Paradyne 3921PLUS, 3920PLUS User Manual
COMSPHERE
392x
MODELS 3920
INSTALLATION AND OPERATION
P
LUS
Document No. 3920-A2-GN31-30
MODEMS
P
LUS
3921
AND
P
LUS
MANUAL
November 1996
COMSPHERE 392xPlus Modems
COMSPHERE
392x
Plus
Modems
Models 3920
Installation and Operation Manual
3920-A2-GN31-30
4th Edition (November 1996)
Changes and enhancements to the product and to the information herein will be documented and issued as a new release or
a Firmware Update Description document to this manual.
For the Model 3920Plus standalone modems, the Universal Service Order Code (USOC) for Permissive mode is RJ11C.
The Canadian equivalent to RJ11C is CA11A. For the 3921Plus carrier-mounted modems, the USOC for Permissive mode
is RJ21X. The Canadian equivalent to RJ21X is CA21A.
For regulatory approval, refer to the product labeling or contact your local representative.
Warranty, Sales, and Service Information
Plus
and 3921
Plus
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
— International, 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
COPYRIGHT 1996 Paradyne Corporation. All rights reserved.
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 November 1996 3920-A2-GN31-30
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 adapter.
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.
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.
B3920-A2-GN31-30 November 1996
COMSPHERE 392xPlus Modems
Notices
C November 1996 3920-A2-GN31-30
Table of Contents
Preface
Objectives
How to Use This Manual
Related Documents
and Reader Assumptions
1. Introduction
Overview 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COMSPHERE 392xPlus
392xPlus
392xPlus
392xPlus Singleport Features 1-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
392xPlus Multiport Features 1-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Applications 1-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Government Requirements and Equipment Return 1-11. . . . . . . . . . . . . .
echnical Specifications
T
Operational Modes
Features
2. Modem Installation
Overview 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
392xPlus
Model 3920
Connecting Cables to the Model 3920
Removing and Replacing the Model 3920
Model 3921
Removing and Replacing the Model 3921
392xPlus Modem Power-Up 2-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting Factory Configuration Options for 392xPlus 2-11. . . . . . . . . . .
Modem Package
Plus
Plus
Models
Modem Installation
Modem Installation
Plus
Modem
Plus
Modem
Plus
Modem
vii. . . . . . . . . . . . . . . . . . . . . . . . .
vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
viii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-2. . . . . . . . . . . . . . . . . . . . . . . . . . .
1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-3. . . . . . . . . . . . . . . . . . . . . . . . .
2-3. . . . . . . . . . . . .
2-6. . . . . . . . . .
2-6. . . . . . . . . . . . . . . . . . . . . . . . .
2-11. . . . . . . . . .
3. DCP Operation
Overview 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Control Panels
Status Indicators 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Control Panel Operation 3-7. . . . . . . . . . . . . . . . . . . . . . . . .
Menu Structure 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Status Branch
Configure Branch 3-30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
i3920-A2-GN31-30 November 1996
COMSPHERE 392xPlus Modems
4. DCP Configuration
5. AT Command Set and S-Registers
Poll List Branch 3-30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control Branch 3-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
est Branch
T
Sub-Network Health and Status Branch 3-64. . . . . . . . . . . . . . . . . . . . . .
Call Setup Branch
alk/Data Branch
T
Security Branch 3-75. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Branch
Overview 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configure Branch 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuration Tables 4-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Multiport Mode l 4-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Singleport Mode A 4-31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overview 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Modes
Command Guidelines
AT Command List 5-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
S-Register List 5-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-65. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-73. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-76. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6. Dial Access Security
Overview 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Security Branch 6-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Security Configuration Options 6-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Security Password Entry Techniques 6-15. . . . . . . . . . . . . . . . . . . . . . . . .
Database T
able Examples
Appendices
A. Menu Tree A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B. Troubleshooting B-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pin Assignments
C.
D. CCITT V
E. ASCII Character Table E-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
F. Default Configuration Options F-1. . . . . . . . . . . . . . . . . . . . . . . . .
G. Sample Configurations G-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
H. Equipment List H-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.25bis Dialing Commands and Responses
Glossary
Index
6-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
D-1. . . . . . . . .
ii November 1996 3920-A2-GN31-30
Table of Contents
List of Figures
Figure Page
1-1 Model 3920Plus Standalone Singleport and Multiport Modems 1-3. . . . . . . . . . . . . . .
Model 3921
1-2
Model 3921
1-3
Model 3920
2-1
2-2 Modem’
2-3 Installing the Model 3921Plus
2-4 Circuit Pack Lock 2-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Model 3920
3-1
Optional SDCP and Model 3921
3-2
3-3 392xPlus
3-4 Local Analog Loopback 3-57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-5 Remote Digital Loopback 3-58. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-6 Local Digital Loopback 3-60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-7 Pattern Test and Local Analog Loopback Test 3-61. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-8 Pattern Test and Digital Loopback Test 3-62. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-9 End-to-End Pattern Test 3-62. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dial Backup
3-10
4-1 DCP Configuration Process 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 — Extended Point-to-Point G-4. . . . . . . . . . . . . . . . . . . . . . . . . .
