Page 11 - Introduction; Triple Modem Module; How to Use This Guide; This table shows where to find specific information:; If you are looking for information on:
A B O U T T H I S G U I D E 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 ...
Page 12 - Conventions; The icon conventions that are used throughout this guide are:; Icon; commands
2 A B O U T T H I S G U I D E Conventions The icon conventions that are used throughout this guide are: The text conventions used in this guide are: Icon Type Description Information Note Information notes call attention to important features or instructions. Caution Cautions alert you to personal s...
Page 13 - Additional Safety Information
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. ...
Page 16 - Principal Features
1 - 2 C H A P T E R 1: T R I P L E M O D E M M O D U L E 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. ■ No...
Page 17 - Implementation of
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....
Page 19 - Typical Applications; a large number of remote users connect to the central site’s
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 ...
Page 20 - Pack Contents Checklist; AccessBuilder 7000 Triple Modem Module User Guide; Registering Ownership of your Triple Modem Module
1 - 6 C H A P T E R 1: T R I P L E M O D E M M O D U L E 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 ...
Page 21 - Pre-installation Requirements; with its power supply module(s) and the Management Controller
Pre-installation Requirements 1 - 7 Pre-installation Requirements Before you install the Triple Modem Module into the AccessBuilder 7000 Access Concentrator chassis, check that the following requirements have been met: ■ The AccessBuilder 7000 Access Concentrator must already be fitted with its powe...
Page 23 - Overview; Chapter 1
2 I N S T A L L A T I O N A N D O P E R A T I O N Overview This chapter describes how to install the AccessBuilder 7000 Triple Modem module into the AccessBuilder 7000 Access Concentrator chassis, how to connect to your DTEs and PSTN l ines and how to read the LEDs on the module’s front panel. Ensur...
Page 24 - Installing The Module; “Connecting the
2 - 2 C H A P T E R 2: I N S T A L L A T I O N A N D O P E R A T I O N Installing The Module Before installing the module, read the Safety Information at the front of this guide. An AccessBuilder 7000 module consists of two parts; a front card and a back card that both connect to the chassis’ backpl...
Page 25 - Installing the Rear Card; install the front card.
Installing The Module 2 - 3 Installing the Rear Card Figure 2-1 Installing The Rear Card 1 Locate the rear slot equivalent to the front slot into which you will install the front card. 2 Remove the metal blanking plate at the rear of the chassis and retain the screws. Retain the blanking plate. If y...
Page 26 - Installing the Front Card; rear slot in which you have already installed the rear card.
2 - 4 C H A P T E R 2: I N S T A L L A T I O N A N D O P E R A T I O N Installing the Front Card Figure 2-2 Example of Installing A Front Card 1 Locate the front slot in the AccessBuilder 7000 chassis equivalent to the rear slot in which you have already installed the rear card. 2 Insert the front c...
Page 27 - Connecting the Cables; Dial Line; Appendix A
Installing The Module 2 - 5 Connecting the Cables The ports on the rear panel are arranged in two groups. Modem Lines 1-3 Each modem port has two connections: Dial Line (1, 3 & 5) The upper RJ45 connection in each pair connects to a normal dialled service, use this port to connect your modem to ...
Page 28 - Front Panel LEDs; AccessBuilder
2 - 6 C H A P T E R 2: I N S T A L L A T I O N A N D O P E R A T I O N Front Panel LEDs This section describes the Triple Modem Module’s LEDs. Most of the LEDs can only be seen when the front door of the AccessBuilder 7000 chassis is open. When the door is closed, only the PWR, ALARM, ALERT and TEST...
Page 29 - AccessBuilder 7000 Access Concentrator User Guide
Front Panel LEDs 2 - 7 PWR (Power) When lit indicates that the module is receiving power from the chassis’ backplane and that the power circuits are functioning correctly. ALARM Lights to indicate that an event has occurred on one or more of the modems w hich has been configured to raise an alarm. S...
