Page 1
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
Page 2
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
Page 3
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
Page 4
COMSPHERE 392xPlus Modems
Notices
C November 1996 3920-A2-GN31-30
Page 5
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
Page 6
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
Page 7
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
Page 8
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
Page 9
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
Page 10
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
Page 11
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
Page 12
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
Page 13
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
Page 14
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
Page 15
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
Page 16
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
Page 17
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
Page 18
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
Page 19
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
Page 20
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
Page 21
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
Page 22
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
Page 23
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
Page 24
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
Page 25
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
Page 26
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
Page 27
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
Page 28
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
Page 29
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
Page 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
Page 31
COMSPHERE 392xPlus Modems
Network Management System Connection
Use the following steps to connect the modem to the network management system (NMS)
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, Featur
description of the 3600 Hubbing Device. Installation for the 3920Plus
3610 DSU.
2. Connect the 3600 Hubbing Device to the network management system (Figure G-4 in
Appendix G).
e Number 3600-F3-300, Installation Instructions, for a
is the same as for the
Removing and Replacing the Model 3920
To remove and replace the Model 3920Plus modem, perform the following steps:
1.
Model 3921
Make sure the modem is of
2. Disconnect the power cord from the ac power outlet.
3. Disconnect the dc power cable from the connector on the back of the modem.
4. Disconnect the leased-line and dial modular cord(s) from the modem’
5. Disconnect the DTE interface cable(s) from the modem’
If the modem is to be removed for service, return it to the company using the procedures
6.
Plus
described in
Install the replacement modem as described in the
section of this chapter
Modem Installation
Government Requir
fline. Press the modem’
ements and Equipment Return in Chapter 1.
, and configure it the same way as the modem being replaced.
Plus
Modem
s back panel power switch to OFF
s back panel.
s back panel.
Model 3920Plus Modem Installation
.
CAUTION
When removing the Model 3921
use a ground strap when handling the modem. Always store
the Model 3921
from the carrier.
The
Model 3921
which supplies both the operating power and the leased and/or dial network connections. For
additional information about the COMSPHERE 3000 Series Carrier, refer to the COMSPHERE
3000 Series Carrier
The COMSPHERE 3000 Series Carrier has 17 slots that hold up to 8 Model 3921Plus multiport
modems or 16 Model 3921
2-6 November 1996 3920-A2-GN31-30
Plus modems are designed for installation in a COMSPHERE 3000 Series Carrier,
, Installation Manual.
Plus
in an antistatic bag when it is removed
Plus singleport modems, and one shared diagnostic unit (SDU). The
Plus
from the carrier, always
Page 32
Modem Installation
SDU is required when the modems in the carrier are controlled by an NMS, or when multiple
carriers in a cabinet configuration are to be controlled by a single shared diagnostic control panel
(SDCP). The SDCP of the COMSPHERE 3000 Series Carrier is the user interface to the
Model 3921
Plus modem. A single SDCP can control up to eight carriers.
The installation of a Model 3921Plus modem varies slightly if an SDCP is installed on the front of
the carrier. T
o install a Model 3921
Plus modem into the carrier without an SDCP, perform the
following steps:
1. At the back of the carrier, install the connector plates (Figure 2-2). Make sure the plate(s)
use the same slot positions as that intended for the modem.
Loosely fasten the plate(s). This allows for slight adjustments later when installing the
modem.
2. At the front of the carrier, hold the modem vertically, with the latch on its faceplate in the
open position, and insert it into the top and bottom card guides of one of the slots
numbered 1–15 (Figure 2-3).
Slide the modem into the slot, aligning the modem with the connector plates, until the
backplane connector and DTE connector seat firmly into the back of the carrier. The
faceplate latch automatically closes as you push the modem into the carrier
modem into the carrier
, press the faceplate latch until a “click” is heard.
. To lock the
3. If the carrier is ON, the Power LED on the faceplate of the Model 3921Plus lights. After
several seconds the modem completes its power
-up self-test, in which all faceplate LEDs
light.
Return to the back of the carrier and tighten the connector plate(s).
MULTIPORT
DTE ADTE B
BACK
DTE ADTE B
CONNECTOR PLATES
SINGLEPORT
BACK
CONNECTOR PLATE
RS366A/V.25 (3800) EIA232/V.24
V.35 (3600/3500)
EIA232/V.24
CONNECTOR
FUTURE USE
Figure 2-2. Modem’s Back Connector Plates
495-14696
2-73920-A2-GN31-30 November 1996
Page 33
COMSPHERE 392xPlus Modems
3000 SERIES
CARRIER
SDU
MODEL 3921
SINGLEPORT
MODEM
SDU
Plus
LATCH
CIRCUIT CARD
GUIDES
3000 SERIES
CARRIER
MODEL 3921
MULTIPORT
MODEM
Figure 2-3. Installing the Model 3921
2-8 November 1996 3920-A2-GN31-30
Plus
LATCH
CIRCUIT CARD
GUIDES
Plus
495-14708
Modem
Page 34
If
the Model 3921
Plus
modem is to communicate with an installed SDCP
described above and perform the following steps:
1.
Press the
key on the SDCP
Select
. The Carr:Slot screen appears with the cursor on the
slot selection position (01 on the first LCD line in following screen example).
Carr:Slot: 1:01A
↑ ↓ 1:01A
Modem Installation
, install the modem as
F1
F2
F3
2. Press the F1 ( " ) or F2 ( # ) key until the slot number you want appears.
3. If you have more than one carrier
, press the
key to move the cursor to the carrier
selection position (1: on the first LCD line in the following screen example).
Carr:Slot: 1:01A
↑ ↓ 1:01A
F1
F2
F3
4. Press the F1 ( " ) or F2 ( # ) key until the carrier number you want appears.
The carrier number selection has a range of 1 to 8 since a single SDCP can control a
configuration of up to eight carriers. (This is only possible if the SDU is installed.)
Press the
5.
key to place the SDCP in direct communication with the selected
Select
modem.
The LCD displays the Top-Level menu for the selected modem. In addition, the Front
Panel LED on the modem’
s faceplate and the
OK LED on the SDCP light.
2-93920-A2-GN31-30 November 1996
Page 35
COMSPHERE 392xPlus Modems
2
6. Once you have determined that the modem is installed properly and completed its
power-up self-test, rotate the circuit pack lock until it covers the faceplate latch
(Figure 2-4) and tighten the retention screw on the circuit pack lock. This prevents the
modem from accidently being removed once it is installed in a carrier.
7. Configure the modem as described in the
earlier in this chapter.