G-3 Sample Configuration — Extended Multipoint G-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
G-4 Sample Configuration — Point-to-Point with Automatic Dial Backup G-8. . . . . . . . . .
G-5 Sample Configuration — Point-to-Point with Network Management G-10. . . . . . . . . . .
G-6 Sample Configuration — Carrier with Network Management G-12. . . . . . . . . . . . . . . . .
G-7 Sample Configuration — Extended Diagnostics G-14. . . . . . . . . . . . . . . . . . . . . . . . . . . .
G-8 Sample Configuration — Digital Bridge G-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
G-9 Sample Configuration — Point-to-Point MSD G-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
G-10 Sample Configuration — Multipoint MSD G-20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Plus Singleport Modem 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Plus Multiport Modem 1-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Plus Multiport Back Panel and Power Supply 2-4. . . . . . . . . . . . . . . . . . . .
s Back Connector Plates
Modems
Plus
DCP
Plus
Faceplate
LCD and Keypad
2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-68. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
iii3920-A2-GN31-30 November 1996
COMSPHERE 392xPlus Modems
Table Page
List of Tables
1-1 392xPlus
1-2 Technical Specifications for 392xPlus
3-1 392xPlus DCP LEDs 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-2 SDCP LEDs 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-3 Top-Level Menu Status 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Common Operational Messages
3-4
Dial Access Security Messages
3-5
Health and Status Messages
3-6
Backup Status Screens
3-7
3-8 Valid Ranges for VF Thresholds 3-53. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-9 Valid Dial Command Modifiers 3-72. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-1 DTE Interface Configuration Options — Multiport Mode 4-10. . . . . . . . . . . . . . . . . . . .
4-2 Line Dialer Configuration Options — Multiport Mode 4-19. . . . . . . . . . . . . . . . . . . . . .
4-3 Dial Line Configuration Options — Multiport Mode 4-22. . . . . . . . . . . . . . . . . . . . . . . .
4-4 Leased Line Configuration Options — Multiport Mode 4-24. . . . . . . . . . . . . . . . . . . . . .
4-5 Test Configuration Options — Multiport Mode 4-27. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Miscellaneous Configuration Options — Multiport Mode
4-6
4-7 DTE Interface Configuration Options — Singleport Mode 4-33. . . . . . . . . . . . . . . . . . .
4-8 DTE Dialer Configuration Options — Singleport Mode 4-41. . . . . . . . . . . . . . . . . . . . . .
4-9 Line Dialer Configuration Options — Singleport Mode 4-46. . . . . . . . . . . . . . . . . . . . . .
4-10 Dial Line Configuration Options — Singleport Mode 4-50. . . . . . . . . . . . . . . . . . . . . . .
4-11 Leased Line Configuration Options— Singleport Mode 4-53. . . . . . . . . . . . . . . . . . . . . .
4-12 V.42/MNP/Buffer Configuration Options — Singleport Mode 4-58. . . . . . . . . . . . . . . . .
4-13 Test Configuration Options — Singleport Mode 4-64. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Miscellaneous Configuration Options — Singleport Mode
4-14
Result Codes
5-1
5-2 392xPlus
5-3 392xPlus
6-1 Edit Password Table Group Options 6-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-2 Set Answer Security Group Options 6-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-3 Set Originate Security Group Options 6-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-4 Security Configuration Options 6-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-5 Security Database T
6-6 Security Database Table Using DTE-Side Passwords 6-17. . . . . . . . . . . . . . . . . . . . . . . .
6-7 Security Database Table Using Both VF-Side and DTE-Side Passwords 6-17. . . . . . . . .
Modem Health
B-1
B-2 Leased-Line Operation B-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dial Backup Operation
B-3
B-4 Modem — DTE Connection B-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Modem — VF Connection
B-5
Operational Modes
Modems
AT Commands
S-Registers
able Using VF-Side Passwords
1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-13. . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-28. . . . . . . . . . . . . . . . . . . .
4-66. . . . . . . . . . . . . . . . . . .
5-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-16. . . . . . . . . . . . . . . . . . . . . . . . .
B-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
iv November 1996 3920-A2-GN31-30
Table of Contents
Table Page
B-6 Online Operation B-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B-7 Mux Operation B-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C-1 EIA-232-D Pin Assignments C-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VF Connector Pin Assignments
C-2
D-1 V
D-2 V
.25bis Commands
.25bis Response Messages
C-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
D-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
D-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
E-1 ASCII Characters E-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
F-1 Factory Default Configuration Options F-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
v3920-A2-GN31-30 November 1996
Preface
Objectives and Reader Assumptions
This
manual describes how to install and operate the COMSPHEREr Model 3920
and Model 3921
understanding of modems and their operation.
How to Use This Manual
Plus carrier
-mounted modems. Users of this manual must have a basic
Plus
standalone
Chapter 1 provides technical specifications, information about the four 392xPlus
modem features, and the government requirements for using these modems.
