3Com OfficeConnect 3CRWE754G72-A/B Manuel d'installation - Page 2

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step

Positioning and Installing your Router

Safety Information

WARNING: Please read the 'Important Safety Information' section in the

Support and Safety Information sheet before you start.

VORSICHT: Bitte lesen Sie den Abschnitt 'Wichtige Sicherheitsinformationen'

sorgfältig durch, bevor Sie das Gerät einschalten.

AVERTISSEMENT: Veuillez lire attentivement la section "Consignes

importantes de sécurité" avant de mettre en route.

When positioning your Router, ensure:

•

The unit is centrally located to the wireless computers that will connect to

the Router. A suitable location might be on top of a high shelf or similar

furniture to optimise wireless connections to computers in both horizontal

and vertical directions, allowing coverage throughout.

•

It is out of direct sunlight and away from sources of heat.

•

Cabling is away from power lines, fluorescent lighting fixtures, and sources

of electrical noise such as radios, transmitters and broadband amplifiers.

•

In order to meet FCC radiation exposure regulations the Router should be

located in a position that maintains a minimum distance of 20 cm

(8 inches) from any personnel (refer to the User Guide for details).

•

Water or moisture cannot enter the case of the unit.

•

Air flow around the unit and through the vents in the side of the case is not

restricted. We recommend you provide a minimum of 25 mm (1 in.)

clearance.

Using the Rubber Feet

Use the four self-adhesive rubber feet to prevent your Router from moving

around on your desk or when stacking with other flat top units. Only stick the

feet to the marked areas at each corner of the underside of your Router.

step

Running the Setup Wizard

1. If you haven't already done so, restart your computer.

2. Launch your web browser and attempt to contact the Router by typing the

following URL in the location bar: http://192.168.1.1.

If you can access the Login page, then your computer has correctly

received an IP address from the Router.

3. Login using the default password <admin>. The Wizard will attempt to

launch automatically, but if it fails, select Wizard from the menu.

4. Where possible, the Wizard will recommend settings for most parameters.

However, there are some settings which you must provide. Most of these

will have been provided to you by your ISP when you set your account up.

Connecting to the Internet

When the Wizard has completed, attempt to browse to an Internet web site,

such as www.3com.com. If you can successfully access this site, then your

computer and Router have been correctly configured.

Connecting Your Router

1. Connect the power adapter to the Router and wait for the WLAN LED to

illuminate.

2. Ensure that your computer is switched on.

3. Connect your computer to one of the 10/100 LAN ports on the Router.

Check that the LAN Port Status LED lights.

4. Connect the RJ11 cable from the ADSL port of the Router, to your ADSL

socket on the wall.

Connecting to a Hub or Switch

To share your Router with more than four users you will need an additional

Hub or Switch. Connect a LAN port of your Router to the hub or switch,

for example, OfficeConnect Dual Speed Switch 8 Plus.

Power

Supply Unit

3Com OfficeConnect

ADSL Wireless 11g Firewall Router

Splitter/

Microfilter Block

Wireless

Users

Your PC

Example Network with OfficeConnect ADSL Wireless 11g Firewall Router

step

Connecting to the Wireless LAN

1. Now you have configured the Router via the wired computer, you can

connect to the Router via a wireless computer.

The Router and wireless clients must have both the same SSID and the

same WEP settings. All wireless clients must use Infrastructure mode.

The default wireless settings for the Router are:

SSID is 3Com

Channel 11

WEP Encryption is off

2. If you do not have a Wireless LAN you can use the Router's default

settings. Ensure that your wireless clients have the default SSID, channel

and WEP as detailed above.

If you have an existing Wireless LAN, configure the Router to use the same

SSID and WEP settings to be compatible with your existing wireless

network.

SSID

Channel Number

3. If your computer has both a wired and wireless NIC installed, you must

ensure that only one NIC is used to communicate with the LAN. To use the

wireless NIC, unplug the Ethernet cable and reboot your computer.

4. Launch your web browser and attempt to browse to an internet web site

such as www.3com.com. If you can successfully access this site, then your

wireless computer and Router have been successfully configured.

