ZyXEL Communications Corporation PLA4231 Manuel D’Utilisation

 Chapter 14 LEDs and Troubleshooting

PLA4231 User’s Guide

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. 

• Position the antennas for best reception. If the AP is placed on a table or floor, point the antennas 

upwards. If the AP is placed at a high position, point the antennas downwards. Try pointing the 
antennas in different directions and check which provides the strongest signal to the wireless 
clients. 

I don’t know the IP address of my PLA4231.

The default IP address is 192.168.1.2.

If you changed the IP address and have forgotten it, 

• and your PLA4231 is a DHCP client, you can find your IP address from the DHCP server. This 

information is only available from the DHCP server which allocates IP addresses on your network. 
Find this information directly from the DHCP server or contact your system administrator for 
more information.

• reset your PLA4231 to change all settings back to their default. This means your current settings 

are lost. See 

 for information on resetting your PLA4231.