Paradyne 3911 User Manual

COMSPHERE

3900 SERIES MODEMS

MODELS 3910 AND 3911

POINT-TO-POINT/MULTIPOINT

INSTALLATION AND OPERATION MANUAL

Document No. 3910-A2-GN32-41

February 2002

COMSPHERE 3900 Series Modems

COMSPHERE 3900 Series Modems Models 3910 and 3911 Point-to-Point/Multipoint

Installation and Operation Manual 3910-A2-GN32-41

6th Edition (February 2002)

Changes and enhancements to the product and to the information herein will be documented and issued as a new release to this manual.

For the 3900 Series standalone modems, the Universal Service Order Code (USOC) for Permissive mode is RJ11C. The Canadian equivalent to RJ11C is CA11A. For 3900 Series carrier-mounted modems, the USOC for Permissive mode is RJ21X. The Canadian equivalent to RJ21X is CA21A.

FCC Registration number: See label on modem Ringer Equivalence number (REN): See label on modem

Model 3910

Canadian Certification number: See label on modem Canadian DOC Load number: See label on modem

Model 3911

Canadian Certification number: See label on modem Canadian DOC Load number: See label on modem

Warranty, Sales, and Service Information

Contact your sales or service representative directly for any help needed. For additional information concerning warranty , sales, service, repair, installation, documentation, or training, use one of the following methods:

• Via the Internet: Visit the Paradyne World Wide Web site at http://www.paradyne.com

• Via Telephone: Call our automated call system to receive current information via fax or to speak with a company

representative.

— Within the U.S.A., call 1-800-870-2221 — Outside the U.S.A., call 727-530-2340

Trademarks

All products and services mentioned herein are the trademarks, service marks, registered trademarks or registered service marks of their respective owners.

Printed on recycled paper

This publication is protected by federal copyright law. No part of this publication may be copied or distributed, transmitted, transcribed, stored in a retrieval system, or translated into any human or computer language in any form or by any means, electronic, mechanical, magnetic, manual or otherwise, or disclosed to third parties without the express written permission of Paradyne Corporation, 8545 126th Avenue North, P.O. Box 2826, Largo, Florida 33779-2826.

Paradyne Corporation makes no representation or warranties with respect to the contents hereof and specifically disclaims any implied warranties of merchantability or fitness for a particular purpose. Further, Paradyne Corporation reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of Paradyne Corporation to notify any person of such revision or changes.

A February 2002 3910-A2-GN32-41

Important Safety Instructions

1. Read and follow all warning notices and instructions marked on the product or included in the manual.

2. This product is intended to be used with a three-wire grounding type plug – a plug which has a grounding pin. This is a safety feature. Equipment grounding is vital to ensure safe operation. Do not defeat the purpose of the grounding type plug by modifying the plug or using an adaptor.

Prior to installation, use an outlet tester or a voltmeter to check the ac receptacle for the presence of earth ground. If the receptacle is not properly grounded, the installation must not continue until a qualified electrician has corrected the problem.

If a three-wire grounding type power source is not available, consult a qualified electrician to determine another method of grounding the equipment.

3. Slots and openings in the cabinet are provided for ventilation. To ensure reliable operation of the product and to protect it from overheating, these slots and openings must not be blocked or covered.

4. Do not allow anything to rest on the power cord and do not locate the product where persons will walk on the power cord.

Safety Instructions

5. Do not attempt to service this product yourself, as opening or removing covers may expose you to dangerous high voltage points or other risks. Refer all servicing to qualified service personnel.

6. General purpose cables are provided with this product. Special cables, which may be required by the regulatory inspection authority for the installation site, are the responsibility of the customer.

7. When installed in the final configuration, the product must comply with the applicable Safety Standards and regulatory requirements of the country in which it is installed. If necessary, consult with the appropriate regulatory agencies and inspection authorities to ensure compliance.

8. A rare phenomenon can create a voltage potential between the earth grounds of two or more buildings. If products installed in separate buildings are interconnected, the voltage potential may cause a hazardous condition. Consult a qualified electrical consultant to determine whether or not this phenomenon exists and, if necessary, implement corrective action prior to interconnecting the products.

9. In addition, if the equipment is to be used with telecommunications circuits, take the following precautions:

— Never install telephone wiring during a lightning storm. — Never install telephone jacks in wet locations unless the jack is specifically

designed for wet locations.

— Never touch uninsulated telephone wires or terminals unless the telephone line

has been disconnected at the network interface.

— Use caution when installing or modifying telephone lines. — Avoid using a telephone (other than a cordless type) during an electrical storm. — There may be a remote risk of electric shock from lightning. — Do not use the telephone to report a gas leak in the vicinity of the leak.

B3910-A2-GN32-40 September 1998

COMSPHERE 3900 Series Modems

Notices

WARNING

THIS EQUIPMENT HAS BEEN TESTED AND FOUND TO COMPLY WITH THE LIMITS FOR A CLASS A DIGITAL DEVICE, PURSUANT TO PART 15 OF THE FCC RULES. THESE LIMITS ARE DESIGNED TO PROVIDE REASONABLE PROTECTION AGAINST HARMFUL INTERFERENCE WHEN THE EQUIPMENT IS OPERATED IN A COMMERCIAL ENVIRONMENT. THIS EQUIPMENT GENERATES, USES, ANDCAN RADIATE RADIOFREQUENCY ENERGY AND,IF NOT INSTALLEDAND USEDIN ACCORDANCEWITH THE INSTRUCTION MANUAL, MAYCAUSE HARMFUL INTERFERENCE TO RADIO COMMUNICATIONS. OPERATION OF THIS EQUIPMENT IN A RESIDENTIAL AREA IS LIKELY TO CAUSE HARMFUL INTERFERENCE IN WHICH CASE THE USER WILL BE REQUIRED TO CORRECT THE INTERFERENCE AT HIS OWN EXPENSE.