Chapter 2 provides instructions for installing the 392xPlus
Chapter 3 provides the information required to operate the Model 3920Plus
control panel and the Model 3921Plus using the COMSPHERE 3000 Series Carrier’
diagnostic control panel (SDCP).
Chapter 4 provides the information required to set configuration options in the 392xPlus
using the modem’
Chapter 5 provides instructions for using A
Chapter 6 provides instructions for using the Dial Access Security feature.
Appendix A provides a menu tree for the 392xPlus
Appendix B provides instructions for performing diagnostic tests when data communication
problems occur.
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.
s diagnostic control panel.
T commands and S-Registers.
modems.
modems.
models, the
using the diagnostic
s shared
modems
Appendix G provides diagrams of sample configurations for the 392xPlus modems.
Appendix H provides an equipment list for the 392xPlus
The Glossary provides a description of terms used throughout this manual.
modems.
vii3920-A2-GN31-30 November 1996
COMSPHERE 392xPlus Modems
Related Documents
3000-A2-GA31 COMSPHERE
3610-A2-GZ45
3920-A2-GK41 COMSPHERE 392xPlus Modems, Models 3920Plus and 3921Plus,
3920-A2-GK40 COMSPHERE 3900 Series Modems, Model 3921Plus, Ferrite Choke
Call your sales representative to order additional product documentation.
3600 Hubbing Device, Featur
Instructions
Installation Instructions
Installation Instructions
3000 Series Carrier
e Number 3600-F3-300, Installation
, Installation Manual
viii November 1996 3920-A2-GN31-30
Introduction
Overview 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COMSPHERE 392xPlus Models 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Model 3920Plus Standalone Singleport Modem 1-2. . . . . . . . . . . . . . . . . . .
Model 3920Plus Standalone Multiport Modem 1-2. . . . . . . . . . . . . . . . . . . .
Model 3921Plus Carrier-Mounted Singleport Modem 1-4. . . . . . . . . . . . . .
Model 3921Plus Carrier-Mounted Multiport Modem 1-4. . . . . . . . . . . . . . .
392xPlus Operational Modes 1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
392xPlus Features 1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
392xPlus Singleport Features 1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
392xPlus Multiport Features 1-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Applications 1-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Multipoint 1-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dual-Leased Backup 1-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MSD 1-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Digital Bridge 1-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V.34 Modulation 1-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Multiport Backup 1-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Government Requirements and Equipment Return 1-11. . . . . . . . . . . . . . . . . . . .
United States 1-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Canada 1-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Specifications 1-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
Overview
The COMSPHEREr 392xPlus modems are full-feature, high-speed leased modems, providing
reliable asynchronous and synchronous operation over leased or dial lines networks with data rates
as high as 33,600 bps.
Through downloading capability, any 392xPlus modem is upgradable to the latest firmware,
requiring no new hardware investment or on-site personnel, with little or no downtime (refer to
Chapter 3,
modems support a wide range of modulation schemes and offer control using either AT commands,
the diagnostic control panel (DCP) or the optional COMSPHERE 6700 and 6800 Series Network
Management Systems (NMS). The NMS performs extensive monitoring, testing, reporting, and
restoral functions to assist in managing your network.
The 392xPlus
asynchronous A
392xPlus modem in a variety of applications and environments while also providing control over
modem configuration, dialing, and diagnostics. The 392xPlus modems come with preset factory
configurations that are the most often used modem settings.
DCP Operations,
modems are compatible with a number of dialing methods and protocols, such as
T commands, CCITT V
for more information regarding downloading options). The 392xPlus
.25bis dialing, and the DCP
. The DCP allows you to use the
1-13920-A2-GN31-30 November 1996
COMSPHERE 392xPlus Modems
COMSPHERE 392x
The COMSPHERE 392xPlus modem is available in the following four models:
Model 3920
•
Model 3920
•
Model
•
Model 3921
•
The last digit in the model number (x) varies, depending on whether the modem is equipped with
fixed Data Access Arrangement (DAA) or configurable DAA.
Model 3920
Plus
Standalone Singleport Modem
The
Model 3920
4-wire/2-wire leased-line or dial operation. This modem is controlled using either AT commands
or the 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,
Plus
Throughout this manual, reference to the 392x
represents all four models.
Models
Plus standalone singleport modem (model no. 3920-A1-41x).
Plus standalone multiport modem (model no. 3920-A1-40x).
3921Plus carrier-mounted singleport modem (model no. 3921-B1-01x).
Plus carrier-mounted multiport modem (model no. 3921-B1-00x).
NOTE
Plus
modem
Plus singleport is a standalone modem (Figure 1-1) capable of either
DCP Operation
.
Model 3920
Plus
Standalone Multiport Modem
The
Model 3920
multiplexer (TDM) and a modem sharing device (MSD) as standard equipment. The TDM
provides time division multiplexing of up to four independent ports over point-to-point lines using
the V
.34 family or V.32 family modulation. The MSD allows multiple physical ports on a tributary
modem to share a single communication channel using the V
modulation. The TDM/MSD multiplexer (commonly referred to as “mux” can be enabled or
disabled to allow a greater degree of application flexibility.
