ZyXEL Communications Corporation G-220F Manuel D’Utilisation

ZyXEL G-220F User’s Guide

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Chapter 6 Troubleshooting

Table 21   Troubleshooting Link Quality 

The link quality 

and/or signal 

strength is poor all 

the time.

Search and connect to another AP with a better link quality using the Site Survey 

screen.
Move your computer closer to the AP or the peer computer(s) within the 

transmission range.
There may be too much radio interference (for example microwave or another AP 

using the same channel) around your wireless network. Relocate or reduce the 

radio interference.

Table 22   Troubleshooting Communication Problem 

In wireless station 

mode, the 

computer with the 

ZyXEL G-220F 

installed cannot 

communicate with 

the other 

computer(s).

In Infrastructure Mode
•

Make sure that the AP and the associated computers are turned on and 

working properly.  

•

Make sure the ZyXEL G-220F computer and the associated AP use the same 

SSID.

•

Change the AP and the associated wireless clients to use another radio 

channel if interference is high.

•

Make sure that the computer and the AP share the same security option and 

key. Verify the settings in the Profile Security Settings screen.

In Ad-Hoc (IBSS) Mode
•

Verify that the peer computer(s) is turned on.

•

Make sure the ZyXEL G-220F computer and the peer computer(s) are using 

the same SSID and channel.

•

Make sure that the computer and the peer computer(s) share the same 

security settings.

•

Change the wireless clients to use another radio channel if interference is high.

In access point 

mode, the wireless 

station(s) cannot 

associate to the 

ZyXEL G-220F.

Verify that the computer with the ZyXEL G-220F installed is turned on.
Make sure the wireless station(s) uses the same SSID as the ZyXEL G-220F.
Make sure the wireless station(s) uses the same security settings.
Verify that the wireless station(s) is not blocked in the MAC Filter screen.