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ACCESSBUILDER 7000
®
TRIPLE MODEM MODULE
USER GUIDE
Part No. 980/000048/001
Published June 1996
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3Com Corporation ■ 5400 Bayfront Plaza ■ Santa Clara, California ■ 95052-8145 © 3Com Europe Ltd, 1996. All rights reserved. No part of this documentation may be 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 Europe Ltd. 3Com Europe Ltd. reserves the right to revise this documentation and to make changes in content from time to time wit
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IMPORTANT SAFETY INFORMATION WARNING: Warnings contain directions that you must follow for your personal safety. Follow all instructions carefully. Please read carefully and thoroughly the following information before installing the AccessBuilder 7000 Triple Modem Module: ■ Exceptional care must be taken during installation and removal of the module. ■ The safety status of the interconnection ports on this equipment are as follows: Ports identi
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WICHTIGE SICHERHEITSHINWEISE ACHTUNG: Die Warnungen enthalten Anweisungen, die Sie zur eigenen Sicherheit zu befolgen haben. Lesen Sie bitte die folgenden Informationen sorgfältig durch, bevor Sie den AccessBuilder 7000 Triple Modem Module einbauen: ■ Auf besondere Vorsicht muß während des Ein- und Ausbaus des Einheits geachtet werden. ■ Der Sicherheitsstandard der Anschlüsse fuer dieses Gerät sind wie folgt: Anschlüsse bezeichnet mit PSTN und L
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L’INFORMATION DE SÉCURITÉ IMPORTANTE AVERTISSEMENT: Les avertissements contiennent les instructions que vous devez suivre pour votre sécurité personnelle. Suivre toutes les instructions avec soin. Veuillez lire à fond l’information suivante avant d’installer le moyeu: ■ Le soin exceptionnel doit être pris pendant l’installation et l’enlèvement du moyeu. ■ Les normes de sécurité des ports d'interconnexion sur cet équipement sont les sui
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CONTENTS IMPORTANT SAFETY INFORMATION WICHTIGE SICHERHEITSHINWEISE L’INFORMATION DE SÉCURITÉ IMPORTANTE ABOUT THIS GUIDE Introduction 1 How to Use This Guide 1 Conventions 2 Additional Safety Information 3 T M M 1 RIPLE ODEM ODULE Introduction 1-1 Principal Features 1-2 Implementation of V.32terbo 1-3 Typical Applications 1-5
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3 TROUBLESHOOTING Troubleshooting Guide 3-1 Modem Health 3-1 Modem - DTE Connection 3-2 Modem - Telephone Line Connection 3-3 Connection Problems in Answering a Call 3-3 Connection Problems When Originating a Call 3-4 On-line Operation 3-6 Private-line Operation 3-6 Dial Backup Operation 3-6 A MODEM SPECIFICATION AND INTERFACE PIN ASSIGNMENTS Transmitter / Receiver Specifications A-1 Autodial - Autoanswer
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B TECHNICAL SUPPORT On-line Technical Services D-1 3Com Bulletin Board Service D-1 Access by Modem D-1 Access by ISDN D-2 World Wide Web Site D-2 Support from Your Network Supplier D-3 Support from 3Com D-4 Returning Products for Repair D-5 INDEX LIMITED WARRANTY FCC CLASS A VERIFICATION STATEMENT
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ABOUT THIS GUIDE Introduction This guide describes the features, installation and configuration of the AccessBuilder 7000 Triple Modem Module. This guide assumes that you have installed your AccessBuilder 7000 Access Concentrator and that the phone lines to which you want to connect the modems are installed and operational. How to Use This Guide This table shows where to find specific information: If you are looking for information on: Turn to:
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2 ABOUT THIS GUIDE Conventions The icon conventions that are used throughout this guide are: Icon Type Description Information Note Information notes call attention to important features or instructions. Caution Cautions alert you to personal safety risk, system damage, or loss of data. Warning Warnings alert you to the risk of severe personal injury. The text conventions used in this guide are: Convention Description “Enter” vs.
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Additional Safety Information 3 Additional Safety Information See also the Important Safety Information at the front of this guide. When using the unit, observe the following safety information: ■ Retain this user’s guide for later use and pass it on in the event of change of ownership of the unit. ■ Products manufactured by us are safe and without risk provided they are installed, used and maintained in good working order in accordance with our inst
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4 ABOUT THIS GUIDE
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TRIPLE MODEM MODULE 1 Introduction This chapter outlines the features and uses of the AccessBuilder 7000 Triple Modem Module when installed in the AccessBuilder 7000 Access Concentrator chassis. The Triple Modem Module houses three modems on a single device module that operate independently of each other but are identical in the features and facilities they offer. Each modem is a fully featured, high speed device which provides reliable a
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1-2 CHAPTER 1: TRIPLE MODEM MODULE Principal Features ■ Support for dial-up transmission protocols: ■ V.34 – 2-wire full duplex modems operating at data signalling rates of 33600, 31200, 28800, 26400, 24000, 21600, 19200, 16800, 14400, 12000, 9600, 7200, 4800 and 2400 bps. ■ Non-proprietary V.32 terbo – 2-wire full duplex modems operating at data signalling rates of 19200, 16800, 14400, 12000, 9600, 7200 and 4800 bps. ■ V.32bi
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Introduction 1-3 ■ Asynchronous dial DTE data rates from 300 to 115200 bps. ■ Modem configuration changes using the DTE interface or throught the Management Controller Module. ■ Compatibility with the industry standard AT command set. ■ Storage of up to 20 telephone numbers in directory locations. ■ Dialling using AT commands, CCITT V.25bis commands or by raising DTR on the Host to modem interface, or by data being sent to the DTE interface. ■ High-speed
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1-4 CHAPTER 1: TRIPLE MODEM MODULE negotiated between modems, providing a 16.7% increase in speed over that which can be negotiated using V.32bis. If the modem you are calling is unable to operate at the same high speeds as your modem, an optimum data transfer rate is negotiated between the two using the default configuration settings. When using the higher line speeds made available by V.32terbo, the throughput rate can be increased further by using t
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Introduction 1-5 Typical Applications The Triple Modem module is ideally suited for large central sites providing access for remote users to central site services. In the example shown in Figure 1-1 a large number of remote users connect to the central site’s AccessBuilder 7000 and gain access to the corporate LAN and its facilities through a terminal server (such as the 3Com CS3000/3100 series). The advantage of this method is that all devices on the corporate LAN can be a
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1-6 CHAPTER 1: TRIPLE MODEM MODULE Pack Contents Checklist Before you install your Triple Modem Module, check the contents of the box against the pack contents checklist below. If any of the items have been damaged in transit or are missing, then contact the 3Com reseller from whom the equipment was purchased. ■ 1 x Triple Modem Module front card. ■ 1 x Triple Modem Module back card. ■ 1 x AccessBuilder 7000 Triple Modem Module User Guide (
