3Com ADSL Modem Ethernet Bedienungsanleitung

http://www.3com.com

3Com HomeConnect

ADSL Modem Ethernet

Installation Guide

Version 1.1

Part No. 1.024.2356-00

Published Sept. 1999

3Com Corporation ■3800 Golf Road ■Rolling Meadows, Illinois ■60008

reproduced in any form or by any means or used to make any derivative work (such as translation,

transformation, or adaptation) without written permission from 3Com Corporation.

3Com Corporation reserves the right to revise this documentation and to make changes in content

from time to time without obligation on the part of 3Com Corporation to provide notification of such

revision or change.

3Com Corporation provides this documentation without warranty of any kind, either implied or

expressed, including, but not limited to, the implied warranties of merchantability and fitness for a

particular purpose. 3Com may make improvements or changes in the product(s) and/or the program(s)

described in this documentation at any time.

UNITED STATES GOVERNMENT LEGENDS:

If you are a United States government agency, then this documentation and the software described

herein are provided to you subject to the following:

United States Government Legend: All technical data and computer software is commercial in

nature and developed solely at private expense. Software is delivered as Commercial Computer

Software as defined in DFARS 252.227-7014 (June 1995) or as a commercial item as defined in

FAR 2.101(a) and as such is provided with only such rights as are provided in 3Com’s standard

commercial license for the Software. Technical data is provided with limited rights only as provided in

DFAR 252.227-7015 (Nov 1995) or FAR 52.227-14 (June 1987), whichever is applicable. You agree not

to remove or deface any portion of any legend provided on any licensed program or documentation

contained in, or delivered to you in conjunction with this Installation Guide.

[Portions of this documentation are reproduced in whole or in part with permission from (as

appropriate).]

Unless otherwise indicated, 3Com registered trademarks are registered in the United States and may or

may not be registered in other countries.

3Com and the 3Com logo are registered trademarks of 3Com Corporation.

Intel and Pentium are registered trademarks of Intel Corporation. Microsoft, MS-DOS, Windows, and

Windows NT are registered trademarks of Microsoft Corporation.

Other brand and product names may be registered trademarks or trademarks of their respective

holders.

FCC INFORMATION

This device complies with Part 15 of the FCC rules. Operation is subject to the following two

conditions:

1This device may not cause harmful interference, and

2This device must accept any interference received, including interference that may cause undesired

operation.

This device has been tested to comply with FCC standards and is acceptable for home or office use.

The 3Com HomeConnect has been determined to comply with Part 15 of the FCC rules under the

manufacturer’s Declaration of Conformity procedures in Title 47 of the Code of Federal Regulations,

section 2.906 (a). The party responsible for the Declaration of Conformity is:

3Com Corporation

3800 Golf Road

Rolling Meadows, IL 60008

(847) 262-5000

www.3com.com

Changes or modifications to this device not expressly approved by the party responsible for compliance

could void the user’s authority to operate this device.

The manufacturer’s Declaration of Conformity implies that this device was tested at a laboratory

recognized by the FCC and found to meet the limits for a class B digital device. This device has not been

certified by the FCC.

1INTRODUCTION TO THE

HOMECONNECT ADSL

MODEM ETHERNET

Introduction

■Welcome to the 3Com HomeConnect ADSL Modem

Ethernet

■What’s Included in the Package

■Installation

■Operation

■Pin Assignments

■Important Safety Instructions

■Technical Support

■FCC Information

■Warranty Information

Welcome to the 3Com HomeConnect ADSL Modem

Ethernet The 3Com HomeConnect ADSL Modem Ethernet is your

passport to full internetworking and high-speed

multimedia communications from your home or office to a

corporate network or the Internet.

With the ADSL Modem Ethernet connected to your

computer, and an account activated by your network

service provider, the ADSL Modem Ethernet provides a

lightning-fast Digital Subscriber Line (DSL) connection

between your PC or LAN and the service provider’s

network of high-speed digital facilities.

This booklet contains the information you need to install,

use, and care for your 3Com HomeConnect ADSL Modem

Ethernet.

1-4 CHAPTER 1: INTRODUCTION TO THE HOMECONNECT ADSL MODEM ETHERNET

What’s Included in the Package?

First, check your package to be sure it’s complete. You

should have the following items:

■The 3Com HomeConnect ADSL Modem Ethernet

■An AC-to-DC power adapter and cable

■RJ45 to RJ45 Ethernet Cable

■Console Cable (DB-9 — DB-9)

■RJ11 to RJ11 telephone cable for connection to the DSL

data line

■Ferrite clamp

■Installation Guide

■CD-ROM containing the printable CLI User’s Guide,and

other utilities

If anything is missing, contact 3Com Customer Support.