THE AUTHORITY TO OPERATE THIS EQUIPMENT IS CONDITIONED BY THE REQUIREMENTS THAT NO MODIFICATIONSWILL BE MADE TO THE EQUIPMENT UNLESS THE CHANGES OR MODIFICATIONS ARE EXPRESSLY APPROVED BY PARADYNE.

WARNING

TO USERS OF DIGITAL APPARATUS IN CANADA: THE DIGITAL APPARATUS DOES NOT EXCEED THE CLASS A LIMITS FOR RADIO NOISE EMISSIONS FROM DIGITAL

APPARATUS SET OUT IN THE RADIO INTERFERENCE REGULATIONS OF THE CANADIAN DEPARTMENT OF COMMUNICATIONS.

LE PRESÉNT APPAREIL NUMÉRIQUE N'ÉMET PAS DE BRUITS RADIOÉLECTRIQUES DÉPASSANT LES LIMITES APPLICABLES AUX APPAREILS NUMÉRIQUES DE LA CLASSE A PRESCRITES DANS LE RÈGLEMENT SUR LE BROUILLAGE RADIOÉLECTRIQUE ÉDICTÉ PAR LE MINISTÈRE DES COMMUNICATIONS DU CANADA.

C September 1998 3910-A2-GN32-40

Preface

Objectives and Reader Assumptions ix. . . . . . . . . . . . . . . . . . . . . . . . .

How to Use this Manual ix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Related Documents x. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Ordering Information x. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1. Introduction

Overview 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Features 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Multipoint Applications 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Leased Backup Applications 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

COMSPHERE 391x Series Models 1-2. . . . . . . . . . . . . . . . . . . . . . . . . .

Government Requirements and Equipment Return 1-5. . . . . . . . . . . . . .

T echnical Specifications 1-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Modem Installation

Overview 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

391x Series Modem Package 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Model 3910 Modem Installation 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . .

DTE Connection 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Model 3910 4-Wire/2-Wire Leased-Line Connection 2-4. . . . . . . . . . . .

Dial Network Connection 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Model 3910 Dial Backup Connection 2-4. . . . . . . . . . . . . . . . . . . . . . . .

Model 3910 Leased Backup Connection 2-4. . . . . . . . . . . . . . . . . . . . . .

Network Management System Connection 2-5. . . . . . . . . . . . . . . . . . . .

Power Supply Connection 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Modem Power-Up 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Selecting Factory Configuration Options 2-6. . . . . . . . . . . . . . . . . . . . .

Removing and Replacing Model 3910 Modems 2-9. . . . . . . . . . . . . . . .

Model 3911 Modem Installation 2-9. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removing and Replacing Model 3911 Modems 2-12. . . . . . . . . . . . . . . .

i3910-A2-GN32-40 September 1998

COMSPHERE 3900 Series Modems

3. DCP Operation

4. Status Branch

5. DCP Configuration

6. Poll List Branch

Overview 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Diagnostic Control Panels 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Status Indicators 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Diagnostic Control Panel Operation 3-5. . . . . . . . . . . . . . . . . . . . . . . . .

Menu Structure 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Overview 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Overview 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Configure Branch 5-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Configuration T ables 5-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Overview 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7. Control Branch

Overview 7-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Speaker 7-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Reset 7-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Data Stream 7-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

EIA LEDs 7-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Make Busy/Remove Make Busy 7-5. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Service Line/Disconnect Service Line 7-6. . . . . . . . . . . . . . . . . . . . . . . .

Download Software 7-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

VF Thresholds Update 7-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8. Test Branch

Overview 8-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Abort 8-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Self 8-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Loc Analog Loop 8-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Rem Digital Loop 8-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Loc Digital Loop 8-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pattern 8-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9. Sub-Network Health and Status Branch

Overview 9-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ii September 1998 3910-A2-GN32-40

10. Call Setup Branch

Overview 10-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Dial 10-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Disconnect 10-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Answer 10-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Dial Standby/Return to Dial 10-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Change Directory 10-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Directory Status (Does Not Appear in North America) 10-9. . . . . . . . . . .

11. Talk/Data Branch

Overview 11-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Manual Dialing When the Remote Modem is

Configured for Auto-Answer 11-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Manual Dialing When the Remote Modem is

Configured for Manual Answer 11-3. . . . . . . . . . . . . . . . . . . . . . . . . . . .

12. Dial Access Security

Table of Contents

Overview 12-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Security Branch 12-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Security Configuration Options 12-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Security Password Entry T echniques 12-16. . . . . . . . . . . . . . . . . . . . . . . . .

