User`s guide

Auto Reconnect (Always
-on): The device will link with ISP until the connection is
established.
Manually: The device will not make the link until someone clicks the connect-button
in the Status-page.
7. Maximum Transmission Unit (MTU): Most ISP offers MTU value to users. The
default#MTU value is 0(auto).
Or select Wireless WAN for 3G Setting.