Selecting Factory Configuration Options
CIRCUIT
PACK
LOCK
LATCH
section
CLOSED
OPEN
RELEASE TAB
Figure 2-4. Circuit Pack Lock
495-14425-0
2-10 November 1996 3920-A2-GN31-30
Page 36
Modem Installation
Removing and Replacing the Model 3921
CAUTION
392x
Plus
When removing the Model 3921
always use a ground strap when handling the modem. Always
store the Model 3921
is removed from the carrier.
It is not necessary to power down the carrier to remove and replace the Model 3921Plus modem.
Perform the following steps:
1. Rotate the circuit pack lock until the release tab is exposed (Figure 2-4).
2. Press down on the release tab and pull the modem away from the carrier’
Modem Power-Up
Once your modem is properly connected to the power supply
DTE, press the modem’
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.
s back panel power switch to the ON position. The modem begins a
Plus
Plus
modems in an antistatic bag when it
Plus
modem from the carrier,
Modem
, leased and/or dial lines, and the
s backplane.
Power On Selftst
Passed
F1
If a failure occurs during the self-test, the LCD displays Power On Selftst Failed for several
seconds. The LCD then displays the T
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 Test branch. Refer to the
est
section in Chapter 3.
T
F2
F3
op-Level menu screen with the message
Selecting Factory Configuration Options for 392x
After
the modem passes the power
factory preset configurations.
The 392xPlus
configuration options (straps) for Synchronous Leased (Answer or Originate), Asynchronous
Leased (Answer or Originate), Trellis Multipoint (Control or Tributary), 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
modems have six factory preset templates that contain the most commonly used
-up self-test, configure it for operation using one of the six
Power on Fail
Plus
2-113920-A2-GN31-30 November 1996
Page 37
COMSPHERE 392xPlus Modems
configuration, then you must change the factory setting using either the modem’
described in the following sections) or the AT command set.
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 4,
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
Top-Level menu tree (Appendix A).
To 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
2.
Press the
factory preset configurations.
Factory preset configurations are
Async Dial
must choose either
Control or Trib (Tributary) mode.
key until Factory
, Sync Dial
Answer or Originate
Ld EditAr
, and
UNIX Dial
ea frm.
comes into view
, then press the F1 key to display the
Sync Leased, Async Leased, TMp
. If Sync Leased or Async Leased is selected, you
mode. If TMp is selected, you must choose either
s DCP (as
(Trellis Multipoint),
3.
Press the
key until the appropriate factory preset appears on the LCD, and press the
corresponding function key to select your choice. (For certain factory presets you will also
need to choose the appropriate mode.)
Choose Function appears and displays the Edit and Save functions.
4.
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.
(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
6.
Press the
key until the appropriate configuration area appears on the LCD, then press
Sav EditArea to.
the corresponding function key to select your choice. (Saving configuration options to the
Active (Saved) configuration area automatically saves them to the Active (Operating)
configuration area.) The LCD displays Command Complete.
7. The modem is now configured with the selected factory template. Press the
return to the Top-Level menu.
Refer to Chapter 4,
DCP Configuration,
for more information regarding default factory
configuration options.
key to
2-12 November 1996 3920-A2-GN31-30
Page 38
DCP Operation
Overview 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Control Panels 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Model 3920Plus Diagnostic Control Panel 3-3. . . . . . . . . . . . . . . . . . . . . . . .
Model 3921Plus Faceplate and Shared Diagnostic
Control Panel (SDCP) 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Status Indicators 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Control Panel Operation 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LCD Display 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hidden Choice Indicators 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other Indicators 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Keypad 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Menu Structure 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Top-Level Menu Status and Operational Messages 3-11. . . . . . . . . . . . . . . . .
Quick Configuration Display 3-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Status Branch 3-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Device Health and Status (DeviceHS) 3-18. . . . . . . . . . . . . . . . . . . . . . . . . . .
VF 3-20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displaying VF Conditions 3-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clearing VF Counters 3-22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Identity 3-23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTE 3-24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V.34 3-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Backup 3-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Options 3-28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Record 3-28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Log 3-29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configure Branch 3-30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Poll List Branch 3-30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Display 3-31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clear 3-32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Change 3-32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Add 3-33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Acquire 3-34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control Branch 3-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Speaker 3-36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reset 3-37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Data Stream 3-37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting All Ports 3-38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EIA LEDs 3-39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Make Busy/Remove Make Busy 3-40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Line/Disconnect Service Line 3-41. . . . . . . . . . . . . . . . . . . . . . . . . . .
Download Software 3-42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting Clone Remote 3-42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clone Remote in Point-to-Point Configurations 3-43. . . . . . . . . . . . . . . . .
Clone Remote in Broadcast Configurations 3-43. . . . . . . . . . . . . . . . . . . . .
Clone Remote in Multipoint Configurations 3-45. . . . . . . . . . . . . . . . . . . .
Implementing a Clone Remote Operation 3-48. . . . . . . . . . . . . . . . . . . . . .
Automatic Firmware Download 3-50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic Firmware Download Failure 3-50. . . . . . . . . . . . . . . . . . . . . . .
VF Thresholds Update 3-51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
3-13920-A2-GN31-30 November 1996
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COMSPHERE 392xPlus Modems
Test Branch 3-54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Abort 3-55. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Self 3-56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loc Analog Loop 3-57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rem Digital Loop 3-58. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loc Digital Loop 3-60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pattern 3-61. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sub-Network Health and Status Branch 3-64. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Call Setup Branch 3-65. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dial 3-66. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disconnect 3-67. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Answer 3-68. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dial Standby/Return to Dial 3-68. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Change Directory 3-70. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Entering Telephone Numbers and Dial Command Modifiers into
Directory Locations 3-71. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Directory Status (Does Not Appear in North America) 3-72. . . . . . . . . . . . . .
Talk/Data Branch 3-73. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual Dialing When the Remote Modem is Configured for
Auto-Answer 3-74. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual Dialing When the Remote Modem is Configured for
Manual Answer 3-75. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Security Branch 3-75. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Branch 3-76. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Control Panel Access 3-80. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overview
This chapter describes how to use the diagnostic control panel (DCP) of the 392xPlus modem. It
also describes how to select and use each branch of the T
Diagnostic Control Panels
There
are two types of diagnostic control panels (DCP), the DCP on the standalone
Model 3920
used with the Model 3921
a two-line, 32-character liquid crystal display (LCD) and keypad through which Top-Level menu
branches are accessed to perform the following:
•
• Set up configuration options
•
• Initiate and disconnect dial operations
• Access remote modems through the local modem’
The LCD displays the result of any command initiated using the DCP.
