116Dealing with Problems (Advanced)Cannot communicate with the accesspointz Confirm that the access point is on.z Confirm that the following settings match with the access point. If thesesettings do not match, confirm the access point settings, and do the settings onthe computer again.• Network name (SSID or ESSID)• Data encryption• Network authentication• Network key• Key indexz Using the following procedure, confirm whether the computer’s protocol settingsare correct (only when using TCP/IP).A When is displayed on the taskbar:Right-click , and select [Open the Network Connection].When is not displayed on the taskbar:Select [start] - [Control Panel] - [Network and Internet Connections] -[Network Connections].B Right-click [Wireless Network Connection], and select [Properties] -[General] - [Internet Protocol (TCP/IP)] - [Properties].C Confirm the protocol settings, such as IP address, and do the settingsproperly again.z Depending on the access point and settings, access may not be acceptedunless the computer's MAC address is registered beforehand. In this case,check the computer's MAC address (Î page 114) and register it according tothe operating instructions of the access point.Communication speed decreases z Communication speed may decrease if, aside from the access point to whichthis computer is connected, there is another access point nearby using thesame channel or a similar channel. Change the channel on the connectionaccess point, and check to see if the speed recovers. Confirm method forchanging channels using the access point manual.z The rate may drop while a microwave oven is being used.z When using a wireless LAN in an environment that combines bothIEEE802.11g and IEEE802.11b, communication speed when usingIEEE802.11g may decrease. Networking: Wireless LAN (only for models with wireless LAN)