3Com OfficeConnect 3C8861 Manual de usuario

http://www.3com.com/

OfﬁceConnect

56K LAN Modem

3C886

User Guide

Part No. 984/000027-2

Published March 1999

3Com Corporation

5400 Bayfront Plaza

Santa Clara, California

95052-8145

3Com Corporation, 1999.

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

transformation, or adaptation) without 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 restricted rights:

For units of the Department of Defense:

Restricted Rights Legend:

Use, duplication, or disclosure by the Government is subject to restrictions as set

forth in subparagraph (c) (1) (ii) for Restricted Rights in Technical Data and Computer Software Clause at 48

C.F.R. 52.227-7013. 3Com Corporation, 5400 Bayfront Plaza, Santa Clara, California 95052-8145.

For civilian agencies:

Restricted Rights Legend:

Use, reproduction, or disclosure is subject to restrictions set forth in subparagraph

(a) through (d) of the Commercial Computer Software - Restricted Rights Clause at 48 C.F.R. 52.227-19 and

the limitations set forth in 3Com Corporation’s standard commercial agreement for the software.

Unpublished rights reserved under the copyright laws of the United States.

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

not be registered in other countries.

3Com and OfﬁceConnect are registered trademarks of 3Com Corporation.

IBM is a trademark of International Business Machines Corporation. Macintosh is a registered trademark of

Apple Computer Corporation. UL is a trademark of Underwriters Laboratory, Inc. Pentium is a registered

trademark of Intel Corporation. Windows and Windows NT are registered trademarks of Microsoft

Corporation. LZS is a registered trademarks of Stac, Inc. Compuserve is a registered trademark of

Compuserve Interactive Services, Inc. 3ComFacts is a service mark of 3Com.

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

Guide written by Eric Heller

MPORTANT

AFETY

NFORMATION

WARNING:

Warningscontaindirectionsthatyoumustfollowforyour personalsafety.Follow

all instructions carefully.

Please read the following information carefully and thoroughly before installing the unit:

■

Take exceptional care during the installation and removal of the unit.

■

Use the power adapter supplied with the unit to ensure compliance with national safety

standards.

■

Disconnect the power adapter before moving the unit. Power can only be disconnected

from the unit by removing the power adapter from the unit or from the socket outlet.

■

There are no user-replaceable fuses or user-serviceable parts inside the unit. If there is a

physical problem with the unit that cannot be solved with problem solving actions in this

guide, contact the 3Com reseller from whom the equipment was purchased.

■

If the units are stackable, only stack similar units.

Additional Safety

Information

■

Onlyconnectapparatuscomplyingwiththerelevantinterfacerequirementsto theportson

this unit.

■

Retain this user’s guide for later use and pass it on in the event of change of ownership of

the unit.

■

Protecttheunitfromsudden,transientincreasesanddecreasesinelectricalpowerbyfitting

an in-line surge suppressor or uninterruptable power supply.Productsmanufacturedbyus

are safe and without risk provided they are installed, used and maintained in good working

order in accordance with our instructions and recommendations.

■

Ifanyofthefollowingconditionsoccur,isolatetheelectricity supplyandreferto your3Com

reseller.

■

If the case or cover is not correctly fitted or if it is damaged.

■

If the unit begins to make an odd noise, smell or smoke.

■

If the unit shows signs of a distinct change in performance.

■

Never install telephone wires during a lightning storm, or install telephone connection

sockets in wet locations, unless the socket is specifically designed for wet locations.

■

Do not touch uninstalled telephone wires or terminals unless the telephone line has been

disconnectedatthenetworkinterface.Alwaysexercisecautionwheninstallingormodifying

telephone lines.

■

Donotuse a telephone, whichis connected to theunit, to report agas leak in thevicinity of

the leak.

■

Do not spill food or liquids on the unit. If the unit gets wet, isolate the electrical supply and

contact your 3Com reseller.

■

Do not push any objects into the openings of the unit. Doing so can cause fire or electric

shock by shorting out internal components.

■

Only equipment approved for use by your telephone company can be connected to the

telephone port.

■

Avoidusinga telephone, whichis connected to theunit (other thana cordless type), during

an electrical storm.

■

Equipment connected to the telephone port must be located in the same building as the

unit.

■

Besure nothing restson the unit’ssystem cablesand thatthe cables arenot locatedwhere

they can be stepped on and cause damage to the unit.

■

Keep the unit away from radiators and heat sources. Allow 1 inch (25mm) around the unit

to provide adequate air circulation.

■

Install the unit in a clean area that is free from dust or extreme temperatures.

■

Allow a clearance gap of at least a 6 inches (150 mm) from the rear panel of the unit, to

allow for cable access.

■

Interconnecting directly, or by way of other apparatus, to ports complying with SELV

requirementsmay produce hazardousconditions onthe network.Advice shouldbe sought

from a competent engineer before such a connection is made.