Database T able Examples 12-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13. Remote Branch

Overview 13-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14. AT Command Set and S-Registers

Overview 14-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating Modes 14-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Command Guidelines 14-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

AT Command List 14-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

S-Register List 14-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

iii3910-A2-GN32-40 September 1998

COMSPHERE 3900 Series Modems

Appendices

Glossary

Index

A. Menu Tree A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

B. Troubleshooting B-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C. Pin Assignments C-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

D. CCITT V.25bis Dialing Commands and Response D-1. . . . . . . . . .

E. ASCII Character Table E-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

F. Default Configuration Options F-1. . . . . . . . . . . . . . . . . . . . . . . . .

G. Sample Configurations G-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H. Equipment List H-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

iv September 1998 3910-A2-GN32-40

Table of Contents

List of Figures

Figure Page

1-1 Model 3910 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-2 Model 3911 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-1 Model 3910 Rear Panel and Power Supply 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-2 Installing a Model 3911 Modem 2-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-3 Circuit Pack Lock 2-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-1 Model 3910 DCP 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-2 Optional SDCP, Model 3911 Faceplate, and Optional SDU 3-3. . . . . . . . . . . . . . . . . .

3-3 391x Series LCD and Keypad 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-1 DCP Configuration Process 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-2 AT Command Configuration Process 5-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-1 Local Analog Loopback 8-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-2 Remote Digital Loopback 8-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-3 Local Digital Loopback 8-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-4 Pattern T est and Local Analog Loopback Test 8-7. . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-5 Pattern T est and Digital Loopback Test 8-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-6 End-to-End Pattern Test 8-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10-1 Dial Backup 10-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C-1 VF Pin Orientation C-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C-2 Wiring Diagram — Y Cable for External Telephone C-4. . . . . . . . . . . . . . . . . . . . . . .

C-3 Wiring Diagram — 8-Position to 6-Position Crossover Cable C-5. . . . . . . . . . . . . . . .

C-4 Wiring Diagram — 25-Pin Crossover Cable C-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

G-1 Sample Configuration — Point-to-Point G-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

G-2 Sample Configuration — Multipoint G-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

G-3 Sample Configuration — Point-to-Point with Automatic Dial Backup G-4. . . . . . . . .

G-4 Sample Configuration — Point-to-Point with Network Management G-5. . . . . . . . . .

G-5 Sample Configuration — Carrier with Network Management G-6. . . . . . . . . . . . . . . .

G-6 Sample Configuration — Extended Multipoint G-7. . . . . . . . . . . . . . . . . . . . . . . . . . . .

G-7 Sample Configuration — Extended Diagnostics G-9. . . . . . . . . . . . . . . . . . . . . . . . . . .

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vi September 1998 3910-A2-GN32-40

Table of Contents

List of Tables

Table Page

1-1 Technical Specifications for 391x Series Modems 1Ć8. . . . . . . . . . . . . . . . . . . . . . . . .

3-1 Model 3910 and Model 3911 DCP LEDs 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-2 SDCP LEDs 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-3 T op-Level Menu Status 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-4 Common Operational Messages 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-5 Dial Access Security Messages 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-1 Health and Status Messages 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-2 Backup Status Screens 4-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-1 DTE Interface Configuration Options 5-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-2 DTE Dialer Configuration Options 5-20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-3 Line Dialer Configuration Options 5-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-4 Dial Line Configuration Options 5-30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-5 Leased Line Configuration Options 5-33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-6 V.42/MNP/Buffer Configuration Options 5-39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-7 T est Configuration Options 5-46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-8 Miscellaneous Configuration Options 5-48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-1 Valid Ranges for VF Thresholds 7-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10-1 Valid Dial Command Modifiers 10-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12-1 Edit Password Table Group Options 12-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12-2 Set Answer Security Group Options 12-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12-3 Set Originate Security Group Options 12-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12-4 Security Configuration Options 12-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12-5 Security Database Table Using VF-Side Passwords 12-18. . . . . . . . . . . . . . . . . . . . . . . . .

12-6 Security Database Table Using DTE-Side Passwords 12-18. . . . . . . . . . . . . . . . . . . . . . . .

12-7 Security Database Table Using Both VF-Side and DTE-Side Passwords 12-19. . . . . . . . .

14-1 Result Codes 14-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14-2 391x Series AT Commands 14-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14-3 391x Series S-Registers 14-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

B-1 Modem Health B-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

B-2 Leased-Line Operation B-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

B-3 Dial Backup Operation B-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

B-4 Modem — DTE Connection B-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

B-5 Modem — VF Connection B-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

B-6 Online Operation B-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C-1 EIA-232-D Pin Assignments C-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C-2 VF Connector Pin Assignments C-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

vii3910-A2-GN32-40 September 1998

COMSPHERE 3900 Series Modems

Table Page

D-1 V.25bis Commands D-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

D-2 V.25bis Response Messages D-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-1 ASCII Characters E-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

F-1 Factory Default Configuration Options F-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

viii September 1998 3910-A2-GN32-40

Preface

Objectives and Reader Assumptions

This manual describes how to install and operate the COMSPHEREr 391x Series standalone and carrier-mounted modems. This manual assumes that you have a basic understanding of modems and their operation.

How to Use this Manual

Chapter 1 provides technical specifications, information about the 391x Series modems’ features, and the government requirements for using these modems.

Chapter 2 provides instructions for installing the 391x Series modems. Chapter 3 provides the information required to operate the Model 3910 using the diagnostic

control panel (DCP) and the Model 3911 using the COMSPHERE 3000 Series Carrier’s shared diagnostic control panel (SDCP).

Chapter 4 shows how to use the Status branch of the front panel menu to monitor the status of the modem and view identity information.

Chapter 5 provides the information required to set configuration options in the 391x Series modems using the modem’s diagnostic control panel.