Installation of the 3Com HomeConnect ADSL Modem

Ethernet For protection against damage due to local lightning strikes

and other electrical surges, we recommend that you install

an AC surge arrestor in the AC outlet to which this device is

connected.

Below is a representation of the rear panel of your ADSL

Modem Ethernet:

Connecting the HomeConnect ADSL Modem Ethernet is

easy. Just follow these steps:

Note: Do not plug in the HomeConnect ADSL Modem

Ethernet until you have carefully read all instructions below

and have set the DIP switches on the back of your unit to

the desired configuration.

1Place your HomeConnect ADSL Modem Ethernet in a

convenient spot where all of the cables can reach it, and

Installation of the 3Com HomeConnect ADSL Modem Ethernet 1-5

where air can flow freely through the air holes in the unit’s

sides and top.

2Connect one end of the ADSL cable (RJ-11) to the

connector on the rear of the HomeConnect ADSL Modem

Ethernet marked ADSL and connect the other end to your

ADSL wall jack (or Network Interface Device (NID)).

CAUTION: The DSL line outlet uses the same type

connector as a normal voice telephone line. Take care not

to accidentally connect your HomeConnect ADSL Modem

Ethernet to a telephone outlet, and never connect a phone

to your HomeConnect ADSL Modem Ethernet.

3Select the DIP switch mode (this selects the boot option)

you want to use from the table below (Table 1.1) and flip

the appropriate switches.

4Connect the Ethernet cable to the Ethernet port on your

Modem and the other end to the PC or network hub.

Do not confuse this cable with the RJ-11 ADSL cable. The

two RJ jacks look alike.

5Install the ferrite clamp: Adding the ferrite clamp onto your

Ethernet cable will minimize electromagnetic interference

from your ADSL modem. In order to ensure compliance

with EN55022 (CISPR 22) and FCC Part 15 Class B emission

requirements, attach the ferriteclamp to the Ethernet cable

as shown below.

The clamp will be most effective when placed closest to the

end of the Ethernet cable (see diagram below) which is

connected to your modem. Place the open clamp around

the cable portion close to the jack which will be connected

to the ADSL Modem Ethernet unit. Close the clamp around

the cord, making sure the two small clips are completely

closed (they will be flush with the clamp body). The clamp

is now properly attached to the Ethernet cable.

1-6 CHAPTER 1: INTRODUCTION TO THE HOMECONNECT ADSL MODEM ETHERNET

6Determine if you want the MDI/X switch “out” or “in”. The

MDI/X Switch swaps the transmit (Tx) and receive (Rx)

signal pairs on the Ethernet port. The MDI/X button must

be pressed “in” to use the port for connection to a

workstation. When the MDI/X button is “out”, you can

connect to a non-cascade port on another hub.

7Plug one end of the power adapter into a wall socket, and

connect the other end of the cable to the rear of the

HomeConnect ADSL Modem Ethernet.

What are the Boot Options?

The 3Com HomeConnect ADSL Modem Ethernet has a set

of 4 numbered DIP (Dual Inline Package) switches that can

be used to select a pre-programmed configuration. One of

the pre-programmed configurations may match the

settings required by your service provider. Please

check with your service provider. If so, installation is as

simple as setting the DIP switches and powering on the

unit. If not, you can still easily configure the unit using a

serial console connection.

The following DIP switch combinations are valid:

Boot options only affect the operation of a unit which does

not presently have any configuration settings (i.e., the unit

is new, the Configuration Reset button has been pressed,

Table 1-1 DIP Switch Modes

DIP Switch Mode

1 234 VPI/VCI

off off off off Unconfigured Mode (CLI

configuration required)

ON off off off 0/33

off ON off off 0/35

ON ON off off 8/35

off off ON off 0/38

ON off ON off 0/33-35

off ON ON off 0/33-38

all other settings Unconfigured Mode (CLI

configuration required)

Installation of the 3Com HomeConnect ADSL Modem Ethernet 1-7

or a ‘delete configuration’ command has been executed

from the CLI).

Changing Boot Options/Resetting Your Modem

You may choose a different boot option after you have

already selected one previously and set up your unit.

To reset your unit and select a different boot option:

1Set the appropriate DIP switch to match the configuration

information provided by your service provider.

2Unplug the power cable from your 3Com HomeConnect

ADSL Modem Ethernet.

3Press the Configuration Reset button for 5 seconds while

plugging the power cable back in.

Following the above steps will power on the 3Com

HomeConnect ADSL Modem Ethernet with the desired

boot option and erase all previous parameters.

