3Com OfficeConnect 3CRWE454A72 User Manual

Also see for OfficeConnect 3CRWE454A72: Installation guide Technical brief

Wireless Networking 51■ Verify that your wireless computers are configured to work inInfrastructure mode and not Ad Hoc mode. The Access Point isdesigned to operate in Infrastructure mode. Ad Hoc mode is notsupported by the Access Point.■ If you have a wired and wireless NIC in the same computer, ensurethat the wired NIC is disabled.■ Check the status of the Access Point Wireless LED, it should be lit ifwireless is enabled and will flash when there is wireless activity. If notlit go to “Wireless Settings” on page 33 and enable wirelessnetworking.■ Ensure that the TCP/IP settings for all devices are correct.■ Ensure that the Wireless Clients are using the same SSID or ServiceArea Name as the Access Point. The SSID is case-sensitive■ Ensure that you are using the same level of security on all of yourwireless computers (None, 40/64 or 128 bit) and that all devices areusing the same keys, and the same order of keys where appropriate.■ Ensure that you have the Wireless computer enabled in the list ofallowed MAC addresses if you are using Wireless Connection controlon the Access Point.■ If you are having difficulty connecting or are operating at a low speedtry changing the antenna positions on the rear of the Access Point. Formore effective coverage you can try reorientating your antennae.Place one antenna vertically and one horizontally to improve coverage.Additionally consider moving the wireless computer closer to theAccess Point to confirm that the building structure or fittings are notadversely affecting the connectivity. If this resolves the problemconsider relocating the Wireless computer or select Clear ChannelSelect on the Access Point.■ Sources of interference: The 2.4Ghz ISM band is used for 802.11b and802.11g. This is generally a licence free band for low powerapplications, and you may have other devices at your location thatoperate in this frequency band. You should take care to ensure thatthere are no devices like microwave ovens for example close to theAccess Point or wireless computers as this could affect receiversensitivity and reduce the performance of your network. If you areunsure try relocating both the wireless computers and the AccessPoint to establish whether this problem exists.■ Most wireless computer Adapters will scan the channels for thewireless Access Point. If a wireless computer has not located the