Chapter 6 describes the Poll List Branch of the DCP menu. Chapter 7 describes the Control Branch. Chapter 8 describes the T est Branch. Chapter 9 describes the Sub-Network Health and Status Branch. Chapter 10 describes the Call Setup Branch. Chapter 11 describes the Talk/Data Branch. Chapter 12 provides instructions for using the Dial Access Security feature. Chapter 13 describes how to control a remote modem using the Remote Branch. Chapter 14 provides instructions for displaying and changing AT commands and S-Registers. Appendix A provides a menu tree for the 391x Series modems. Appendix B provides instructions for performing diagnostic tests when data communication

problems occur.

ix3910-A2-GN32-40 September 1998

COMSPHERE 3900 Series Modems

Appendix C provides EIA-232-D and VF TELCO pin assignments. Appendix D provides V.25bis dialing information. Appendix E provides an ASCII translation chart. Appendix F provides a list of all default configuration options available for the factory preset

configurations. Appendix G provides diagrams of sample configurations for the 391x Series modems. Appendix H provides an equipment list for the 391x Series modems. The Glossary provides a description of terms used throughout this manual.

Overview

Features

Introduction

The COMSPHERE 391x Series modems, a new generation of full-feature, high-speed modems, offer reliable asynchronous and synchronous operation over leased-line or dial networks. The 391x Series modems’ unique software defineability allows for the addition of future enhancements, whether it is installing new features or firmware upgrades.

The modem’s compatibility with a number of dialing methods and protocols, such as asynchronous AT commands, ITU-T V.25bis dialing, and the user-friendly diagnostic control panel (DCP), permits the 391x Series modem to be used in a variety of applications and environments while also allowing control over modem configuration, dialing, and diagnostics. The 391x Series modems offer preset factory configurations containing the most often used modem settings.

The 391x Series modems have a wide variety of features.

• Four-wire/two-wire point-to-point or four-wire multipoint operation.

• Four-wire/two-wire leased-line modulations: V.32terbo (19200 and 16800 bps), V.32bis

(14400, 12000, 9600, 7200, and 4800 bps), V.32 (9600 and 4800 bps), Paradyne Point-to-Point Diagnostic (1200, 2400 bps), Trellis Multipoint (19200, 14400, 9600, 7200, 4800, and 2400 bps), V.22bis (2400 bps), V.27bis (4800 and 2400 bps), V.33 (14400 and 12000 bps), and V.29 (9600, 7200, and 4800 bps).

• Dial-line modulations: V.32terbo (19200 and 16800 bps), V.32bis (14400, 12000, 9600,

7200, and 4800 bps), V.32 (9600 and 4800 bps), Paradyne Point-to-Point Diagnostic (1200, 2400 bps), V.22bis (2400 bps), V.22 (1200 bps), V.23 (1200 and 600 bps), V.21 (300 bps), Bell 212A (1200 bps), and Bell 103J (300 bps).

• Channel adaptive Trellis-Coded Modulation, Paradyne’s advanced Trellis-Coded transparent

forward error correction for Trellis multipoint and high-speed point-to-point applications.

• Mixed inbound rates for multipoint applications.

• Convenient migration to new or optional features through software downloading.

• Extended data circuits with diagnostics.

• Network management system (NMS) support through the COMSPHERE 6800 or

6700 Series NMS using Advanced Diagnostic protocol (ADp).

• Complement of self-tests, local and remote loopbacks.

• ITU-T V.42bis and MNP Class 5 data compression.

• Virtual error free data integrity with ITU-T V.42 and MNP Level 4 error control.

• Dial access security.

• Automatic and manual backup with standby capabilities for 4-wire/2-wire leased-line

applications. (The backup facility may be either a 2-wire dial line or a 2-wire leased line.)

1-13910-A2-GN32-40 September 1998

COMSPHERE 3900 Series Modems

Multipoint Applications

In multipoint applications, leased-line circuits are used for time sharing the same front-end processor (FEP) port with multiple remote locations. The FEP (via the control modem) regulates traffic on the line by continuously polling the tributary DTE(s) in a predefined sequence. Only one tributary can communicate with the control modem at a given time. Modems configured for Trellis Multipoint (TMp) cannot be used in a point-to-point, constant carrier application. (Refer to Leased Line in Chapter 5, DCP Configuration, for configuration options.)

Leased Backup Applications

In leased backup applications, a 2-wire leased line is used as the backup facility instead of the normal 2-wire dial line. Plug the leased line into the jack labeled DIAL on the rear panel of the modem (see Figure 2-1 in Chapter 2), and enable the Dual_Leased_Ln configuration option. (Refer to Leased Line in Chapter 5, DCP Configuration, for configuration options.) Except for dialing, ring indication, and call progression functions, you control the backup function as if it were a normal dial backup.

COMSPHERE 391x Series Models

The 391x Series family is available in two models: the Model 3910, a 4-wire/2-wire standalone modem, and the Model 3911, a carrier-mounted version of the standalone unit. Both models offer a variety of modulation schemes and network enhancements while still providing reliable, high-speed data transmission using the latest in modem technology.

1-2 September 1998 3910-A2-GN32-40

Standalone Model 3910 4-Wire/2-Wire Modem

The standalone Model 3910 modem (Figure 1-1) is capable of either 4-wire/2-wire leased-line or dial operation. The modem is controlled using either AT commands or the diagnostic control panel (DCP). The DCP consists of a liquid crystal display (LCD), three function keys, four directional keys, and a row of 13 LED status indicators. For a better understanding of DCP operation, refer to Chapter 3, DCP Operation.

