ZyXEL Communications NBG410W3G Series User Manual

 Chapter 21 Troubleshooting

NBG410W3G Series User’s Guide

1 Check the hardware connections, and make sure the LEDs are behaving as expected. See 

the Quick Start Guide and 

2 If you use PPPoA or PPPoE encapsulation, check the idle time-out setting. Refer to the 

. 

3 Reboot the ZyXEL Device. 
4 If the problem continues, contact your ISP. 

V

The Internet connection is slow or intermittent.

1 There might be a lot of traffic on the network. Look at the LEDs, and check 

. If the ZyXEL Device is sending or receiving a lot of information, try closing 

some programs that use the Internet, especially peer-to-peer applications. 

2 Check the signal strength. If the signal strength is low, try moving the ZyXEL Device 

closer to the AP 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).

3 Reboot the ZyXEL Device. 
4 If the problem continues, contact the network administrator or vendor, or try one of the 

advanced suggestions.

V

The 3G OPERATION LED is off.

• Check the 3G SIM card is correctly inserted. See the Quick Start Guide for instructions.
• Check your 3G settings are correctly configured in the 3G screen, including your PIN, 

user name and password (if required) and telephone number (required). Use the 
information provided by your 3G ISP for your 3G user account. 

• If you have used a different 3G SIM card with this device previously, the 3G card may 

have stored the settings for your previous SIM card. Ensure you have entered the correct 
settings for your current SIM card and click Apply. 

• Check that you have selected the correct 3G interface in the 3G (WAN2) screen.
• Check the HOME screen. An error message displays in the HOME screen if you have 

entered the incorrect PIN in the 3G (WAN2) screen.

• Check your 3G connection status in the HOME screen. If WAN2 has no IP address, click 

Dial to request your 3G ISP for an IP address.

• If you are using an external 3G USB module, check that it is correctly attached.
• Check your 3G account status with your 3G service provider.