The 3920Plus multiport modem also operates over a 4-wire/2-wire leased or dial network and is
controlled using the same DCP employed on the Model 3920
Plus multiport is a standalone modem (Figure 1-1), with an integral time division
.34 family
Plus
, V
.32 family, or TMp
singleport standalone modem.
1-2 November 1996 3920-A2-GN31-30
Introduction
Model 3920
Plus
Singleport and
Multiport Housing
DIAGNOSTIC
CONTROL
PANEL
SPEAKER
Singleport Modem
Back Panel
DIAL
LEASED
STATUS
INDICAT ORS
NMS
DTE 1
POWER
ON/OFF
POWER IN
LCD AND
KEYPAD
POWER
CORD
Multiport Modem
Back Panel
DTE 3
DTE 2
DIAL
LEASED
POWER
SUPPLY
DTE 4
POWER
ON/OFF
POWER IN
NMS
DTE 1
496-14684-01
Figure 1-1. Model 3920
Plus
Standalone Singleport and Multiport Modem
s
1-33920-A2-GN31-30 November 1996
COMSPHERE 392xPlus Modems
Model 3921
Model 3921
Plus
Carrier-Mounted Singleport Modem
The
Model 3921
4-wire/2-wire leased-line or dial operation. The modem installs into a COMSPHERE 3000 Series
Carrier, occupying a single slot. The modem’s faceplate has sixteen (16) LED status indicators for
displaying modem activity and an audio speaker jack for the carrier’
The modem’
connector plate has two DB-25-S connectors, one providing an EIA-232-D DTE interface and one
for future functionality.
Plus
Carrier-Mounted Multiport Modem
The
Model 3921
time division multiplexer (TDM) with a modem sharing device (MSD). The modem installs into
the COMSPHERE 3000 Series Carrier, occupying two slots. The modem’
slots in the carrier. It has twenty (20) LED status indicators for displaying modem activity and an
audio speaker jack for the carrier’
The modem’s back panel has four edge card connectors that mount into two connector plates. Each
connector plate has two DB-25-S connectors providing four EIA-232-DTE interfaces.
Both the singleport and multiport Model 3921Plus modems derive ac power from the
COMSPHERE 3000 Series Carrier’
the carrier. The user interface to any Model 3921Plus
control panel (SDCP), an optional feature which operates in a manner similar to the DCP on the
Model 3920
Operation.
Plus
is a
carrier-mounted singleport modem (Figure 1-2) capable of either
s back panel has two edge card connectors that mount into a connector plate. This
Plus is a carrier-mounted multiport modem (Figure 1-3) equipped with an integral
Plus
modems
. For a better understanding of DCP operation, refer to Chapter 3, DCP
s optional speaker
s faceplate covers two
s optional speaker
s backplane, which is a common bus to all devices installed in
.
modem is through the shared diagnostic
.
1-4 November 1996 3920-A2-GN31-30
Status
142
125
103
104
105
106
107
108
109
FACEPLATE
Pwr
Alrm
Test
Dial
RI
Busy
Serv
SQ
TXD
RXD
RTS
CTS
DSR
DTR
LSD
EIA232/V.24
EDGE CARD
CONNECTOR
FUTURE
USE
BACK
CONNECTOR
PLATE
EIA232/V.24
EIA232/V.24
CONNECTOR
GROUNDING
TAB
Introduction
Front Panel
Spkr
3921
Plus
Figure 1-2. Model 3921
Plus
Singleport Modem
(3800)
RS366A/V.25
496-14178a-04
(3600/3500)
V.35
FUTURE
USE
1-53920-A2-GN31-30 November 1996
COMSPHERE 392xPlus Modems
3
Status
Pwr
Alrm
142
Test
Dial
125
RI
Busy
Serv
SQ
13
Port
24
103
TXD
104
RXD
105
RTS
106
CTS
107
DSR
108
DTR
109
LSD
Front Panel
Spkr
FACEPLATE
EDGE CARD
CONNECTORS
PORT
PORT
3
PORT
4
1
PORT
2
BACK
CONNECTOR
PLATES
3921
Plus
Figure 1-3. Model 3921
Plus
Multiport Modem
DTE B DTE A
DTE B DTE A
49614423a-0
1-6 November 1996 3920-A2-GN31-30
Introduction
392x
Plus
Operational Modes
The 392xPlus operational modes determine how your modem performs in various applications.
These operational modes are determined by your modem model and the selected configuration
options.
There are two operational modes:
• Singleport mode. Operates on both the singleport and multiport modems. Singleport mode is
the only operational mode for the singleport modem. For the multiport modem, it is in effect
when the MUX mode configuration option is set to Disable. The Singleport mode only
supports one port (DTE 1).
• Multiport operational mode. Operates only on the multiport
effect when the MUX mode configuration option is set to TDM/MSD or DTE_Bridge. It
supports from one to four ports (DTE 1–4), depending on how the modem is further
configured.
Using Table 1-1, identify your modem’
and its selected MUX mode configuration option.