DIAGNOSTIC

CONTROL

PANEL

LCD AND

KEYPAD

Introduction

SPEAKER

STATUS

INDICATORS

POWER

CORD

DTE 1

DIAL

LEASED

POWER SUPPLY

POWER ON/OFF

POWER IN

NMS

496-14160-03

Figure 1-1. Model 3910

The rear of the modem contains an ON/OFF power switch, a low voltage dc power connector, an 8-pin modular connector (LEASED) for leased-line connection, an 8-pin modular connector (DIAL) for dial-line or leased-line backup, a 4-pin modular connector (NMS) for network management, and a DB-25-S DTE connector.

1-33910-A2-GN32-40 September 1998

COMSPHERE 3900 Series Modems

Carrier-Mounted Model 3911 4-Wire/2-Wire Modem

The carrier-mounted Model 3911 modem (Figure 1-2) is capable of either 4-wire/2-wire leased-line or dial operation and installs into a COMSPHERE 3000 Series Carrier. The Model 3911’s faceplate has 16 LED status indicators for displaying modem activity and an audio speaker jack for the carrier’s optional speaker .

The Model 3911 modem’s rear has two edge card connectors that mount into a connector plate located on the rear of the carrier. This connector plate has two DB-25-S connectors, one providing an EIA-232-D DTE interface and one for future functionality.

FACEPLATE

Status

Pwr Alrm

142

Test Dial

125

RI Busy

Serv

EIA232/V.24

EDGE CARD

CONNECTOR

103

TXD

104

RXD

105

RTS

106

CTS 107 108 109

DSR

DTR

LSD

FUTURE

USE

BACK

CONNECTOR

PLATE

EIA232/V.24

CONNECTOR

GROUNDING

TAB

Front Panel

(3800)

Spkr

RS366A/V.25

(3600/3500)

V.35

FUTURE

USE

3911

496-14178b

Figure 1-2. Model 3911

1-4 September 1998 3910-A2-GN32-40

The Model 3911 derives ac power from the COMSPHERE 3000 Series Carrier’s backplane, which is a common bus to all devices installed in the carrier. The user interface to any Model 3911 is through the shared diagnostic control panel (SDCP), an optional feature which operates in a manner similar to the DCP on the Model 3910. For a better understanding of DCP operation, refer to Chapter 3, DCP Operation.

The COMSPHERE 3000 Series Carrier has a total of 17 slots. The first slot, Slot 0, is reserved for the shared diagnostic unit (SDU) while the remaining 16 slots can house up to 16 Model 3911 modems, or a combination of Model 3911 modems and other units. For more details on the COMSPHERE 3000 Series Carrier, refer to the COMSPHERE 3000 Series Carrier, Installation Manual.

Government Requirements and Equipment Return

Certain governments require that instructions pertaining to modem connection to the public switched telephone network be included in the installation and operation manual. Specific instructions are listed in the following sections.

Introduction

United States

NOTICE TO USERS OF THE PUBLIC SWITCHED TELEPHONE NETWORK

1. This equipment complies with Part 68 of the FCC rules. On the equipment is a label that contains, among other information, the FCC registration number and ringer equivalence number (REN) for this equipment. The label is located on the bottom of the Model 3910 modem. This label is located on the Model 3911’s circuit card assembly. If requested, this information must be provided to the telephone company.

2. Page A of this manual contains the Universal Service Order Codes (USOC) associated with the services on which the equipment is to be connected.

3. An FCC compliant telephone cord and modular plug is provided with this equipment. This equipment is designed to be connected to the telephone network or premises wiring using a compatible modular jack which is Part 68 compliant. See Installation Instructions for details.

4. The ringer equivalence (REN) is used to determine the quantity of devices which may be connected to the telephone line. Excessive RENs on the telephone line may result in the devices not ringing in response to an incoming call. In most, but not all areas, the sum of the RENs should not exceed five (5.0). T o be certain of the number of devices that may be connected to the line, as determined by the total RENs, contact the telephone company to determine the maximum RENs for the calling area.

5. If the 391x Series modem causes harm to the telephone network, the telephone company will notify you in advance that temporary discontinuance of service may be required. But if advance notice is not practical, the telephone company will notify the customer as soon as possible. Also, you will be advised of your right to file a complaint with the FCC if you believe it is necessary.

6. The telephone company may make changes in its facilities, equipment, operations, or procedures that could affect the operation of the equipment. If this happens, the telephone company will provide advance notice in order for you to make the necessary modifications in order to maintain uninterrupted service.

1-53910-A2-GN32-40 September 1998

COMSPHERE 3900 Series Modems

7. If you experience trouble with this equipment, please contact your sales or service

8. The user is not authorized to repair or modify the equipment.

9. This equipment cannot be used on public coin service provided by the telephone company.

representative (as appropriate) for repair or warranty information. If the product needs to be returned to the company service center for repair, contact them directly for return instructions using one of the following methods:

• Via the Internet: Visit the Paradyne World Wide Web site at http://www.paradyne.com

• Via Telephone: Call our automated call system to receive current information via fax or

to speak with a company representative.

— Within the U.S.A., call 1-800-870-2221 — Outside the U.S.A., call 727-530-2340

If the trouble is causing harm to the telephone network, the telephone company may request that you remove the equipment from the network until the problem is resolved.

Connection to Party Line Service is subject to state tariffs. (Contact the state public utility commission, public service commission or corporation commission for information.)

