Vigor2120 Series User’s Guide
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To use 3G/4G USB Modem (DHCP mode) as the accessing protocol of the internet, please
choose Internet Access from WAN menu. Then, select 3G/4G USB Modem (DHCP mode)
for WAN2. The following web page will be shown.
Available settings are explained as follows:
Item Description
3G/4G USB
Modem (DHCP
mode)
Click Enable for activating this function. If you click
Disable, this function will be closed and all the settings that
you adjusted in this page will be invalid.
SIM PIN code
Type PIN code of the SIM card that will be used to access
Internet.
The maximum length of the PIN code you can set is 15
characters.
Network Mode
Force Vigor router to connect Internet with the mode
specified here. If you choose 4G/3G/2G as network mode,
the router will choose a suitable one according to the actual
wireless signal automatically.
APN Name
APN means Access Point Name which is provided and
required by some ISPs. Type the name and click Apply.
The maximum length of the name you can set is 43
characters.
MTU
It means Max Transmit Unit for packet.
Path MTU Discovery – It is used to detect the maximum
MTU size of a packet not to be segmented in specific
transmit path.
Click Choose IP to open the following dialog.
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