392x
Plus
Operational Modes
392x
Plus
Modem
MUX Mode
Configuration Option
s operational mode based on the 392x
Table 1-1
Operational Mode
modems. Multiport mode is in
Plus modem model
392x
Plus
Singleport n/a Singleport
Multiport MUX Mode: Disabled
MUX Mode set to:
TDM/MSD
DTE_Bridge
Use the identified operational mode (Singleport or Multiport) to choose the configuration options
that are appropriate for your application. Refer to Chapter 4,
information on configuration options.
Singleport
Multiport
Multiport
DCP Configura
tion for more
Features
The 392xPlus modems share a wide variety of features.
• Additional VF parameters under the V.32 family modulations in 4-wire mode.
• International Support to correctly detect the call progress signals (dial tone, busy
ringback) for a variety of countries.
Channel adaptive Trellis-Coded Modulation
•
transparent forward error correction for Trellis multipoint and high-speed point-to-point
applications.
– Paradyne’
s advanced T
rellis-Coded
, fast busy
,
• Convenient migration to new or optional features through software downloading.
Extended data circuits with diagnostic capabilities.
•
1-73920-A2-GN31-30 November 1996
COMSPHERE 392xPlus Modems
• Network management system (NMS) support through the COMSPHERE 6800 or
6700 Series NMS using Advanced Diagnostic protocol (ADp).
• 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.)
392x
392x
Plus
Plus
Singleport Features
Features specific to 392xPlus singleport modems are:
• Four-wire/two-wire leased-line modulations.
• Dial-line modulations.
Refer to Table 1-2 in the T
modulations information.
echnical Specifications
Multiport Features
Features specific to 392xPlus multiport modems are:
• Four-port time division multiplexer (TDM) operation.
• Modem Sharing Device (MSD).
• Digital Bridging.
• Mux enabled, four-wire/two-wire leased-line modulations: V.34 family (33,600, 28,800,
24,000, 19,200, 16,800, 14,400, 12,000, 9600, 7200, 4800, and 2400 bps), V.32 terbo
(19,200 and 16,800 bps), V.32bis (14,400, 12,000, 9600, 7200, and 4800 bps), V.32 (9600
and 4800 bps), and Trellis Multipoint (TMp) (19,200, 14,400, 9600, 7200, 4800, and
2400 bps).
section of this chapter for leased- and dial-line
Applications
Multipoint
• Mux enabled, dial-line modulations: V.34 family (33,600, 28,800, 24,000, 19,200, 16,800,
14,400, 12,000, 9600, 7200, 4800, and 2400 bps), V.32 terbo (19,200 and 16,800 bps),
V.32bis (14,400, 12,000, 9600, 7200, and 4800 bps), V.32 (9600 and 4800 bps).
Multipoint
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 the Multiport Mode —
section in Chapter 4 for configuration options.)
is available in all 392x
Plus modems. It utilizes leased-line circuits for time sharing the
Leased Line
or the
Singleport Mode — Leased Line
1-8 November 1996 3920-A2-GN31-30
Dual-Leased Backup
Introduction
MSD
Digital Bridge
Dual-Leased
used as the backup facility instead of the normal 2-wire dial line. Plug the leased line into the jack
labeled DIAL on the back panel of the modem (see Figure 2-1 in Chapter 2), and enable the
Dual_Leased_Ln configuration option. (Refer to the Multiport Mode —
Singleport Mode — Leased Line
dialing, ring indication, and call progression functions, you control the backup function as if it
were a normal dial backup.
The Modem Sharing Device (MSD) is only available in 392xPlus multiport modems. It allows
from 2 to 4 physical ports to share a communication channel. When the MUX mode option is set to
TDM/MSD on a tributary
enabled. For more information, refer to the Multiport Mode section of Chapter 4 for configuration
options or the Point-to-Point MSD
When MSD mode is enabled:
• The MSD Control configuration option is added at the end of the Mux Sub-Group.
• The EIA Port Sub-group includes the RTS Antistream configuration option.
The Digital (DTE) Bridge application is only available in 392xPlus multiport modems. It provides
the ability for dial backup of a multipoint configuration by bridging the signal on the digital side of
the FEP-end modems. In this configuration, only two ports (both on the FEP side) are used on the
control and backup modems. Data received on Port 1 is transmitted across the communication link,
as well as looped back out of Port 2. Data received across the communication link and on Port 2 is
sent out of Port 1. For more information, refer to the Multiport Mode section of Chapter 4 or the
Digital Bridging sample configuration in Appendix G for sample configurations.
Backup is available in all 392x
section in Chapter 4 for configuration options.) Except for
, and at least one port has the MSD mode setting enabled, then MSD is
and
Multipoint MSD sample configurations in Appendix G.
Plus
modems. It enables a 2-wire leased line to be
Leased Line
or the
V.34 Modulation
When the Digital Bridge is enabled, a new menu is present with the following conditions:
• TDM capability is disabled when DTE Bridge mode is enabled, therefore the rate of Port 1
is forced to run at the line rate.
