ZyXEL Communications P-661HNU-Fx User Manual

Chapter 26 Troubleshooting

ADSL Series User’s Guide

I cannot access the Internet.

Check the hardware connections, and make sure the LEDs are behaving as expected. See the Quick 
Start Guide and 

. 

Make sure you entered your ISP account information correctly. These fields are case-sensitive, so 
make sure [Caps Lock] is not on. 

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. 

If you are trying to access the Internet wirelessly, make sure you have enabled the wireless LAN by 
the WPS/WLAN button or the Network Setting > Wireless > General screen.

Turn the ZyXEL Device off. Disconnect all the cables from your device, and follow the directions in 
the Quick Start Guide again. 

If the problem continues, contact your ISP. 

I cannot access the Internet through a DSL connection.

Make sure you configured a proper DSL WAN connection with the Internet account information 
provided by your ISP.

If you set up a WAN connection using bridging service (all LAN ports and WLAN BSSs are bridged to 
one WAN connection), make sure you turn off the DHCP feature in the Home Networking screen 
to have the clients get WAN IP addresses directly from your ISP’s DHCP server.

I cannot create multiple connections of the same type.

Your WAN interface must enable VLAN and fill each WAN connection with different VLAN IDs.

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, and make sure the LEDs are behaving as expected. See the Quick 
Start Guide and 

.

Turn the ZyXEL Device off, wait for one minute and turn it back on.