ZyXEL Communications Corporation NBG6616 Manuel D’Utilisation

Chapter 26 Troubleshooting

NBG6616 User’s Guide

• Check the settings for QoS. If it is disabled, you might consider activating it.

If you reset the NBG6616, you lose all of the changes you have made. The NBG6616 re-loads its 
default settings, and the password resets to 1234. You have to make all of your changes again.

You will lose all of your changes when you push the RESET button.

To reset the NBG6616:

Make sure the power LED is on.

Press the RESET button for one to four seconds to restart/reboot the NBG6616.

Press the RESET button for longer than five seconds to set the NBG6616 back to its factory-default 
configurations.

If the NBG6616 restarts automatically, wait for the NBG6616 to finish restarting, and log in to the 
Web Configurator. The password is “1234”.

If the NBG6616 does not restart automatically, disconnect and reconnect the NBG6616’s power. 
Then, follow the directions above again.

I cannot access the NBG6616 or ping any computer from the WLAN.

Make sure the wireless LAN is enabled on the NBG6616.

Make sure the wireless adapter on your computer is working properly.

Make sure the wireless adapter installed on your computer is IEEE 802.11 compatible and supports 
the same wireless standard as the NBG6616.

Make sure your computer (with a wireless adapter installed) is within the transmission range of the 
NBG6616.

Check that both the NBG6616 and the wireless adapter on your computer are using the same 
wireless and wireless security settings.

Make sure traffic between the WLAN and the LAN is not blocked by the firewall on the NBG6616.