• Configuration options are provided for Port 1 only; Port 2 cannot be configured.
• Ports 3 and 4 are not available.
• Port-related tests, such as digital loopbacks and Pattern tests, are available for Port 1.
• DTE Status, Health and Status, and LED control are available for both Ports 1 and 2.
The V.34 modulation capability is available in all 392xPlus modems. In Singleport mode the V.34
modulation is compatible with other vendors’ modems that support the CCITT V.34 modulation.
The two top rates of 31,200 and 33,600 bps (Paradyne), however, only function with other
392xPlus modems. In Multiport mode, the V.34 modulation will not operate at line rates of 31,200,
26,400, and 21,600 bps, and is only compatible with other 392xPlus
modems.
1-93920-A2-GN31-30 November 1996
COMSPHERE 392xPlus Modems
The CCITT standard for V.34 modulation includes dial- or leased-line operation. For proper
leased-line operation, one modem must be designated as the answer modem while the other
modem must be designated as the originate modem.
The V
level, and automatic adjustment of the symbol (baud) rate for optimal data throughput. These
automatic adjustments are made during the training, or modem synchronization, phase via special
line-probing techniques that establish the top-most viable rate of operation. Due to these
techniques, true fixed-rate operation of the modems using V
the line condition may not be capable of supporting the selected rate. Thus, using CT11
CT112 for rate control of extended data circuits cannot be used.
When operating in V.34 modulation, you can use the top line of the Quick Configuration screen to
view the current modem transmit rate, the symbol or baud rate, and the transmit level. The
392xPlus modems offer separate options for leased and dial lines to override the asymmetric rate
function, since this can cause problems for certain DTE equipment, Also, each symbol rate
supports a subset of data rates, which make up the whole of the V
.34 standard also includes asymmetric rates, automatic adjustment of the transmit power
.34 modulation is not possible, since
1 and
.34 standard.
Symbol Rate Supported Data Rates
3429 4800 – 33.6K
3200
3000
2800
2743
2400
4800 – 31.2K
4800 – 28.8K
4800 – 31.2K
4800 – 31.2K
2400 – 24.0K
Multiport Backup
When using the V
line check feature, which tests the backup leased lines for connectivity
.34 modulation on leased lines with a 2-wire leased backup facility
, cannot be used.
, the backup
NOTE
When a 2400 V.34 modulation connection occurs on one end of a
modem pair with configuration options set for Asymmetric rates, the
other modem is 24K due to the 2400 symbol rate it uses.
When the 392xPlus multiport modem has the MUX mode configuration option set to either
TDM/MSD or Digital Bridge, it is in Multiport mode, and either dial lines or a 2-wire leased line
can be used to back up the primary 4-wire leased line. Backup can be performed automatically
upon loss of the primary leased line, and automatic dial standby also can be used to automatically
return the modems to the primary leased line when restored.
When you use backup functions while in Multiport mode, the modem’s automode feature is forced
to Disable. This ensures that the mux is not accidentally disabled by answering a call, which is
using modulation where Multiport mode is not supported. It is important that both modems
participating in the backup are in Multiport mode with the same dial-line modulation.
1-10 November 1996 3920-A2-GN31-30
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.
United States
Introduction
NOTICE T
O 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 3920
Model 3921
company.
Page A of this manual contains the Universal Service Order Codes (USOC) associated with
2.
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). To 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 392xPlus modem cause 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
Plus modem and on the modem’
Plus. If requested, this information must be provided to the telephone
.
s circuit card assembly on the
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.
7. The user is not authorized to repair or modify the equipment.
8. This equipment cannot be used on public coin service provided by the telephone company.
Connection to Party Line Service is subject to state tariffs. (Contact the state public utility
commission, public service commission or corporation commission for information.)
1-113920-A2-GN31-30 November 1996
COMSPHERE 392xPlus Modems
9. If you experience trouble with this equipment, please contact your sales or service
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: V isit 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
— International, 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.
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.
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.
1-12 November 1996 3920-A2-GN31-30
Technical Specifications
Introduction
Table 1-2
shows the technical specifications for the 392x
Table 1-2
(1 of 2)
Technical Specifications for 392x
Plus
Specifications
APPROVALS
Model 3920
COMSPHERE 3000 Series Carrier
COMPATIBILITY Leased-Line Modulations:
ENVIRONMENT
Operating Temperature
Relative Humidity 5% to 90% (noncondensing)
Shock and Vibration Withstands normal shipping
Storage Temperature
DTE INTERFACE
25-pin D-subminiature connector EIA-232-D/CCITT V.24
MODEL 3920
AC POWER REQUIREMENTS
Plus,
3921
Plus,
Plus
POWER SUPPLY
and
Refer to the product labeling or contact your service representative.