Page 31 - Troubleshooting Guide; AccessBuilder 7000 AT Command Reference; odem Health; POWER LED does not light
3 T R O U B L E S H O O T I N G Troubleshooting Guide In this section we discuss the basic problems that can occur when using your modem. If you are having data communication difficulties such as periodic character loss, random errors, or constant format errors: use the loopback tests described in A...
Page 32 - Modem - DTE Connection; Modem does not accept or echo back AT commands; ATE; ATQ
3 - 2 C H A P T E R 3: T R O U B L E S H O O T I N G Modem - DTE Connection Modem does not accept or echo back AT commands Check t hat the cable between the serial port of the DTE and the modem is a standard RS232 cable. If the cable is bad, replace it. (Null modem cables, also known as cross-over c...
Page 33 - Modem - Telephone Line Connection; Connection Problems in Answering a Call
Troubleshooting Guide 3 - 3 Modem - Telephone Line Connection Connection Problems in Answering a Call Modem does not receive a dial tone Attach a t elephone direct to the wall outlet to check i f a dial tone exists. Make sure the telephone line is connected to the appropriate modem’s rear panel PSTN...
Page 35 - Intermittent disconnects, high error rates, or excessive
Troubleshooting Guide 3 - 5 Intermittent disconnects, high error rates, or excessive retransmissions Perform a remote digital loop test as described in the AccessBuilder 7000 AT Command Reference . Modem establishes and disconnects a call You may have a poor telephone line connection. Disconnect and...
Page 36 - Private-line Operation; Modems do not train-up on private lines; Dial Backup Operation; Modems do not establish a PSTN link when the Private line fails
3 - 6 C H A P T E R 3: T R O U B L E S H O O T I N G On-line Operation Data is scrambled Check t hat the character format (data bits, parity, and stop bits) is set to the same value in both modems. Missing data during a transfer Check t hat you are using the same method of flow control for both the ...
Page 37 - Transmitter / Receiver Specifications; Modulation
A M O D E M S P E C I F I C A T I O N A N D I N T E R F A C E P I N A S S I G N M E N T S Transmitter / Receiver Specifications Modulation CCITT V.34 (33600, 31200, 28800, 26400, 24000, 21600, 19200, 16800, 14400, 12000, 9600, 7200, 4800, 2400 bps) Non-proprietary V.32terbo (19200, 16800, 14400, 120...
Page 38 - Autodial - Autoanswer
A - 2 A P P E N D I X A: M O D E M S P E C I F I C A T I O N A N D I N T E R F A C E P I N A S S I G N M E N T S D ata Input Serial binary. Complies with CCITT V.28. A ccepts levels ±3 volts to ±2 5 volts. (+)= space (-)= mark. Single wire ground return. 3000 to 7000 ohms load. Data Output Serial bi...
Page 39 - Physical Description
Physical Description A - 3 Protocols Extended AT command set. Non-volatile memory. 5 preset factory, 2 user defined configurations and one power-up configuration. 20 stored telephone numbers. AT or V.25bis asynchronous, bisynchronous and HDLC synchronous commands are entered via the DTE interface. A...
Page 40 - Approvals Information; CE; General Approvals Requirements
A - 4 A P P E N D I X A: M O D E M S P E C I F I C A T I O N A N D I N T E R F A C E P I N A S S I G N M E N T S Approvals Information This product complies with the electro-magnetic compatibility (EMC) requirements of EN 55022 Class A and EN 50082 (susceptibility). The product carries the CE certif...
Page 41 - Interference and Safety Requirements
Approvals Information A - 5 ■ All the other apparatus shall comprise only: ■ Apparatus approved (see note) for the purpose of connection between the apparatus and the digital circuit; and ■ Cable or wiring complying with a code of practice for the installation of apparatus covered by this standard o...
Page 42 - PBX and PABX Application
A - 6 A P P E N D I X A: M O D E M S P E C I F I C A T I O N A N D I N T E R F A C E P I N A S S I G N M E N T S CAUTION: Danger of explosion if the battery is incorrectly replaced. Replace only with the same or equivalent type of battery as specified by the manufacturer. A used battery must be disp...