5. 3Com strongly recommends that you enable WEP encryption to improve

the security of your wireless network and you change the SSID to

something other than the default. Consult the on line help or the User

Guide for details.

step

Installing a Splitter and Micro-filter

A splitter and micro-filter allow you to use your Router and telephone at the

same time. The splitter connects to the ADSL wall connection and then

provides 2 connectors:

a. A RJ11 connector which connects to the Router with the RJ11 cable

b. A telephone jack connector which can be connected to your telephone

There must also be a micro-filter between the splitter and the telephone. The

micro-filter ensures that DSL data signal does not interfere with the telephone

voice signal. A micro-filter must be installed inline with each telephone to

prevent signal interference. Splitters are now available with built in micro-filters

which simplifies the set-up as shown in the diagram below. Splitters and

micro-filters can be obtained from your ISP or computer store.

Telephone

Socket

Problem Solving

If you are experiencing difficulties with your installation, try the following:

• Ensure all networking equipment is switched on.

The Router should be showing a green Power LED. If it is not, check the

power adapter connection. Do not use any power adapter with your Router

other than the one supplied.

• Ensure that the computer is configured to the Router.

The Router should be displaying a green LAN Status LED. If it is not, check

that the computer is connected to one of the Router's LAN ports with an

Ethernet cable.

• Ensure that you do not have a web proxy enabled on your computer.

Go to the Control Panel and click on Internet Options. Select the

Connections tab and click on the LAN Settings button at the bottom. Make

sure that the Use Proxy Server option is unchecked.

• If you are unable to access the Router's Web interface.

Launch a web browser and enter http://192.168.1.1. If you chose a

different IP address, use that instead. Ensure that you include the http://

prefix.

• Ensure your computer is configured correctly.

Make sure that the computer obtains an IP address automatically from the

Router's DHCP server.

step

ISP Connection Methods

Before you can configure the Router, you need to know the IP allocation

method used by your ISP. There are 4 different methods the Router can use to

connect to the internet, as described below. For all methods you need to know

the VPI (Virtual Path Identifier), VCI (Virtual Channel Identifier) and the

Encapsulation (LLC or VC Mux). The Router defaults for the VPI and VCI should

cater for most ISPs. Your ISP can provide you with the required information.

1. PPPoE

To configure the Gateway you will need to know the Username and

Password to login to you ISP account. If you have been using a PPPoE client

on your PC, then you can disable it, as it is no longer needed. If your ISP

provides you with a static IP address, then this can be typed in the Internet

Settings section of the Router web management screens. Otherwise, your

IPS will automatically assign your Router an IP address.

2. PPPoA

This is similar to PPPoE but is used mainly in the UK. To configure the

Gateway you will need to know the Username and Password to login to

your ISP account. If Your ISP provides you with a static IP address, then this

can be typed into the Internet Settings section of the Router web

management screens. Otherwise, your ISP will automatically assign your

router an IP address.

3. Bridge Mode for a Single PC (RFC 1483 Bridging Mode)

In this mode, the Router is set into a Bridging mode to connect the LAN

and WAN networks together. Traffic is limited between the 2 networks

based on hardware addresses and so limits the LAN side to a single PC.

4. Routing Mode over ATM (RFC 1483 Bridging Mode)

The Routing mode over ATM means that the Router has a fixed IP address

to connect to the internet. Your ISP will provide the Router with a fixed IP

address, the subnet mask and the ISP's Gateway address. This information

must be entered into the Internet Settings section of the Router web

management screens.

DSL Internet Connections.

• If you have an existing DSL line and have PPPoE client software installed on

your computer, you will need to disable it.

• It is important that you set up the correct VPI/VCI parameters and

Encapsulation (LLC or VC Mux) method to match up with your DSL line.

These parameters can be obtained from your ISP.

• Check that the PPPoE/PPPoA settings are correct. For example, Username,

Password and IP address configuration.

• You must use a splitter to separate the Router from your telephone. A

micro-filter can then be used in line with the telephone to ensure that the

Router and telephone do not interere with each other. Ensure that a micro-

filter is not fitted directly inline with the Router.

Wireless Configuration. If you are unable to access the wireless LAN.

• Ensure that the wireless client is set to infrastructure mode.

• If you have a wired and wireless NIC in the same computer, ensure that the

wired NIC is disabled.

• Ensure that the SSID is the same for the wireless client and the Router.

• Ensure that the Router WLAN LED is on. If not, go to the Wireless Settings

menu and enable Wireless Networking.

• Ensure that WEP (Wired Equivalent Privacy) is the same for the wireless client

and the Router. If there are problems, turn WEP off in the client and the

Router until you have established a wireless connection.