Plus modems and the shared diagnostic control panel (SDCP), an optional feature,
Check modem status
Initiate diagnostic tests
op-Level menu tree.
Plus installed into a COMSPHERE 3000 Series Carrier
s DCP
. Both DCPs have
3-2 November 1996 3920-A2-GN31-30
Page 40
DCP Operation
2
Model 3920
Plus
Diagnostic Control Panel
The diagnostic control panel (DCP) of the Model 3920Plus modem (Figure 3-1) contains status
indicators, pushbutton-type keys, an LCD, and speaker grill.
COMSPHERE 3920
Plus
F1 F2
DTR
PWR ALRM
DIAG
108 142
CTS TXD LSD RXD TEST
106
105
Figure 3-1. Model 3920
103
Plus
109
DCP
104
F3
SQRTS
RATE
DIAL
496-14412-0
Model 3921
Plus
Faceplate and Shared Diagnostic Control Panel (SDCP)
The shared diagnostic control panel (SDCP), Figure 3-2, is used to manage carrier-mounted
Model 3921
The faceplate of the Model 3921Plus contains LED status indicators that monitor the operation of
the modem. After the SDCP is connected to the modem, the Front Panel indicator of the selected
modem lights to show that the modem is connected.
Status Indicators
The 392xPlus modem status indicators continuously provide information on the modem’s
operating condition. All of the status indicators on the Model 3920Plus
(Figure 3-1), whereas the status indicators for the carrier-mounted Model 3921Plus are located on
the Model 3921
The standalone Model 3920
carrier-mounted Model 3921Plus has 20 LEDs. These LEDs are listed and described in Table 3-1.
LEDs specific to one model type have the appropriate model number shown in the table.
Plus
modems.
Plus modem’s faceplate and the SDCP faceplate (Figure 3-2).
Plus modem’s DCP has 13 light-emitting diodes (LEDs), and the
appear on the DCP
3-33920-A2-GN31-30 November 1996
Page 41
COMSPHERE 392xPlus Modems
Diag
Diag
Status
SDU
SINGLEPORT
OK
Alrm
In
Out
Status
142
125
103
104
105
106
107
108
109
Front Panel
3921
Plus
Pwr
Alrm
Test
Dial
RI
Busy
Serv
SQ
TXD
RXD
RTS
CTS
DSR
DTR
LSD
Spkr
MULTIPORT
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
3921
Plus
CARRIER SLOTS 1–16
SDU12345678910111213141516
Select
SELECT
KEY
OK Alarm BckUp Test EC
NETWORK
DEVICE
ALARM
BACKUP
Figure 3-2. Optional SDCP and Model 3921
OK Alarm BckUp Test EC
STATUS
INDICATORS
DIAL
CORRECTION
TEST
MODE
ERROR
F1 F2 F3
KEYPAD
Plus
Faceplates
COMSPHERE 3000
496-14676-01
LCD
3-4 November 1996 3920-A2-GN31-30
Page 42
392x
Table 3-1
(1 of 2)
Plus
DCP LEDs
DCP Operation
Label
Pwr green Power
Alrm red Flashing – A major alarm has been detected in a remote 392x
Diag
Color Indicates
has been applied to the modem.
Plus
modem.
ON – A major alarm has been detected in the local modem. (For Health and Status
alarm conditions, refer to Table
chapter.)
green The modem is receiving diagnostic communications (either a command or a status poll).
3-6 in the
Device Health and Status
section of this
(3920Plus
only)
Test/142 yellow Flashing – The modem is involved in a firmware upgrade. Normal operation is not
possible.
ON – The modem is involved in a test. Normal operation is not possible.
OFF – The modem is not involved in a test or firmware upgrade.
Dial yellow Flashing – The modem is attempting to establish a call over the dial network, or the
modem is in Dial Standby mode.
ON – The modem has established a dial connection.
OFF – A dial connection does not exist.
RI/125
green A ringing signal is being received.
(3921Plus
only)
Busy
yellow The modem is placed in a forced busy condition and is off-hook.
(3921Plus
only)
Serv
(3921Plus
yellow The modem’s dial line is connected to the carrier service line rather than the normally
assigned dial network.
only)
SQ yellow The receive telephone line signal is degraded or the modem’s data path has been
blocked (SQ flashes).
Rate
(3920Plus
only)
Front Panel
yellow ON – The modem is connected at a data rate lower than the data rate it is configured for.
OFF – The modem is connected at its configured data rate.
yellow The modem is connected to the carrier’s SDCP.
(3921Plus
only)
3-53920-A2-GN31-30 November 1996
Page 43
COMSPHERE 392xPlus Modems
Table 3-1
(2 of 2)
392x
Plus
DCP LEDs
Label IndicatesColor
Port*
1,2,3,4
(3921Plus
multiport only)
TXD/103* green The modem is receiving data from the
RXD/104* green Data is being transferred to the
RTS/105* green RTS signal is ON for the
CTS/106* green CTS signal is ON for the
DSR/107*
(3921Plus
only)
DTR/108* green The
LSD/109* green The modem has detected a valid carrier signal and is capable of transferring data to the
* The
selected port
Plus
(3920
DSR, DTR, and LSD will indicate the status of the EIA signals on the Port 1 interface of the multiplexer. For information
about making this selection, refer to the
selected, refer to the
green ON – The
OFF – The
green DSR signal is ON for the
selected port*
is one of the mux ports (1, 2, 3, or 4) or the Network Management System (NMS) diagnostic interface
only). For example, when the
Quick Configuration Display
selected port*
port*
is not selected.
selected port*
.
selected port
Control Branch
is one of the mux ports (either 1, 2, 3, or 4).
selected port*
selected port*
selected port*
selected port*
selected port*
has turned ON DTR.
is Port 1 of the mux, the EIA indicators for TXD, RXD, RTS, CTS,
section of this chapter. To display the port which has been
section of this chapter.
.
.
.
to transmit. (ON equals space.)
. (ON equals space.)
The SDCP LEDs are listed and described in Table 3-2.
Table 3-2
SDCP LEDs
Label Color Indicates
OK green Power is ON and the modem is capable of operating.
Alarm red The selected modem detects a problem with its operation. For example, the modem
failed a self-test.
BckUp yellow The selected modem is operating on the backup network (dial or dual leased).
Test yellow The selected modem is involved in a test. Normal operation is not possible.
EC green The selected modem is in V.42/MNP Error Control mode.