Unconfigured Mode

If you have not selected one of the preconfigured boot

options, the unit will power up unconfigured. To enter

configuration information, you must connect a PC running

terminal emulation software (e.g., Hyperterminal, available

on most PCs) to the unit’s console port. Connect the 9-pin

console cable from the terminal to the back of the unit.

Configure your terminal with the following serial port

settings: 9600-N-8-1.

Refer to the Command Line Interface (CLI) Guide for details

on accessing this interface.

The 3Com HomeConnect ADSL Modem Ethernet bridges

traffic between ATM PVCs (WAN ports). To configure a

WAN port, use the following command syntax:

set port <port #> vpi <vpi #> vci <vci #>

where:

■port # is the WAN port to use (2-9)

■vpi # is the VPI of the ATM PVC

■vci # is the VCI of the ATM PVC

1-8 CHAPTER 1: INTRODUCTION TO THE HOMECONNECT ADSL MODEM ETHERNET

Enable the port using the command:

enable port <port #>

Save the configuration using the command:

save all

For example, if your service provider instructed you to use

VPI 0 and VCI 44, you would enter the following CLI

commands:

set port 2 vpi 0 vci 44

enable port 2

save all

The CLI provides extensive configuration and monitoring

capabilities. For more information, install the CLI User’s

Guide from the Installation CD supplied with your unit.

OperationAfter you have properly connected your HomeConnect

ADSL Modem Ethernet, and your new DSL link has been

activated by your Network Service Provider, all you need to

do is enjoy the high-speed DSL access to your network.

There are no controls or adjustments to make. Just make

sure that power is provided to your ADSL Modem Ethernet

at all times, and that adequate ventilation is maintained.

The unit will take one minute to boot up when you power

it on. If power to the unit is interrupted, the ADSL Modem

Ethernet will automatically reconnect to the network when

power is restored. The connection process is not

instantaneous, however, and it may take several minutes

for your service-provider’s central-office equipment to

perform its periodic check of your line and then do the

necessary “handshaking” to restore full communication.

LED Indicators

There are four indicator lights (LEDs) on the front of the

ADSL Modem Ethernet. The Alert and ADSL statuscan light

red, orange, or green, depending on the status of the unit.

The PWR and LAN Status LEDs can only light green.

Operation 1-9

Alert Indicator

The Alert Indicator is used to indicate the configuration and

software download status of the modem.

Immediately after power-up, the indicator will light orange

for one second. Then, if the Configuration Reset button

has been pressed while powering-on the unit, the indicator

will flash green five times a second for four seconds.

In any case, the indicator will then flash orange twice a

second for four seconds during which the modem will

accept software download through the serial port (see

Chapter 5 of the CLI User’s Guide for a description of the

Software Update process).

Approximately ten seconds after power-up, the Alert

Indicator will begin flashing green twice a second while the

unit’s software is loading. It takes about 30 seconds for the

unit to complete downloading. Once the download is

complete, the indicator will be turned off.

PWR Indicator

The PWR Indicator lights green when power is applied. If

this indicator is off, check to be sure that the power cable is

connected at the rear panel, and that the power adapter is

plugged in.

LAN Status Indicator

The LAN Status Indicator lights green when your modem is

connected to your PC or Ethernet LAN.

If the connection to the LAN is broken, the indicator will go

off and remain off. Be sure that the computer or hub cables

are properly connected at the rear panel and at your PC or

Ethernet hub. Also, check to make sure that the MDI/X

(Ethernet Crossover) switch is properly set.

1-10 CHAPTER 1: INTRODUCTION TO THE HOMECONNECT ADSL MODEM ETHERNET

When data traffic is passing through the Ethernet port, the

LED will rapidly flash green.

ADSL Status Indicator

After power-up and software downloading, the ADSL

Status Indicator will light red until the modem begins to

synchronize with the central office equipment. If the

indicator remains red for an extended period, you should

check to ensure that the ADSL line is properly plugged into

the rear panel jack.

Once training begins, the indicator will flash orange once

per second. When the unit has properly synchronized with

the central office the indicator will light green. During data

transfer, the indicator will rapidly flash green.

Pin Assignments

Pin assignments for the different jacks located on the back

of your HomeConnect ADSL Modem Ethernet are listed

below for your information.

ADSL Interface (RJ-11 jack)

Pin 1 — (Not Used)

Pin 2 — Ring

Pin 3 — Tip

Pin 4 — (Not Used)

LAN Interface (RJ-45 jack, with MDI/X set to OUT)

Pin 1 — Transmit Data +

Pin 2 — Transmit Data -

Pin 3 — Receive Data +

Pin 4 — NC (no connect)

Pin 5 — NC

Pin 6 — Receive Data -

Pin 7 — NC

Pin 8 — NC

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