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TL-MR3220 3G/3.75G Wireless Lite N Router
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¾ 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.
¾ Use the following DNS Servers - If your ISP specifies 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.
¾ Primary DNS - Enter the DNS IP address in dotted-decimal notation provided by your ISP.
¾ 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 Modem Settings button if your 3G USB Modem is not supported by the Router, and
then you will see the screen as shown in Figure 4-10. Parameters of your USB modem can be
configured o
n this page.
Figure 4-10 3G USB Modem Settings
There are already much 3G 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 USB Modem Setting” only in such circumstance.
To add 3G USB Modem entries, follow the steps below.
1. Download a most recent 3G USB modem configuration file from our website
(http://www.tp-link.com).
2. Click
the Add New... button in Figure 4-10, and then you will see Figure 4-11.
3. Click Bro
wse… to select the path name where you save the downloaded file on the
computer into the File blank.