1-6 September 1998 3910-A2-GN32-40

Canada

NOTICE TO THE USERS OF THE CANADIAN PUBLIC SWITCHED TELEPHONE NETWORK

The Canadian Department of Communications label identifies certified equipment. This certification means that the equipment meets certain telecommunications network protective, operational and safety requirements. The Department does not guarantee the equipment will operate to the user’s satisfaction.

Before installing this equipment, users should ensure that it is permissible to be connected to the facilities of the local telecommunications company. The equipment must also be installed using an acceptable method of connection. In some cases, the company’s inside wiring associated with a single line individual service may be extended by means of a certified connector assembly (telephone extension cord). The customer should be aware that compliance with the above conditions may not prevent degradation of service in some situations.

Repairs to certified equipment should be made by an authorized Canadian maintenance facility designated by the supplier. Any repairs or alterations made by the user to this equipment, or equipment malfunctions, may give the telecommunications company cause to request the user to disconnect the equipment.

Users should ensure for their own protection that the electrical ground connections of the power utility, telephone line and internal metallic water pipe system, if present, are connected together. This precaution may be particularly important in rural areas.

Introduction

CAUTION

Users should not attempt to make such connections themselves, but should contact the appropriate electric inspection authority, or electrician, as appropriate.

The Load Number is labeled on the equipment. The Load Number (LN) assigned to each terminal device denotes the percentage of the total load to be connected to a telephone loop which is used by the device to prevent overloading. The termination on a loop may consist of any combination of devices subject only to the requirement that the total of the Load Numbers of all devices does not exceed 100.

If your equipment is in need of repair, refer to the procedure in the Government Requirements and Equipment Return section on page 1-5.

1-73910-A2-GN32-40 September 1998

COMSPHERE 3900 Series Modems

Technical Specifications

T able 1-1 shows the technical specifications for the 391x Series modems.

Technical Specifications for 391x Series Modems

Table 1-1

(1 of 3)

Specifications

APPROVALS

FCC Part 15 Class A FCC Part 68 Registration Number: (See label on modem)

Model 3910 Listed to UL 1950 COMSPHERE 3000 Series Carrier Recognized to UL 1950

CSA

Model 3910 Certified to CSA C22.2 No. 950-M89 COMSPHERE 3000 Series Carrier Certified as a component to CSA C22.2 No. 950-M89

DOC

Model 3910 Certification Number: (See label on modem) Model 3911 Certification Number: (See label on modem) COMPATIBILITY Leased-Line Modulations:

Paradyne V.32terbo (19200, 16800 bps)

ITU-T V.32bis (14400, 12000, 9600, 7200, 4800 bps) ITU-T V.32 (9600, 4800 bps) Paradyne Trellis Multipoint (19200, 14400, 9600, 7200, 4800,

2400 bps) ITU-T V.22bis (2400 bps) ITU-T V.27bis (4800, 2400 bps) ITU-T V.33 (14400, 12000 bps) ITU-T V.29 (9600, 7200, 4800 bps) Paradyne Point-to-Point Diagnostic (1200, 2400 bps)

Dial-Line Modulations: Paradyne V.32terbo (19200, 16800 bps)

ITU-T V.32bis (14400, 12000, 9600, 7200, 4800 bps) ITU-T V.32 (9600, 4800 bps) ITU-T V.22bis (2400 bps) ITU-T V.22 (1200 bps) ITU-T V.23 (1200, 600 bps) ITU-T V.21 (300 bps) Bell 212A (1200 bps) Bell 103J (300 bps) Paradyne Point-to-Point Diagnostic (1200, 2400 bps)

Description

1-8 September 1998 3910-A2-GN32-40

Table 1-1

(2 of 3)

Technical Specifications for 391x Series Modems

Specifications Description

ENVIRONMENT

Operating Temperature

32°F (0°C) to 122°F (50°C) Relative Humidity 5% to 90% (noncondensing) Shock and Vibration Withstands normal shipping Storage Temperature

–4°F (–20°C) to 158°F (70°C)

DTE INTERFACE

25-pin D-subminiature connector EIA-232-D/ITU-T V.24

MODEL 3910 POWER SUPPLY

100 to 250 Vac, 50 to 60 Hz

AC POWER REQUIREMENTS POWER CONSUMPTION

Model 3910 6 watts (typical, including power supply, speaker off) Model 3911 4 watts (typical, each card) (Speaker consumption is

approximately 1 watt at high volume.)

DIMENSIONS

Weight 2.5 pounds (1.14 kg) Model 3910 (without power supply)

1.0 pounds (0.45 kg) Model 3911

Height 2.1 inches (5.4 cm) Model 3910

7.1 inches (18.1 cm) Model 3911

Width 7.6 inches (19.4 cm) Model 3910

0.9 inches (2.3 cm) Model 3911

Depth 12.1 inches (30.8 cm) Model 3910

13.4 inches (34.0 cm) Model 3911

TRANSMIT LEVEL

Leased Line (North America) 0 through –15 dBm (in 1 dBm decrements)

Factory default is 0 dBm Leased Line (All Other Countries) 0 through –15 dBm (in 1 dBm decrements)

Factory default is country dependent Dial Line (North America) –10 through –32 dBm (in 1 dBm decrements)

Factory default is Permissive (–9 dBm) Dial Line (All Other Countries) Level setting is not accessible to the user

Factory default is country dependent

TELEPHONE INTERFACE

Leased-Line Connectivity JM8 (Model 3910)

