Chapter 30 Troubleshooting
P-660HN-51 User’s Guide
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3 If you are trying to access the Internet wirelessly, make sure the wireless settings in the wireless client are
the same as the settings in the AP.
4 If you are trying to access the Internet wirelessly, make sure you have enabled the wireless LAN by the
WPS button or the Network Settings > Wireless > General screen.
5 Disconnect all the cables from your device, and follow the directions in the Quick Start Guide again.
6 If the problem continues, contact your ISP.
I cannot access the Internet anymore. I had access to the Internet (with the Zyxel Device), but my
Internet connection is not available anymore.
1 Check the hardware connections, and make sure the LEDs are behaving as expected. See the Quick
Start Guide and Section 1.6 on page 16.
2 Turn the Zyxel Device off and on.
3 If the problem continues, contact your ISP.
30.4 Wireless Internet Access
What factors may cause intermittent or unstabled wireless connection? How can I solve this
problem?
The following factors may cause interference:
• Obstacles: walls, ceilings, furniture, and so on.
• Building Materials: metal doors, aluminum studs.
• Electrical devices: microwaves, monitors, electric motors, cordless phones, and other wireless devices.
To optimize the speed and quality of your wireless connection, you can:
• Move your wireless device closer to the AP if the signal strength is low.
• Reduce wireless interference that may be caused by other wireless networks or surrounding wireless
electronics such as cordless phones.
• Place the AP where there are minimum obstacles (such as walls and ceilings) between the AP and
the wireless client.
• Reduce the number of wireless clients connecting to the same AP simultaneously, or add additional
APs if necessary.
• Try closing some programs that use the Internet, especially peer-to-peer applications. If the wireless
client is sending or receiving a lot of information, it may have too many programs open that use the
Internet.
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