Paradyne V.34 (33,600, 31,200 bps)
CCITT V
Paradyne V.32 terbo (19,200, 16,800 bps)
CCITT V.32bis (14,400, 12,000, 9600, 7200, 4800 bps)
CCITT V.32 (9600, 4800 bps)
Paradyne T
CCITT V.22bis (2400 bps)
CCITT V.27bis (4800, 2400 bps)
CCITT V.33 (14,400, 12,000 bps)
CCITT V.29 (9600, 7200, 4800 bps)
Paradyne Point-to-Point Diagnostic (2400 bps)
Dial-Line Modulations:
Paradyne V.34 (33,600, 31,200 bps)
CCITT V
Paradyne V.32 terbo (19,200, 16,800 bps)
CCITT V.32bis (14,400, 12,000, 9600, 7200, 4800 bps)
CCITT V.32 (9600, 4800 bps)
CCITT V.22bis (2400 bps)
CCITT V.22 (1200 bps)
CCITT V.23 (1200, 600 bps)
CCITT V.21 (300 bps)
Bell 212A (1200 bps)
Bell 103J (300 bps)
Paradyne Point-to-Point Diagnostic (2400 bps)
32°F (0°C) to 122°F (50°C)
–4°F (–20°C) to 158°F (70°C)
100 to 250 V
.34 (28,800, 26,400, 24,000, 21,600, 19,200, 16,800, 14,400,
12,000, 9600, 7200, 4800, 2400 bps)
rellis Multipoint (19,200, 14,400, 9600, 7200, 4800,
2400 bps)
.34 (28,800, 26,400, 24,000, 21,600, 19,200, 16,800, 14,400,
12,000, 9600, 7200, 4800, 2400 bps)
ac, 50 to 60 Hz
Plus
modems.
Modems
Description
1-133920-A2-GN31-30 November 1996
COMSPHERE 392xPlus Modems
Table 1-2
(2 of 2)
Technical Specifications for 392x
Plus
Modems
Specifications Description
POWER CONSUMPTION
Model 3920
Model 3921
Model 3920
Model 3921
DIMENSIONS
Weight 2.5 pounds (1.14 kg) Model 3920
Height 2.1 inches (5.4 cm) Model 3920
Width Singleport
Depth 12.1 inches (30.8 cm) Model 3920
TRANSMIT LEVEL
Leased Line (North America) 0 through –15 dBm (in 1 dBm decrements)
Leased Line (All Other Countries) –1 through –15 dBm (in 1 dBm decrements)
Dial Line (North America) –10 through –32 dBm (in 1 dBm decrements)
Dial Line (All Other Countries) Level setting is not accessible to the user
TELEPHONE INTERFACE
Leased-Line Connectivity JM8 (Model 3920
Dial-Line Connectivity RJ11C Permissive
DATA RATES
Leased Line
Dial Line
ERROR CONTROL CCITT V.42
DATA COMPRESSION CCITT V.42bis
Plus
Singleport 6 watts (typical, including power supply, speaker off)
Plus
Singleport 4 watts (typical, each card) (Speaker consumption is approximately
1 watt at high volume.)
Plus
Plus
Multiport
Multiport
8 watts (typical, including power supply, speaker off)
6 watts (typical, each card) (Speaker consumption is approximately
1 watt at high volume.)
Plus
(without power supply)
1.0 pounds (0.45 kg) Model 3921
Plus
Plus
7.1 inches (18.1 cm) Model 3921
7.6 inches (19.4 cm) Model 3920
0.9 inches (2.3 cm) Model 3921
Multiport
7.6 inches (19.4 cm) Model 3920
1.8 inches (4.6 cm) Model 3921
Plus
Plus
Plus
Plus
Plus
Plus
13.4 inches (34.0 cm) Model 3921
Factory default is 0 dBm
Factory default is country dependent
Factory default is Permissive (–9 dBm)
Factory default is country dependent
Plus
)
50-pin mass termination (Model 3921
RJ21X Permissive 50-pin connector (Model 3921
33,600, 31,200, 28,800, 26,400, 24,000, 21,600, 19,200, 16,800,
14,400, 12,000, 9600, 7200, 4800, 2400 bps
33,600, 31,200, 28,800, 26,400, 24,000, 21,600, 19,200, 16,800,
14,400, 12,000, 9600, 7200, 4800, 2400, 1200, 600, 300 bps
MNP 4–2
MNP Class 5
Plus
Plus
)
Plus
)
1-14 November 1996 3920-A2-GN31-30
Overview
Modem Installation
Overview 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
392xPlus Modem Package 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Customer-Supplied Equipment 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Model 3920Plus Modem Installation 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting Cables to the Model 3920 Modem 2-3. . . . . . . . . . . . . . . . . . . . . . .
DTE Connection 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supply Connection 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Leased-Line Connection 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dial Connection 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Leased Backup Connection 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dial Backup Connection 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Network Management System Connection 2-6. . . . . . . . . . . . . . . . . . . . . . . .
Removing and Replacing the Model 3920Plus Modem 2-6. . . . . . . . . . . . . . . . .
Model 3921Plus Modem Installation 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing and Replacing the Model 3921Plus Modem 2-11. . . . . . . . . . . . . . . . .
392xPlus Modem Power-Up 2-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting Factory Configuration Options for 392xPlus 2-11. . . . . . . . . . . . . . . . .