50-pin mass termination (Model 3911) Dial-Line Connectivity RJ11C Permissive

RJ21X Permissive 50-pin connector (Model 3911)

Introduction

1-93910-A2-GN32-40 September 1998

COMSPHERE 3900 Series Modems

Table 1-1

(3 of 3)

Technical Specifications for 391x Series Modems

Specifications Description

DATA RATES

Leased Line 19200, 16800, 14400, 12000, 9600, 7200, 4800, 2400 1200 bps Dial Line 19200, 16800, 14400, 12000, 9600, 7200, 4800, 2400, 1200,

600, 300 bps ERROR CONTROL ITU-T V.42

MNP 4-2 DA TA COMPRESSION ITU-T V.42bis

MNP Class 5

1-10 September 1998 3910-A2-GN32-40

Modem Installation

Overview

This chapter provides a list of equipment supplied with the modem as well as a list of customer supplied equipment. In addition, it describes how to install and remove the 391x Series modem, and how to select a factory preset configuration using either the DCP or the AT command set.

391x Series Modem Package

After opening the modem’s package, check for damage and verify that the following items are present:

For the standalone model

• Installation instructions

• Model 3910 modem

• Power supply

• One 6-position, 4-wire modular cord (in selected models)

• One 8-position, 8-wire modular cord (in selected models)

For the carrier-mounted model

• Installation instructions

• Model 3911 modem

• Rear connector plate with two DB-25-S edge card connectors

If any hardware components are damaged, notify your service representative. Return equipment using the procedures described in Government Requirements and Equipment Return in Chapter 1, Introduction.

2-13910-A2-GN32-41 February 2002

COMSPHERE 3900 Series Modems

Customer-Supplied Equipment

The following customer-supplied equipment is required to complete a data communications system using the Model 3910 modem:

• A DTE with an available EIA-232-D serial port.

• A standard EIA-232-D cable with a DB-25-P (plug) connector at one end to attach to the

modem.

• One of the following modular leased or dial network interfaces:

— JM8 for leased-line applications. — RJ11C for dial permissive applications.

The following customer-supplied equipment is required for the installation of a Model 3911 modem:

• A COMSPHERE 3000 Series Carrier.

• A 50-pin mass termination cable.

• One of the following modular or 50-pin leased or dial network interfaces:

— RJ11C for single line dial permissive applications. — RJ21X for multiple line dial permissive applications. — 66 punchdown block.

• One Network Interface Module (NIM) for modems installed in Slots 1–8 and one NIM for

modems installed in Slots 9–16 (required for dial-line applications).

For installation of the COMSPHERE 3000 Series Carrier into a cabinet, refer to the COMSPHERE

3000 Series Carrier, Installation Manual.

Model 3910 Modem Installation

Before installing your standalone modem, make sure your installation site is clean and well-ventilated. Allow space around the modem for installing cables and telephone cords, and make sure the modem is located within reach of the ac power outlet. The distance between your modem and DTE should be minimized if DTE data rates exceed 19,200 bps. Also, low capacitance cables may be necessary for speeds greater than 19,200 bps or distances greater than 50 feet.

The rear panel of the Model 3910 modem (Figure 2-1) has the following switches and connectors:

• An ON/OFF power switch.

• An 8-pin DIN type power receptacle (PWR) for the dc power supply.

• An 8-pin modular keyed jack (LEASED) for 4-wire/2-wire leased lines.

• An 8-pin modular keyed jack (DIAL) for backup lines (2-wire dial or 2-wire leased).

• A 4-pin modular jack for the (NMS) network management system connection.

• A 25-pin DB-25-S receptacle for the DTE interface.

2-2 September 1998 3910-A2-GN32-40

Connecting Cables to the Model 3910 Modems

Figure 2-1 shows how Model 3910 modems are connected to certain TELCO jack types using the appropriate cables. For pin assignments, refer to Appendix C, Pin Assignments.

DTE 2 DTE 3 DTE 4

8-POSITION,

8-CONDUCTOR

PLUG FOR

LEASED-LINE

NETWORK

OPERATION

6-POSITION,

4-CONDUCTOR

PLUG FOR

PERMISSIVE

DIAL NETWORK

OPERATION

NOTE:

THE DIAL JACK IS ALSO USED FOR 2-WIRE LEASED BACKUP.

DB-25-P

CONNECTOR

FOR DATA

TERMINAL

EQUIPMENT

OPERATION

SUB-MINIATURE,

4-CONDUCTOR

MANAGEMENT

Modem Installation

DTE 1LEASED DIAL NMS PWR ON OFF

PLUG FOR NETWORK

OPERATION

POWER SUPPLY

Figure 2-1. Model 3910 Rear Panel and Power Supply

2-33910-A2-GN32-40 September 1998

COMSPHERE 3900 Series Modems

DTE Connection

Use the following procedures to connect the EIA-232-D cable from the modem to the DTE:

1. Make sure the modem’s rear panel power switch is OFF.

2. Connect the DB-25-P (plug) connector on the cable to the DB-25-S (socket) connector labeled DTE (Figure 2-1) on the modem’s rear panel. Use a small screwdriver to secure the cable to the modem.

3. Connect the DB-25-P connector on the cable to the DB-25-S connector on the DTE. Use a small screwdriver to secure the cable to the DTE.

