ZyXEL Communications LTE Series User Manual page 204

Make sure you entered your ISP account information correctly. These fields are case-sensitive, so make
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sure [Caps Lock] is not on.
For LTE3301-PLUS, make sure you converted LAN port number four as WAN. Click Enable in Network
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Setting > Broadband > Ethernet WAN screen. Make sure you have the Ethernet WAN port connected to
a modem or router.
If the problem continues, contact your ISP.
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I cannot access the Internet anymore. I had access to the Internet (with the Zyxel Device), but my
Internet connection is not available anymore.
Check the hardware connections (refer to the Quick Start Guide).
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Turn the Zyxel Device off and on.
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If the problem continues, contact your ISP.
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The Internet connection is slow or intermittent.
There might be a lot of traffic on the network. If the Zyxel Device is sending or receiving a lot of
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information, try closing some programs that use the Internet, especially peer-to-peer applications.
Check the signal strength. Look at the LEDs, and check the LED section for more information. If the signal
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strength is low, try moving the Zyxel Device closer to the ISP's base station if possible, and look around to
see if there are any devices that might be interfering with the wireless network (for example,
microwaves, other wireless networks, and so on).
For the LTE3301-PLUS, connect two external antennas to improve the wireless WAN signal strength. Point
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the antennas to the base stations directions if you know where they are, or try pointing the antennas in
different directions and check which provides the strongest signal to the Zyxel Device. See the
Introduction chapter for more information.
Turn the Zyxel Device off and on.
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If the problem continues, contact the network administrator or vendor, or try the advanced suggestion
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(refer to I cannot see or access the Login screen in the Web Configurator
Note: Since your
affect LTE signals.
Chapter 30 Troubleshooting
Zyxel Device is an outdoor-type, inclement weather like rain and hot weather may
LTE Series User's Guide
204
in this chapter).