list. We suggest you to do the “3G/4G USB Modem Setting” only in such circumstance.
To add 3G/4G USB Modem entries, follow the steps below.
1. Download a most recent 3G/4G USB modem configuration file from our website
(http://www.tp-link.com).
2. Click
the Add New... button in Figure 4-8, and then you will see Figure 4-9.
3. Click Browse… to select the path name where you save the downloaded file on the
computer into the File blank.
4. Click the Upload button to upload the configuration.
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