Model 3910 4-Wire/2-Wire Leased-Line Connection

Use the following procedures to connect a Model 3910 to the leased-line network interface:

1. Insert the 8-position, 8-conductor modular plug into the jack labeled LEASED (Figure 2-1).

2. Insert the other end of the modular cord into the leased-line network interface.

Dial Network Connection

The telephone company provides the line termination jacks for the permissive service you request. Advance coordination with the telephone company is suggested when connecting the modem to telephone dial lines (PSTN).

In the Permissive mode, the modem’s transmit output level is fixed at –9 dBm. The telephone company assumes that the line loss is 3 dB and no compensation is provided for additional losses. A Permissive mode telephone line is usually terminated with a USOC RJ11C jack.

Model 3910 Dial Backup Connection

For the Model 3910, use the following procedures to connect the modem to the dial backup network interface:

1. Insert the 6-position, 4-conductor modular plug into the jack labeled DIAL (Figure 2-1).

2. Insert the other end of the modular cord into the dial network interface.

Model 3910 Leased Backup Connection

For the Model 3910, use the following procedures to connect the modem to the 2-wire leased backup network interface:

1. Insert the 8-position, 8 conductor modular plug into the jack labeled DIAL (Figure 2-1).

2. Insert the other end of the modular cord into the leased-line network interface.

2-4 September 1998 3910-A2-GN32-40

Network Management System Connection

For the Model 3910, use the following procedures to connect the modem to the network management system interface:

1. Insert the sub-miniature, 4-conductor modular plug of the 3600 Hubbing Device into the jack labeled NMS (Figure 2-1). Refer to Document Number, 3610-A2-GZ45, 3600 Hubbing Device Feature Number 3600-F3-300, Installation Instructions, for a description of the 3600 Hubbing Device. Installation for the 3910 is the same as for the 3610 DSU.

2. Connect the 3600 Hubbing Device to the network management channel (Figure G-4 in Appendix G, Sample Configuration).

Power Supply Connection

Use the following procedures to connect the modem to an ac power outlet:

1. Make sure the modem’s power switch is in the OFF position.

Modem Installation

2. Insert the power supply’s 8-pin DIN connector into the modem’s rear panel dc power receptacle (Figure 2-1).

3. Connect the power supply to a grounded ac power outlet.

Modem Power-Up

Once your modem is properly connected to the power supply , leased and/or dial lines, and the DTE, press the modem’s rear panel power switch to the ON position. The modem begins a power-up self-test, in which all DCP LEDs light. This test takes several seconds to perform, and verifies the operation of most hardware components within the modem. If successful, the LCD displays Power on Selftst Passed and continues to the Top-Level menu screen.

If a failure occurs during the self-test, the LCD displays Power On Selftst Failed for several seconds. The LCD then displays the T op-Level menu screen with the message Power on Fail appearing on the top line of the LCD. Although a failure has occurred, the modem will attempt to operate. This allows you to activate a more thorough self-test using the T est branch. Refer to Chapter 8, Test Branch.

Power On Selftst Passed

2-53910-A2-GN32-40 September 1998

COMSPHERE 3900 Series Modems

Selecting Factory Configuration Options

After the modem passes the power-up self-test, configure it for operation using one of the six factory preset configurations.

The 391x Series modems have six factory preset templates that contain the most commonly used configuration options (straps) for Synchronous Leased (Answer or Originate), Asynchronous Leased (Answer or Originate), Trellis Multipoint (Control or T ributary), Asynchronous Dial, Synchronous Dial, and UNIX Dial hardware network configurations. Your modem ships from the factory with the Synchronous Leased (Answer) default configuration options stored in memory. If Synchronous Leased (Originate), Asynchronous Leased (Answer or Originate), Trellis Multipoint (TMp) (Control or Tributary), Async Dial, Sync Dial, or UNIX Dial is more appropriate for your configuration, then you must change the factory setting using either the modem’s DCP or the AT command set as described in the following sections.

The purpose of having preset configurations is so that you can have a “head start” in getting your modem operating and reducing the amount of time required to configure your modem. For a better understanding of DCP operation and factory preset configuration options, refer to Chapter 5, DCP Configuration.

Using the Diagnostic Control Panel (DCP)

The DCP’s liquid crystal display (LCD) consists of two 16-character lines which display modem status, control functions, and configuration options as well as indicating your location in the T op-Level menu tree (Appendix A).

T o change a factory template from the Sync Leased preset configuration using the DCP, perform the following steps:

1. Press the function key below Configure to select the Configure branch. The LCD now displays Ld EditArea frm.

2. Press the factory preset configurations.

Factory preset configurations are Sync Leased, Async Leased, TMp (Trellis Multipoint), Async Dial, Sync Dial, and UNIX Dial. If Sync Leased or Async Leased is selected, you must choose either Answer or Originate mode. If TMp is selected, you must choose either Control or Trib (Tributary) mode.

3. Press the press the corresponding function key to select your choice. (For certain factory templates you will also need to choose the appropriate mode.)

4. Choose Function appears and displays the Edit and Save functions.

5. Press the F3 key (Save) to save the new factory preset configuration to one of three configuration areas, Active (Saved), Customer 1, or Customer 2.

key until Factory comes into view, then press the F1 key to display the

key until the appropriate factory preset template appears on the LCD, and

(These three configuration areas are nonvolatile memory locations. Active (Saved) contains the most recently saved changes to any configuration options. In the event of power loss, the modem retrieves these configuration options. Customer 1 and Customer 2 are user-defined configuration areas.)

The LCD now displays Sav EditArea to.

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