3-6 November 1996 3920-A2-GN31-30
Page 44
Diagnostic Control Panel Operation
The 392xPlus modem’s diagnostic control panel (DCP) is the user interface to all functions used to
configure and control the modem. In addition to the status LEDs, this interface includes the liquid
crystal display (LCD) and keypad (Figure 3-3).
LCD TO
P L
INE HIDDEN CHOICE
MOVES
UP ONE
LEVE
L F
ROM
CURRENT
DISPLAY
Leased:28.8
Status Configure
INDICATOR
RETURNS
DISPLA
Y T
TOP-LEVEL
MENU
DCP Operation
O
LEFT
SCROLL
KEY
LCD Display
The LCD consists of a top line and bottom line, with each displaying a maximum of 16 characters
at a time. If more information is available on the LCD than what is currently displayed, a hidden
choice indicator ( < ,
key to scroll in the indicated direction to display more selections onto the LCD.
Hidden Choice Indicators
The
Hidden Choice Indicators serve as an alert that other selections are available besides what is
currently displayed on the LCD. These indicators appear as one of the following symbols:
LCD BOTTO
Figure 3-3. 392x
F3
LCD and Keypad
RIGHT
SCROLL
KEY
M L
F1
FUNCTION KEYS
INE
F2
Plus
, or > ) appears in the upper right-hand corner of the LCD. Use the or
Right Scroll Indicator >
The right scroll indicator appears when more choices are available to the right of what is
currently displayed on the LCD.
Left/Right Scroll Indicator
The left/right scroll indicator appears when more choices are available to the left and right
of what is currently displayed on the LCD.
Left Scroll Indicator <
The left scroll indicator appears when more choices are available to the left of what is
currently displayed on the LCD.
3-73920-A2-GN31-30 November 1996
Page 45
COMSPHERE 392xPlus Modems
Other Indicators
Other indicators may turn on depending on existing conditions, such as error detection,
informational alerts, and warnings. These indicators appear on the top or bottom line of the LCD.
Remote Mode Indicator
Keypad
If the local 392xPlus
Remote branch, then
modem establishes a connection with the remote 392x
Plus modem via the
appears in the upper right corner of the LCD top line on both modems.
For more information on the Remote Mode indicator, refer to Remote Branch in this chapter.
Out of Range Indicator
If an invalid threshold (out of range) is selected in the VF Threshold update process, then
appears in the lower right corner of the LCD bottom line. For more information on the Out of
Range indicator
The DCP on the Model 3920
3000 Series Carrier has eight keys. The additional key on the carrier is the
, refer to VF Thr
Plus
esholds Update
in this chapter.
has seven keys while the optional SDCP of the COMSPHERE
key
Select
, used to
connect the SDCP to a specific slot in the carrier.
Key
The key returns you to the Top-Level menu display from anywhere in the menu tree.
Pressing
es No
Y
Top-Level menu appears. If Yes
while changing configuration options displays the message
. If No
is selected, changes made to configuration options are not saved and the
is selected, then changes are saved to either Active
Save Straps?
(Saved), Customer 1, or Customer 2 configuration areas.
Key
The
key moves you up one level in the menu tree.
and Keys
Use the
remaining branches and selections into view
and
keys to move the viewing window left or right and to scroll the
. A maximum of three selections can be
displayed at one time.
These keys also allow you to move the cursor one character to the left or right on data
entry displays; for example, to allow entry of one digit at a time.
3-8 November 1996 3920-A2-GN31-30
Page 46
DCP Operation
F1 F2 F3
Select
Menu Structure
The menu tree is a hierarchical structure used to display functions that configure and control local
and remote 392xPlus
Keys
Function keys F1, F2, and F3 select the LCD choice that appears above the function key
Refer to the Summary section in Chapter 4 for the exception.
If the displayed LCD choice spans more than one function key, then any of the function
keys select that choice.
NOTE
In the screen examples, the F1 key is highlighted where multiple
function keys select the choice.
Key (Model 3921Plus only)
The
key appears on the optional SDCP of the COMSPHERE 3000 Series
Select
Carrier. It is used to connect the SDCP to a modem in a specific slot in the carrier.
modems. It is accessed via the DCP and is shown in Appendix
A.
.
Status PList
Configure
Control
Test
“Status”
SubHS
Displays
with the data rate and the error control mode.
Call_Setup
the current status of the modem along
Security
Tlk/Data
Remote
3-93920-A2-GN31-30 November 1996
Page 47
COMSPHERE 392xPlus Modems
The menu tree contains the following branches:
Status — Used to monitor the current status of the VF line and DTE interface as well
Configure —
PList — (Poll List) Used to identify downstream modems in order to support
Control — Used to control the modem’s hardware and software functions.
est
T
SubHS — (Sub-Network Health and Status) Used to display alarm conditions in
Call Setup —
Talk/Data —
Security — Used to control the modem’
Remote —
as view the identity of the modem.
Used to change and save the modem’
s configuration options.
multipoint health and status polling and multipoint link download
broadcasting.
—
Used to begin and end various modem tests.
downstream modems.
Used to dial, disconnect, and answer telephone calls as well as store up to 24
telephone numbers in directory locations.
Used to switch the modem between Talk mode (the modem is disconnected
from the VF line) and Data mode (the modem is connected to the VF line)
when dialing via either the DCP or a telephone.
s dial access security
. (The Security branch only
appears in Singleport mode.)
Used to access and control a remote 392x
Plus modem.
All menu tree branches are discussed later in Chapter 3 except for Configure, which is discussed in
Chapter 4, and Security
, which is discussed in Chapter 6. Functions that appear on the LCD vary
depending upon the type of model installed, its operating mode, and software configuration.
3-10 November 1996 3920-A2-GN31-30
Page 48
Top-Level Menu Status and Operational Messages
p
Access to all menu tree branches from the DCP begins at the Top-Level menu, the head of the
menu hierarchy. The LCD’
bottom line displays the main menu tree branches as well as operational and security messages, as
listed in Table 3-4 and Table 3-5.
s top line identifies the modem status, as listed in T
Table 3-3
(1 of 3)
Top-Level Menu Status
DCP Operation
able 3-3, while the
Status
Normal Operation
Alarm*** Make Busy The modem is in a Make Busy condition.
Call Setup Off Hook The modem is off-hook and waiting to dial a telephone number.
Dial Backup or
Leased Backup
* MR. Modem Rate indicates the data rate the modem is using. One of the following values appears: 300, 1200,
2400, 4800, 7200, 9600, 12.0 (12,000), 14.4 (14,400), 16.8 (16,800), 19.2 (19,200) 21.6 (21,600), 24.0 (24,000),
26.4 (26,400), 28.8 (28,800), 31.2 (31,200), or 33.6 (33,600) bps.