Page 43 - Ringer Equivalence; REN is a guide to the maximum number of apparatus (for example,
Approvals Information A - 7 Ringer Equivalence REN is a guide to the maximum number of apparatus (for example, telephones) that can be simultaneously connected to one telephone line. The REN value of each apparatus is added together and must not exceed 4. Unless otherwise marked, a telephone can be ...
Page 44 - DTE Port Pin Assignments; Each m
A - 8 A P P E N D I X A: M O D E M S P E C I F I C A T I O N A N D I N T E R F A C E P I N A S S I G N M E N T S DTE Port Pin Assignments Each m odem is equipped with a single serial port marked DTE, which can be used to enter asynchronous AT or V.25bis commands, and pass asynchronous or synchronous...
Page 45 - The DTE port terminates with a 26-way miniature SCSI connector.
DTE Port Pin Assignments A - 9 V.24/V.28 The DTE port terminates with a 26-way miniature SCSI connector. The port can be configured to support V.24 or V.28 signalling characteristics. The DTE port connecting cable is not supplied with the module. The following signalling characteristics should be ob...
Page 47 - STN Port Cable Pin Assignments; Each modem on the communications card is equipped with a single
P STN Port Cable Pin Assignments A - 11 P STN Port Cable Pin Assignments Each modem on the communications card is equipped with a single PSTN line port, which is accessed via the appropriate DIAL LINE socket on the card’s interface module (refer to the rear panel diagram in Section 1.2 for an exact ...
Page 48 - rivate Line Port Cable Pin Assignments
A - 12 A P P E N D I X A: M O D E M S P E C I F I C A T I O N A N D I N T E R F A C E P I N A S S I G N M E N T S P rivate Line Port Cable Pin Assignments Each modem on the communications card is equipped with a single Private line port supporting either a 2- or 4-wire connection, which is accessed ...
Page 49 - the variety of services described in this appendix.; On-line Technical Services; Com offers worldwide product support seven days a week, 24 hours a; Com Bulletin Board Service; Access by Modem; To reach the service by modem, set your modem to 8 data bits, no
B T E C H N I C A L S U P P O R T 3Com provides easy access to technical support information through the variety of services described in this appendix. On-line Technical Services 3Com offers worldwide product support seven days a week, 24 hours a day, through the following on-line systems: ■ 3Com B...
Page 50 - Access by ISDN; World Wide Web Site; Country
B - 2 A P P E N D I X B: T E C H N I C A L S U P P O R T Call the telephone number nearest you: Access by ISDN ISDN users can dial-in to 3ComBBS using a digital modem for fast access up to 56 Kbps. To access 3ComBBS using ISDN, dial the following number: (1) (408) 654-2703 World Wide Web Site Access...
Page 51 - Support from Your Network Supplier
Support from Your Network Supplier B - 3 Support from Your Network Supplier If additional assistance is required, contact your network supplier. Many suppliers are authorized 3Com service partners who are qualified to provide a variety of services, including network planning, installation, hardware ...
Page 52 - Support from 3Com; If you are unable to receive support from your network supplier,
B - 4 A P P E N D I X B: T E C H N I C A L S U P P O R T Support from 3Com If you are unable to receive support from your network supplier, technical support contracts are available from 3Com. In the U.S. and Canada, call (800) 876-3266 for customer service. If you are outside the U.S. and Canada, c...
Page 53 - Returning Products for Repair; A product sent directly to 3Com for repair must first be assigned a
Returning Products for Repair B - 5 Returning Products for Repair A product sent directly to 3Com for repair must first be assigned a Return Materials Authorization (RMA) number. A product sent to 3Com without an RMA number will be returned to the sender unopened, at the sender’s expense. To obtain ...
Page 55 - Numerics
I N D E X Numerics 3Com Bulletin Board Service (3ComBBS) D-1 3Com sales offices D-4 A ALARM LED 2-7 ALERT LED 2-7 ANS LED 2-6 B bulletin board service D-1 C cable pin-outs A-8 CH 1 LED 2-7 CH 2 LED 2-7 CH 3 LED 2-7 COMP LED 2-6 CONN LED 2-6 connecting cables 2-5 CORR LED 2-6 D DTE ports 2-5 F featur...