Using the Diagnostic Control Panel (DCP) 2-12. . . . . . . . . . . . . . . . . . . . . . . .
2
392x
Plus
This chapter provides a list of equipment supplied with 392xPlus
customer supplied equipment. In addition, it describes how to install and remove the 392xPlus
modems, and how to select a factory preset configuration using the DCP.
modems, as well as a list of
Modem Package
After opening the modem’s package, check for damage and verify that the following items are
present:
For the standalone models
• Installation instructions
Model 3920
•
• Power supply with power cord
• One 6-position, 4-wire modular cord
• One 8-position, 8-wire modular cord
Plus modem
2-13920-A2-GN31-30 November 1996
COMSPHERE 392xPlus Modems
For
the carrier-mounted models
• Installation instructions
Model 3921
•
• One (singleport) or two (multiport) connector plates with two DB-25-S edge card connectors
on each plate
If any hardware components are damaged, notify your service representative. Return equipment
using the procedures described in the
Chapter 1.
Customer-Supplied Equipment
The following customer
using the Model 3920
• One (singleport) or four (multiport) DTEs with available EIA-232-D serial port(s).
• Standard EIA-232-D cables with one (singleport) or four (multiport) DB-25-P connectors at
one end to attach to the modem.
• One or more of the following modular leased or dial network interfaces:
— JM8 for leased-line configurations.
— RJ11C for dial permissive configurations.
— One 8-position, 8-wire modular cord (for leased backup purposes).
The following customer-supplied equipment is required for the installation of a Model 3921Plus
modem:
Plus modem
Government Requir
ements and Equipment Return section of
-supplied equipment is required to complete a data communications system
Plus modem:
• A COMSPHERE 3000 Series Carrier.
• A 50-pin mass termination cable.
• One or more of the following modular or 50-pin leased or dial network interfaces:
— RJ11C for single-line dial permissive configurations.
— RJ21X for multiple-line dial permissive configurations.
— 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 configurations).
For installation of the COMSPHERE 3000 Series Carrier into a cabinet, refer to the COMSPHERE
3000 Series Carrier
, Installation Manual.
2-2 November 1996 3920-A2-GN31-30
Modem Installation
Model 3920
Plus
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 back panel of the Model 3920Plus 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 (NMS) for the Network Management System connection.
• One (singleport) or four (multiport) 25-pin DB-25-S receptacles for the DTE interfaces.
Connecting Cables to the Model 3920
Instructions for connecting cables to the TELCO jack types using the appropriate cables apply to
both singleport and multiport Model 3920Plus modems. Figure 2-1 illustrates the Model 3920Plus
multiport modem. For pin assignments, refer to Appendix C.
Plus
Modem
2-33920-A2-GN31-30 November 1996
COMSPHERE 392xPlus Modems
8-POSITION,
8-CONDUCTOR
LEASED-LINE
OPERATION
PLUG FOR
NETWORK
6-POSITION,
4-CONDUCTOR
PLUG FOR
PERMISSIVE
NETWORK
OPERATION
DIAL
DB-25-S CONNECTORS
DTE
2
DB-25-P
CONNECTOR
FOR DATA
TERMINAL
EQUIPMENT
OPERATION
SUB-MINIATURE,
4-CONDUCTOR
MANAGEMENT
DTE 3 DTE 4
DTE 1LEASED DIAL NMS PWR ON OFF
4-POSITION,
PLUG FOR
NETWORK
SYSTEM
OPERATION
POWER
SUPPLY
DTE Connection
POWER
CORD
NOTE: THE DIAL JACK IS ALSO USED
FOR 2-WIRE LEASED BACKUP.
Figure 2-1. Model 3920
Plus
Multiport Back Panel and Power Supply
Use the following steps to connect an EIA-232-D cable from the modem to a DTE:
1.
Make sure the modem is powered OFF
.
2. Connect the DB-25-P (plug) connector on the cable to a DB-25-S (socket) connector
(Figure 2-1) on the modem’s back panel, labeled DTE 1—DTE 4. Use a small screwdriver
to secure the cable to the modem.
3. For each port, 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(s).
2-4 November 1996 3920-A2-GN31-30
Power Supply Connection
Use the following steps to connect the modem to an ac power outlet:
1.
Make sure the modem is powered OFF
Modem Installation
.
2. Insert the power supply’s 8-pin DIN connector into the modem’
3. Connect the power cord to the power supply.
4. Connect the power cord to a grounded ac power outlet.
Leased-Line Connection
Use the following steps to connect the leased-line network interface:
1. Insert the 8-position, 8-conductor modular plug into the jack labeled LEASED
2. Insert the other end of the modular cord into the leased-line network interface.
3. If the Model 3920Plus
Dial 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).
receptacle, labeled PWR
(Figure 2-1).
has a backup line, follow the steps listed in the
Connection
section.
s back panel dc power
(Figure 2-1).
Dial Backup
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 RJ1
Leased Backup Connection
Use the following steps 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.
Dial Backup Connection
Use the following steps to connect the modem to the dial 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.
1C jack.
2-53920-A2-GN31-30 November 1996
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