** EC. Error Control indicates the modem is online and using V.42 or MNP error control. One of the following values
appears after the modem rates listed above: MNP2, MNP3, MNP4, MNP5, V42, V42b, or NoEC. (NoEC indicates
the modem is connected in Buffer mode rather than error control. If an EC value does not appear
is in Direct mode.)
*** The Alarm Status Messages only appear when the Normal Operation Status Messages appear; the LCD alternates
between the two message sets.
**** The Training message may also appear in normal Trellis Multipoint (TMp) operation.
Message Indicates
Leased:
Idle:
OnLine:
Ring Indicate The local modem is receiving an incoming ring.
Test:
Power On Fail The modem has failed its Power-On Self-test.
SelfHealth Fail A failure has occurred in the modem’s hardware components.
Dialing
Remote Ring The remote modem is ringing.
Training**** The modem is training or retraining.
EC Negotiating The local and remote modems are negotiating the highest possible level of
Stndby:MR* The modem is operating in Dial Standby mode.
DialBckUp:
Backup:
EC**
Stndby:
MR*
MR*
MR* EC**
MR*
MR*
MR* EC**
MR*
The modem is operating on leased lines and receiving at the displayed data
rate.
The modem is configured for dial network operation and is on-hook.
The modem is online, in Data mode, and operating at the displayed data
rate. EC (error control) appears if error control is operational.
The modem is in test mode operating at the displayed data rate.
The originating modem is dialing a telephone number
error control compatible between both modems. Once a level is selected,
this LCD message disappears.
The modem is operating in a Dial Backup mode at the displayed data rate
and is configured for Direct mode.
The modem is operating in Dial Backup mode and is configured for error
control and data compression on leased lines.
The modem is operating in Dial Standby mode and is configured for error
control and data compression on leased lines.
.
, then the modem
3-113920-A2-GN31-30 November 1996
Page 49
COMSPHERE 392xPlus Modems
Table 3-3
(2 of 3)
Top-Level Menu Status
Status IndicatesMessage
Call Failure Busy Signal The answering modem is busy.
Delayed
Number{
Dial Line in Use The modem is operating on dial networks when another call attempt is
Forbidden
Number{
Invalid Number The modem has dialed a telephone number not stored in a directory
Line Occupied{{
No Answer Tone The answering modem did not answer within the time limit specified by the
No Dial-DTR The modem cannot dial because DTR is OFF.
No Dial-Test The modem cannot dial because it is running a Test.
No Dial Tone The modem has aborted the call because it cannot detect a dial tone.
No Quiet Answer The modem has detected No Quiet Answer (@) before the time-out setting
Ringback
Timeout
Trunk Busy The modem is receiving a fast (trunk) busy.
Wrong Call The call was answered, but not by a modem. No answer tone.
{ The Delayed Number and Forbidden Number messages appear only in countries where the number of repeat call
attempts are restricted. The regulations vary in each country. If the number is delayed, the value of the delay
(in minutes) can be displayed by entering Directory Status (see
{{ The Line Occupied message appears only in countries where the Offhook Detector is enabled. The purpose of the
Offhook Detector is to detect whether the telephone associated with the modem is off-hook. It is enabled on a per
country basis, and this setting can not be changed by a command. The Offhook Detector is enabled in Austria,
Germany, and Switzerland.
As a result of failed call attempts, this number can not be called at this time.
Please try again later.
issued.
As a result of failed call attempts, this number can not be called again.
location.
The line is being used by the associated telephone.
No Answer Timeout configuration option. The network tones (if any) could
not be interpreted by the modem.
of the No Answer Disconnect configuration option.
The answering modem did not answer within the time limit specified by the
No Answer Timeout configuration option. A ringback signal was detected.
Call Setup Branch
).
3-12 November 1996 3920-A2-GN31-30
Page 50
Table 3-3
(3 of 3)
Top-Level Menu Status
Status IndicatesMessage
Call Disconnect ATH Disconnect The modem has disconnected due to an ATH command.
Bad Lines Disc The modem has disconnected because the lines do not support the
modulation and/or data rate selected.
No Carrier Disc The modem disconnects due to the loss of carrier signal from the remote
modem.
DTR Disconnect The modem has disconnected due to the loss of DTR from the DTE.
EC Disconnect The modem has disconnected due to failure to negotiate Error Control
mode.
Inv Rate Disc When using V.32bis modulation, the remote modem does not support the
data rate used by the local modem.
LnCurrnt Disc The modem has disconnected due to the loss of line current.
LongSpace Disc The modem has disconnected due to the detection of a long space.
NoData Disc The modem has disconnected due to a lack of transmitted and received
data.
Disconnecting The modem has begun the disconnect sequence.
RmtCmnded Disc The modem has disconnected due to a V.32 Cleardown received from the
remote modem.
Talk Mode The modem is in Talk mode.
Firmware
Download Result
AT Command
Reset
DownldOnly
Mode
Frmware
Upgrade
RemClone Failed A remote cloning of firmware has failed. This message appears on the local
Remote Clone
OK
Bcast Clone
Done
Reset by AT
command
A local download of firmware or a remote cloning of firmware has failed.
The modem is currently in a Download Only mode in which only another
download attempt is possible.
A local download of firmware or a remote cloning of firmware was
successful.
modem’s LCD.
A remote cloning of firmware was successful. This message appears on the
local modem’s LCD.
A broadcast cloning of firmware is complete. Look under the Control branch
for multipoint cloning results. This message appears on the local modem’s
LCD.
The modem has performed a reset in response to an ATZ command.
DCP Operation
3-133920-A2-GN31-30 November 1996
Page 51
COMSPHERE 392xPlus Modems
Messages listed in Table 3-4 are common operational messages that occur during modem
operation. These messages normally appear on the second line of the LCD.
Table 3-4
Common Operational Messages
Common
Operational Message
Please Wait... A command to a local device takes more than two seconds to complete.
Command Sent... A command is sent to a remote modem.
No Rem Response or
Remote Modem Fail
Command Complete A command, issued to a local or remote modem, is completed.
Invalid Command The modem cannot complete a command.
A remote modem does not respond to a command within 5 seconds.
Messages listed in T
able 3-5 are dial access security messages.
Indicates
Table 3-5
Dial Access Security Messages
Dial Access
Security Message
Get VF PsWd The answering modem is waiting for the originating caller to transmit a VF password.