ABLE

ONTENTS

MPORTANT

AFETY

NFORMATION

Additional Safety Information 3

BOUT

HIS

UIDE

Introduction 11

How to Use This Guide 11

Conventions 11

Year 2000 Compliance 12

NTRODUCTION

Introduction 13

56K Access 13

Applications 13

Local Networking with Access to the Internet 14

Local Networking with Access to a Remote Ofﬁce 14

Features 15

Ease of Installation and Use 15

High Performance 15

Connectivity 15

Routing 15

Bandwidth Management 15

Remote Management 15

Protocols 16

Error Control and Data Compression 16

Modulation Schemes 16

Security 16

Upgradability 16

Diagnostics 16

Warranty 17

Support for Internet Applications 17

56K LAN M

ODEM

UNCTIONALITY

ESCRIPTION

Connection Types 19

56K Technology 19

LAN Side Connection 19

Application Sharing over the LAN 20

WAN Connection 21

One High Speed Connection 21

Sharing the Connection 21

Call Routing Protocol and IP Address Translation 22

Placing a Call to a Previously Deﬁned Destination 22

Call Routing While No Other Calls are Connected 22

Understanding VPNs and PPTP 23

Setting Up the Server Side of the Tunnel 24

Setting Up the Client Side of the Tunnel 24

For Windows Dial-Up Networking Users 24

Establishing a Tunnel via the LAN Modem 24

ARDWARE

ESCRIPTION

AND

NSTALLATION

Package Contents 27

Before You Install the 56K LAN Modem 27

Front Panel LED Description 28

Back Panel Connector Description 29

Installing the 56K LAN Modem 29

Before You Begin 29

Installing the Analog Cable 30

Connecting to a 10BASE-T Ethernet Port 30

Connecting to Another Ethernet Hub 31

Before You Begin 31

Installing Analog Equipment 32

Installing the Power Cable 32

ETTING

TCP/IP

FOR

INDOWS

AND

ACINTOSH

TCP/IP Setup Using Windows 95 and 98 35

TCP/IP Setup Using Windows NT 4.0 38

TCP/IP Setup Using Mac OS 7.6 or later 41

TCP/IP Setup Using Windows 3.11 42

Setting up TCP/IP using MS_TCP 42

ONFIGURING

THE

56K LAN M

ODEM

Typical Conﬁguration 45

Before You Begin 45

You Should Have This Information 46

Determine Whether You Use Dynamic or Static IP Addresses 46

Setting Up Your Computer If You Have a Static IP Address 47

For Windows 98 and 95 Users 47

For Windows NT 4.0 Users 47

For Macintosh Users 48

For Windows 3.11 Users 48

Conﬁguring the 56K LAN Modem for the Typical Conﬁguration 49

Conﬁguring a Static IP Address on the 56K LAN Modem 52

Conﬁgure Additional Parameters 53

56K LAN Modem Main Page 54

Links From the Illustration 54

Links from the Buttons 55

DVANCED

ONFIGURATION

Advanced Conﬁguration 57

Setting Up Additional Service Providers 57

ISP Versus Private Network 58

When to Select ISP 58

When to Select Private Network 58

Setting Up a Connection to an ISP 58

Before You Begin 58

Setting Up a Connection to the Internet 59

Setting Up a Connection to a Private Network 62

Before You Begin 62

Setting Up a Connection to a Remote LAN 62

Associating Service Providers with Computers on the LAN 65

Editing Service Provider Proﬁles 66

Restricting Access to Service Providers 66

Conﬁguring LAN Parameters 67

Understanding LAN Parameters 67

Name 67

IP Address and Subnet Mask 67

Local Domain Name 68

Enable DHCP Server 68

Enable NetBIOS Filtering 68

Conﬁguring the LAN Parameters 68

Conﬁguring Modem Control Parameters 69

Understanding Modem Controls 69

Connection Controls 69

Mode Controls 69

Protocol Controls 69

Changing Modem Controls 70

Changing Data Call Parameters 71

Understanding Data Call Parameters 71

Minimum Call Duration 71

Disconnecting an Automatic Data Call 71

Disconnecting a Manual Data Call 72

Number of Times to Redial for a Manual Call 72

Delay Between Redial Attempts When Placing a Manual Call 72

Conﬁguring the Data Call Parameters 72

Selective Password Protection 72

Changing Your Password 73

What If I Forget My Password? 73

Locking and Unlocking the Conﬁguration 73

Conﬁguring the LAN Modem from a Remote Location 74

Conﬁguring the LAN Modem Remotely via Another LAN Modem 74

Conﬁguring the LAN Modem Remotely via an Analog Modem 74

LACING

, R

ECEIVING

AND

ISCONNECTING

ALLS

Placing Calls 77

Placing a Call Automatically 77

Call Routing Among Service Providers 77

Placing a Call Manually 78

Placing a Call Manually to a Temporary Service Provider 78

Receiving Calls 79

Receiving Voice Calls 79

Receiving Data Calls 79

Auto Answer 79

Disconnecting Calls 80

Disconnecting Calls Manually 80

Disconnecting Calls Automatically Using Timers 80

Minimum Call Duration 80

Idle Timeout 80

Using a Connection Script 80

Before You Begin 80

Accessing the Script Conﬁguration Page 81

Creating a Connection Script 82

Connection Script Command Syntax 82

Using the Conﬁguration Buttons 82

Additional Conﬁguration Buttons 84

ROUBLESHOOTING

AND

AINTENANCE

Checking the Basics 85

Monitoring LEDs 85

Monitoring the ALERT LED 85

Monitoring the LAN Port Status LEDs 86

Evaluating Symptoms and Solutions 86

Finding More Information 90

Contacting Technical Support 90

Downloading Firmware to Your 56K LAN Modem 90

Resetting the 56K LAN Modem to a Factory Default Setting 90

Resetting the 56K LAN Modem to the Factory Defaults 90

Reviewing Statistics 91

Understanding System Statistics 91

Understanding Current Call Information 91

Understanding Last Call Information 92

Understanding Service Provider Information 93

ETWORKING

RIMER

SING

THE

USTOM

ROWSER

ACTORY

EFAULTS

PECIFICATIONS

General Speciﬁcations 105

Year 2000 Compliance 105

LOSSARY

3COM CORPORATION LIMITED WARRANTY

FCC CLASS B STATEMENT

FCC DECLARATION OF CONFORMITY

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