ZyXEL Communications NR Series - Internet Problems

Chapter 37 Troubleshooting
NR/FWA Indoor Series User’s Guide
326
Note: Cellular network signals and quality can fluctuate. A measurement taken now and a
few moments later can differ substantially even if nothing apparent has changed – this
can be due to many aspects, such as fading, reflections, interference, capacity due to
high network traffic, and so on.
It is possible that the network topology and usage changes over time, even from one minute to the next
as network utilization increases. If poor performance is experienced at a later stage, re-test different
installation locations again. It is possible that the current serving cellular site has become over utilized or
is out-of-service. As the network design and topology changes, so will the experience change, either for
the better or for the worse.
37.5 Internet Problems
I cannot access the Internet.
1 Check the hardware connections and make sure the LEDs are behaving as expected. See the Quick
Start Guide.
2 Check the SIM card. Maybe it has wrong settings, the account has expired, it needs to be removed and
reinserted (refer to the Quick Start Guide), or it is missing. See Section 37.7 on page 329 for possible SIM
card problems.
3 Make sure you entered your ISP account information correctly on the Network Setting > Broadband
screen. Fields on this screen are case-sensitive, so check if [Caps Lock] is on of off.
4 Check that the WAN interface you are connected to is in the same interface group as the Ethernet
connection (Network Setting > Interface Group).
5 Make sure you have the Ethernet WAN port connected to a Modem or Router.
6 If you set up a WAN connection using bridging service, make sure you turn off the DHCP feature in the
Network Setting > Home Networking > LAN Setup screen to have the clients get WAN IP addresses
directly from your ISP’s DHCP server.
7 For models that have optional dual LAN/WAN ports, make sure you converted the LAN port to a WAN
port by clicking Enable on the Network Setting > Broadband > Ethernet WAN screen. Then make sure you
have the Ethernet WAN port connected to a modem or router.
8 If you are trying to access the Internet wirelessly, make sure that you enabled the WiFi in the Zyxel Device
and your WiFi client and that the WiFi settings in the WiFi client are the same as the settings in the Zyxel
Device.
9 Disconnect all the cables from your Zyxel Device and reconnect them.
10 If the problem continues, contact your ISP.