Get DTE PsWd The answering modem is waiting to receive a valid DTE password from the remote DTE.
VF PsWd Timeout The modem did not finish answering a call (disconnected) because the allowed time limit
was exceeded before the modem received a VF password from the originating dialer.
Unknown DTEpswd The modem did not finish answering a call (disconnected) because the DTE passwords
received from the remote DTE were invalid.
No Orig PsWd The modem did not attempt to establish a call as requested because the A
command did not contain an originate access password.
Unknown VF PsWd The modem did not finish answering a call (disconnected) because the modem received
an invalid VF password.
DTEpswd Timeout The modem did not finish answering a call (disconnected) because the allowed time limit
was exceeded before the modem received a DTE password from the remote DTE.
Inval Orig PsWd The modem did not attempt to establish the call as requested because the originate
password in the AT dial command was not valid.
DTR Dial Blocked DTR dialing is not permitted when security is enabled. This message appears if DTR
dialing is used and Answer Access or Originate Access security is enabled.
SecurityBlocked The access verification capabilities are not available and the modem does not pass data
to the DTE under any circumstances. This message appears only when the modem is in
base mode (a mode that occurs during a firmware download) and Answer Access
Security is enabled.
Indicates
T dial
3-14 November 1996 3920-A2-GN31-30
Page 52
The Top-Level menu’s main branches appear on the LCD in the order of Status, Configure,
Control, T
est, Call Setup, T
chapter except for the Configure branch which is reserved for Chapter 4,
the Security branch which is reserved for Chapter 6,
Quick Configuration Display
The Quick Configuration display indicates the basic operational characteristics of the modem.
alk/Data, Security
Leased:28.8
Status Configure
DCP Operation
, and Remote. These branches are discussed in this
DCP Configuration, and
Dial Access Security
.
F1
F2
F3
The modem’s Quick Configuration information appears on the LCD’s bottom line.
To access the Quick Configuration display from the Top-Level display
, press the
on the configuration of the modem, one of two screens appear.
If the modem is not operating with V.34 modulation, the following screen appears.
Leased:19.2 >
abbb cdd ee ffff
F1
F2
F3
If the modem is operating with V.34 modulation, the following screen appears.
xxxx yyyyy zz >
abbb cdd ee ffff
F1
F2
F3
key
. Based
The V.34 modulation Quick Configuration information appears on the LCD’
NOTE
In Dial mode, where Automode automatically adapts to the
modulation scheme of the remote modem, the V.34 Quick
Configuration display may not necessarily indicate the actual (V.34)
online modulation.
For more information on V.34, refer to the V.34
section in this chapter
.
s top line.
3-153920-A2-GN31-30 November 1996
Page 53
COMSPHERE 392xPlus Modems
The following provides information about the Quick Configuration LCD display.
a Displays the network position of the modem. The letter C
indicates this is a
control modem, and T indicates this is a tributary modem.
bbb
Displays the network management address of the modem. The valid address field
range is from 001 to 256.
c Displays the DTE mode. The letter A
Asynchronous mode, and
S indicates the currently selected port is in Synchronous
indicates the currently selected port is in
mode. If the NMS channel is selected, the letter in this location (A or S) will
indicate the status of Port 1. (The NMS channel is always in Asynchronous
mode.)
dd
Displays the line mode. The letters LA indicate Leased Answer mode,
indicate Leased Originate mode, and D
indicates Dial mode.
LO
ee Displays the modem DTE port that currently appears by the EIA status indicators
on the DCP
CC
DC
.
indicates Control Channel.
indicates Diagnostic Channel.
P1 indicates Port 1 in Singleport mode.
The following only appear on the 392x multiport modem:
M1
M2
M3
M4
indicates Port 1 when TDM/MSD is enabled.
indicates Port 2 when TDM/MSD is enabled.
indicates Port 3 when TDM/MSD is enabled.
indicates Port 4 when TDM/MSD is enabled.
B1 indicates Port 1 when DTE Bridge is enabled.
B2 indicates Port 2 when DTE Bridge is enabled.
ffff
Displays the modem’
V34
V32t
V32b
V32
indicates V
indicates V
indicates V
indicates V
s modulation scheme as shown below:
.34 family modulation.
.32 terbo modulation.
.32bis modulation.
.32 modulation.
TMp indicates Trellis Multipoint modulation.
V22b
V27b
V33
V29
V22
V23
V21
212A
103J
indicates V
indicates V
indicates V
indicates V
indicates V
indicates V
indicates V
indicates Bell 212A modulation.
indicates Bell 103J modulation.
.22bis modulation.
.27bis modulation.
.33 modulation.
.29 modulation.
.22 modulation.
.23 modulation.
.21 modulation.
xxxx Modem T
ransmit Rate indicates the rate at which the modem is transmitting data.
Possible values are 2400, 4800, 7200, 9600, 12.0 (12,000), 14.4 (14,400),
16.8 (16,800), 19.2 (19,200), 21.6 (21,600), 24.0 (24,000), 26.4 (26,400),
28.8 (28,800), 31.2 (31,200), or 33.6 (33,600) bps.
yyyyy
Symbol Rate indicates the baud rate used by V
.34 modulation. Refer to CCITT
specifications. Possible values are 3429, 3200L, 3200H, 3000L, 3000H, 2800L,
2800H, 2743L, 2743H, 2400L, 2400H.
zz Transmit Level indicates the power level at which the modem is transmitting
when running V
.34 modulation. Possible values are 01–
64 dBm.
To exit the Quick Configuration function and return to the Top-Level menu, press the , ,
or
key
.
3-16 November 1996 3920-A2-GN31-30
Page 54
Status Branch
The Status branch of the Top-Level menu allows you to view the current status of the leased-line
or dial connection, the identity (for example, serial number and model number) of your equipment,
and the DTE interface.
DCP Operation
“Status”
Configure
Status
DeviceHS VF Identity DTE Options Record
Major
Minor
Status
Dial
Thresh
Security
Port1
Port2
Port3
Port4
Display Clear
SigQual
RcvLevel
Sig/Noise
NrEchLvl
FarEchLv
FarEchDel
EchoFreqOff
Phase
H
ts
Impu
l H
ts
DropOuts
Retrains
Phas Jtr
NonLinear
FreqOffset
Gai
n H
ts
PList Control Test SubHS Call_Setup Tlk/Data Security Remote
Port
Select
V.34 Backup
Ser#
Mod#
FRev
HPt#
FPt#
Country
LSD
DTR
DSR
Tst
TXD
RXD
RTS
CTS
TxRate
RxRate
SymbolRate
Tx Level
AsymRate
Line = Pri 4W APL
Line = Pri 2W APL
Line = Bkup 2W APL
Line = Dial Backup
Line = Dial ONL
Line = No Sync
Y
Display
Clear
Service_Log
To
access Status from the T
Leased:28.8
Status Configure
F1
op-Level menu, select Status.
