3Com OfficeConnect 3CRWE53172 User Manual

Also see for OfficeConnect 3CRWE53172: Datasheet Installation guide

Contents

Alert LED 87correspond to the Gateway channel number. Please refer to yourWireless computer adapter documentation and vendor to do this.■ Speed of connection: The 802.11b and 802.11g standards willautomatically choose the best speed depending on the quality of yourconnection. As the signal quality weakens then the speed falls back toa lower speed. The speeds supported by 802.11g are 54 Mbps,48 Mbps, 36 Mbps, 24 Mbps, 18 Mbps, 12 Mbps, and 6 Mbps. Thespeeds supported by 802.11b are 11 Mbps, 5.5 Mbps, 2 Mbps and1 Mbps. Note that when an 802.11g client is connected to an802.11b Access Point, it will only operate at the 802.11b supportedspeeds. In general the closer you are to the Gateway the better thespeed. If you are not achieving the speed you had anticipated then trymoving the antenna on the Gateway or moving the Wirelesscomputer closer to the Gateway. In an ideal network the Gatewayshould be located in the centre of the network with Wirelesscomputers distributed around it. Applications are generally availablewith the computer wireless card to carry out a site survey. Use thisapplication to find the optimal siting for your wireless computer.Consult your Computer Card documentation and vendor for moredetails.Alert LED The Alert LED will flash when the Gateway unit is first powered up whilethe system software checks the hardware for proper operation. Once theGateway has started normal operation, the Alert LED will go out.■ If the Alert LED does not go out following start up, but illuminatescontinuously, this indicates that the software has detected a possiblefault with the hardware. Remove power from the Gateway, wait 10seconds and then re-apply power. If the Alert LED comes oncontinuously again, then a fault has been detected. Locate the copy ofthe Gateway software on the accompanying CD-ROM or 3Com website (http://www.3com.com) and upload it to the Gateway to see ifthis clears the fault (refer to “Recovering from Corrupted Software”below). If this does not fix the problem, contact your supplier forfurther advice.■ During normal operation, you may notice the Alert LED lighting brieflyfrom time to time. This indicates that the Gateway has detected ahacker attack from the Internet and has prevented it from harmingyour network. You need take no specific action on this, unless youdecide that these attacks are happening frequently in which case you