D-Link DSL-2740B manual Location and Wireless Operation

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DSL-2740B Wireless ADSL Router User Guide

Location and Wireless Operation

Many physical environmental factors can impact wireless networks. Radio waves are used to carry the encoded data between devices. These radio transmissions can become degraded due to signal attenuation, multi-path distortion and interference or noise. Attenuation simply means that the strength of the signal weakens with the distance it travels, even if the transmission path is unobstructed. Multi-path distortion occurs when radio signals bounce off objects like walls, ceilings, metal appliances, etc. This may cause a signal to be duplicated, with each separate yet identical signal arriving at a receiver at different times. Interference and noise from electrical devices such as microwave ovens, fluorescent lights, automobile engines and other radio emitting devices can cause signal degradation. With all this in mind, choose a location for all your access points including the DSL-2740B.

The access point can be placed on a shelf or desktop, ideally you should be able to see the LED indicators on the front if you need to view them for troubleshooting.

Wireless networking lets you access your network from nearly anywhere you want. However, the number of walls, ceilings, or other objects that the wireless signals must pass through can limit signal range. Typical ranges vary depending on the types of materials and background RF noise in your home or business. To range and signal strength, use these basic guidelines:

1.Keep the number of walls and ceilings to a minimum: The signal emitted from Wireless LAN devices can penetrate through ceilings and walls. However, each wall or ceiling can reduce the range of Wireless LAN devices from 1 to 30M. Position your wireless devices so that the number of walls or ceilings obstructing the signal path is minimized.

2.Consider the direct line between access points and workstations: A wall that is 0.5 meters thick, at a 45- degree angle appears to be almost 1 meter thick. At a 2-degree angle, it is over 14 meters thick. Be careful to position access points and client adapters so the signal can travel straight through (90º angle) a wall or ceiling for better reception.

3.Building Materials make a difference: Buildings constructed using metal framing or doors can reduce effective range of the device. If possible, position wireless devices so that their signal can pass through drywall or open doorways, avoid positioning them so that their signal must pass through metallic materials. Poured concrete walls are reinforced with steel while cinderblock walls generally have little or no structural steel.

4.Position the antennas for best reception: Play around with the antenna position to see if signal strength improves. Some adapters or access points allow the user to judge the strength of the signal.

5.Keep your product away (at least 1-2 meters) from electrical devices: Position wireless devices away from electrical devices that generate RF noise such as microwave ovens, monitors, electric motors, etc.

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Contents DSL-2740B WirelessADSL2+ Router User Guide FCC Warning CE Mark WarningTable Of Contents Save / REBOOTt 104 About This User Guide Installation OverviewSetup Wizard Packing List Installation NotesAdditional Software IP Address Security ProtocolRadius server Port KeyDSL-2740B LAN IP addresses forLAN Subnet Mask for Ethernet NICRouter Description and Operation 802.11n-draft WirelessRouter Features Standards Compatibility and Compliance Internet PowerFront Panel Display Connect network cables Rear Panel ConnectionsWireless Security Setting Up a Wireless NetworkRadio RangeLocation and Wireless Operation Factory Reset Button Power on RouterConnect Router to Ethernet Hub or Switch to Router ConnectionConnect Adsl Line Computer to Router Connection DSL-2740B Wireless Adsl Router User Guide Configuration Summary Configuring IP Settings on Your ComputerEnter Password Access the Configuration ManagerLogin to Home Web Manager First Time Log On Configure the RouterWizard Using the Setup Wizard WAN Settings PVC SettingsUsing the Setup Wizard WAN Settings Choose Connection Type DSL-2740B Wireless Adsl Router User Guide Using the Setup Wizard For PPPoE/PPPoA connection Dial on demand Enable PPP Debug ModePPP IP extension Use Static IP AddressUsing the Setup Wizard For Dynamic IP 1483 Bridge connection Select the specific Connection Type and Encapsulation Mode Using the Setup Wizard For Static IP Address IPoA connection Using the Setup Wizard For Bridge Mode connections Using the Setup Wizard For LAN Settings Using the Setup Wizard For Wireless LAN Settings Using the Setup Wizard Finish and Restart Adsl Virtual Circuit Service Category ATM SettingsAdsl Settings Window Default Route Router SettingsFirewall Primary DNS AddressWlan Wlan Settings WindowLAN LAN Settings Window Igmp Snooping UPnPDNS DNS Configuration windowPage Tools Status SetupAdvanced Advanced Adsl Window Advanced AdslAdvanced Wlan Window Advanced WlanWEP Wlan SecurityWlan Security Window WEP 802.1xWlan Security Window WPA-PSKWlan Security Window WPA-PSK WPA Wi-Fi Protected AccessWlan Security Window WPA Wlan FilterWlan Filter Window Wlan BridgeWlan Bridge Window Wlan QOS Wlan QoS Window Firewall Firewall Window Virtual Server Server IP Address Port TriggeringExternal Port Start/End ProtocolPort Triggering Window DMZ Window DMZOpen Protocol Opened protocol for remote users Outgoing IP Filter Outgoing IP Filter Window Incoming IP Filter Incoming IP Filter Window Bridge FilterBridge Filter Window Parent Control Parent Control Window URL FilterURL Filter Window Quality of ServiceQuality of Service Window Routing Routing Window RIPRIP Window RIP Parameters DescriptionInterface Port MappingVersion OperationPort Mapping Window Port Mapping Window Tools Diagnostics WindowBackup Settings window Backup SettingsUpdate Settings Window Update SettingsRestore Default TR069 Client Restore Default WindowTR-069 Client Window Snmp ConfigurationDdns Snmp Configuration WindowDdns Window Time Time Window Access ServiceAccess Service Window Access IP Password Window PasswordAccess IP Window Save / REBOOTt Update FirmwareSave / Reboot Window Device Info window Device InfoAdsl Window LAN Window WANWAN Window ATMATM Window RouteRoute Window ARPARP Window Dhcp ClientsDhcp Clients window Wlan StationWlan Station Window System LOGSystem LOG window System Log Category ParametersPage System LOG window Adsl Standards ADSL2 Standards Technical SpecificationsOutput 12V AC, 1200mA Input 120V AC 60HzWatts max To 40CWireless Control Panel Configure Windows XP for DhcpClick Network Connections Click Network and Internet ConnectionsSelect Obtain an IP address Click PropertiesWindows Configure Windows 2000 for DhcpConfigure Windows ME for Dhcp Configure Windows 95 and Windows 98 for DhcpWindows 95 and Windows Windows MEWindows NT 4.0 Workstations Configure Windows NT 4.0 for DhcpIn-line low pass filter In-Line FilterPort Filter Three Port Filter