F2
F3
3-173920-A2-GN31-30 November 1996
Page 55
COMSPHERE 392xPlus Modems
Device Health and Status (DeviceHS)
DeviceHS provides a ‘‘snapshot” of current modem alarms which are active at the time the
DeviceHS function is selected.
T
o access DeviceHS from the Status branch, make the following selection:
Status: >
DeviceHS VF
F3
Select
DeviceHS.
F1
F2
Device HS: >
Major Minor
F1
If
alarms are present, press the appropriate function key to view the messages associated with these
F2
F3
alarms (Table 3-6). If needed, press the key to scroll to additional alarm types. If no alarms are
present, the word Normal
appears on the LCD.
Table 3-6
(1 of 3)
Health and Status Messages
Type
Major
Minor VF Threshold One or more of the analog parameter thresholds have been exceeded. The
Message Indicates
Device Failure A device/self test has failed. The probable cause is a modem hardware problem
or diagnostic memory failure.
Facility Fault A severe data transport problem is occurring due to poor line conditions. No
signal or a very poor signal is being received.
Streaming DTE The modem is in an antistreaming condition. The RTS input to the modem was
held ON for a period exceeding the time selected by the RTS Antistream
configuration option. (Refer to the
description of the RTS Antistream configuration option.)
Access Security A dial access security alarm is active. (Refer to the
for dial access security conditions.)
probable cause is poor line conditions or improper threshold settings.
Thresholds may be set through the DCP or NMS commands.
DTE Alarm One or more of the DTE signals on one or more of the DTE ports are in alarm
mode. (Refer to the
conditions.)
Rate Fallback Due to poor line conditions, the modem’s transmit rate is below the configured
rate. (Refer to the
description of configuration options affecting rate.)
Port 1, 2, 3, 4
Leased Line
DTE Interface
section of this table for DTE alarm
and
Dial Line
section in Chapter 4 for a
Security
sections in Chapter 4 for a
section of this table
3-18 November 1996 3920-A2-GN31-30
Page 56
DCP Operation
Table 3-6
(2 of 3)
Health and Status Messages
Type IndicatesMessage
Status Subtree Truncate Downstream health and status information has been truncated because it
overflowed system limits. There is a large amount of health and status
information in the subnetwork.
Test Mode The modem or an upstream device is running a disruptive test.
Disabled The modem’s DTE port has been disabled.
On Dial Backup The modem is operating in Dial Backup mode.
FW Downloading A firmware download is in progress.
Primary Line Good The modem is currently operating on the 2-wire backup facility, the Lease
Lookback option is enabled, and the modem detects continuity on the primary
4-wire leased lines.
Backup Line Bad The modem is currently operating on the primary 4-wire leased facility with
2-wire leased lines selected as the backup facility, the BackupLineCheck
configuration option is enabled, and the modem detects continuity on the 2-wire
backup leased lines.
Data Blocked The modem’s data path is blocked.
On Lease Backup The modem is operating in 2-wire Leased Backup mode.
PSTN Test Fail The modem failed either the Dial Tone Detection or the Ring Tone Detection
portion of the Call Test command.
Dial Make Busy Mode The modem is in a Make Busy condition.
Service Line
Short Hold Time The modem’s dial hold time has been shortened.
Non-Answering The modem is in a non-answering mode.
Thresh* RSL High Threshd The received signal level (RSL) has exceeded the upper threshold.
RSL Low Threshld The RSL is less than the lower threshold.
SNR Threshold The signal-to-noise ratio has exceeded the threshold.
Non-linear Dist The non-linear distortion exceeded the threshold.
Retrains The number of retrains exceeded the threshold.
Signal Quality The signal quality is less than the threshold.
Far Echo Threshd The far end echo level exceeded the threshold.
Near Echo Thresh The near end echo level exceeded the threshold.
Phase Jitter The phase jitter level exceeded the threshold.
Phase Hit Thresh The number of phase hits has exceeded the threshold.
Impulses Hit The number of impulse hits exceeded the threshold.
Gain Hit Threshld The number of gain hits exceeded the threshold.
Drop Outs Thresh The number of drop outs exceeded the threshold.
Frequency Offset The frequency offset level exceeded the threshold.
* Not supported in every modulation.
(Model 3921
Carrier has been switched to a service line.
Plus
only) The modem installed in a COMSPHERE 3000 Series
3-193920-A2-GN31-30 November 1996
Page 57
COMSPHERE 392xPlus Modems
Ports 3
Table 3-6
(3 of 3)
Health and Status Messages
Type IndicatesMessage
Security Database Reset The security database has been reset (passwords erased).
Password Protect Security password protection is enabled.
Mode Change There has been a change in security mode. (Refer to Chapter 6,
.)
Ports 1
Ports 2
Ports 3
Ports 4
Security
Password Change A security password has been changed.
Database Change The security database containing passwords has been changed.
Rx Data Alarm The alarming DTE port’s RXD signal is in an alarm condition.
Tx Data Alarm The alarming DTE port’s TXD signal is in an alarm condition.
DTR Alarm The alarming DTE port’s DTR signal is in an alarm condition.
CTS Alarm The alarming DTE port’s CTS signal is in an alarm condition.
RTS Alarm The alarming DTE port’s RTS signal is in an alarm condition.
DSR Alarm The alarming DTE port’s DSR signal is in an alarm condition.
LSD Alarm The alarming DTE port’s LSD signal is in an alarm condition.
Auto Stream Dis The port is disabled due to an antistreaming condition. (Refer to the Streaming
DTE message in the Major Alarm section of this table.)
Disabled The modem’s alarming DTE port has been disabled.
Dial Access
VF
T
o exit DeviceHS and remain in the Status Branch, press the key
key
Top-Level menu, press the
.
. To exit and return to the
VF enables you to display the condition of the leased or dial connection. VF also allows you to
clear the VF counters.
To access VF from the Status branch, make the following selection:
Status:
DeviceHS VF
F1
F2
F3
Select VF. The selections Display or Clear appear on the LCD’s bottom line.
3-20 November 1996 3920-A2-GN31-30
Page 58
Displaying VF Conditions
DCP Operation
Status:VF
Display Clear
F1
To
display VF conditions, select Display from the Status:VF screen.
F2
F3
Status:VF >
SigQual=Excelent
F1
F2
F3
If the modem is receiving a signal, the signal quality appears on the LCD’s bottom line. If the
modem is not receiving a signal, the message
Press the
key to scroll and view the VF conditions.
No Signal
appears.
NOTE
Not all conditions are available at 4800 bps.
SigQual Signal
Quality displays the condition of the VF line. Possible values are
Excelent (Excellent), Good, Fair, Poor, or
for V.34, V.32 terbo, V
.32bis, and V
No Signal
.32 modulations.
. These parameters appear
RcvLevel Receive Signal Level displays, in decibels referenced to one milliwatt (dBm),
the actual strength of the incoming signal. This parameter appears for V.34,
Sig/Noise
V.32 terbo, V
Signal-to-Noise Ratio displays, in decibels, the receive signal strength relative to
noise on the line. This parameter appears for V.34, V.32 terbo, V
.32bis, V
.32, and Trellis Multipoint modulations.
.32bis, V
.32,
and Trellis Multipoint modulations.
NrEchLvl Near End Echo Level displays the signal level, in decibels referenced to one
milliwatt (dBm), of that portion of the transmit signal which has been echoed
back by the local line termination. This parameter appears for V.34, V.32 terbo,
V
.32bis, and V
.32 modulations (in 2-wire only).
FarEchLvl Far End Echo Level displays the signal level, in decibels referenced to one
milliwatt (dBm), of that portion of the transmit signal which has been echoed
back by the remote line termination. This parameter appears for V.34,
V.32 terbo, V
.32bis, and V
.32 modulations (in 2-wire only).
FarEchDel Far End Echo Delay displays the roundtrip delay in milliseconds of the far end
echo. This parameter appears for V.34, V.32 terbo, V
.32bis, and V
.32
modulations (in 2-wire only).
3-213920-A2-GN31-30 November 1996
Page 59
COMSPHERE 392xPlus Modems
EchoFreqOff Echo Frequency Offset displays the frequency offset of the far end echo. This
Phase Hts Phase Hits reports the total hit count of sudden uncontrolled changes in the
Impul Hts Impulse Hits reports the total hit count of large burst or spikes that are larger
DropOuts Drop Outs reports the total number of large reductions in channel gain for the
Retrains Retrains displays the number of retrains over the last 15 minutes of operation.
parameter appears for V.34, V.32 terbo, V
.32bis, and V
.32 modulations (in
2-wire only).
phase of the receive signal for the past 15 minutes. This parameter appears for
V.32 terbo, V
.32bis, and V
.32 modulations (in 4-wire only).
than normal peaks of random white noise for the past 15 minutes. This
parameter appears for V.32 terbo, V
.32bis, and V
.32 modulations (in 4-wire
only).
past 15 minutes. This parameter appears for V.32 terbo, V
.32bis, and V
.32
modulations (in 4-wire only).
The total 15-minute accumulation is updated every minute. This parameter
appears for V.32 terbo, V
.32bis, V
.32, and Trellis Multipoint modulations (in
4-wire only).
Phas Jtr
NonLinear
FreqOffset Frequency Offset reports the variation in all frequencies in the voice band. This
Gain Hts Gain Hit reports the total number of rapid changes in the receiver power level
Clearing VF Counters
The
Phase Jitter is the non-constant variation in the phase of the receive signal
carrier. The jitter is typically introduced by analog power supplies and is
predominantly sign waves with a frequency of 50 Hz or 60 Hz. This parameter
appears for V.32 terbo, V
.32bis, and V
.32 modulations (in 4-wire only).
Non-Linear Distortion displays distortion which is usually associated with
pulse-code modulation (PCM) compandor noise on the phone line. This
parameter appears for V.32 terbo, V
.32bis, V
.32, and Trellis Multipoint
modulations (in 4-wire only).
parameter appears for V.32 terbo, V
.32bis, and V
.32 modulations (in 4-wire
only).
for the past 15 minutes. This parameter appears for V.32 terbo, V
.32bis, and
V.32 modulations (in 4-wire only).
Clear command resets the retrain, impulse hits, gain hits, phase hits, and drop outs.
Status:VF
Display Clear
F1
To
clear the VF counters, select Clear
3-22 November 1996 3920-A2-GN31-30
F2
F3
.
Page 60
VF Counter Clear
Command Complete
DCP Operation
Identity
F3
The
message
F1
F2
Command Complete appears on the LCD’s bottom line indicating the VF Counters
are cleared.
o exit VF and remain in the Status Branch, press the
T
menu, press the
Identity displays the modem’
key
.
s serial number
, model number, firmware revision level, hardware
key
. To exit and return to the Top-Level
revision number and firmware part number. Retrieval of this information is useful if you are
purchasing additional or replacement modems and/or making firmware upgrades.
To access Identity from the Status branch, make the following selection:
Status:
VF Identity
F3
Press the
F1
F2
key until Identity appears. Select Identity.
Status:Identity >
Ser#=00000000
F1
F2
The modem’s serial number appears on the LCD’
F3
s bottom line. Press the
key to scroll and
view the model number, firmware revision level, hardware part number, and firmware part number.
Ser #
Serial number is an 8-digit number that identifies the modem.
Mod # Model number is an alphanumeric number that identifies the modem as
either a Model 3920
Plus or Model 3921Plus modem.
FRev Firmware revision level is an alphanumeric number that identifies the level
of firmware loaded in the modem.
HPt # Hardware part number is an 11-digit number that identifies the circuit card in
the modem.
FPt # Firmware part number is an 11-digit number that identifies to service
personnel the firmware release number.
Country Country code is a 7-text character that identifies the current country code.
To exit the Identity function and remain in the Status branch, press the
to the Top-Level menu, press the
key
.
key
. To exit and return
3-233920-A2-GN31-30 November 1996
Page 61
COMSPHERE 392xPlus Modems
DTE
DTE displays the state and/or activity of the following interface leads: LSD, DTR, DSR, TST,
TXD, RXD, R
To access DTE from the Status branch, make the following selections:
TS, and CTS. The interface leads status is updated every 5 seconds.
Status:
Identity DTE
F1
F2
F3
Press the key until DTE appears. Select DTE.
Select DTE Port >
Port1 Port2
F1
F2
Select the appropriate port by pressing the corresponding function key
F3
. Press the
key to scroll
other ports into view. Only Ports 1 and 2 appear when the the DTE Bridge configuration option is
enabled.
This screen does not appear in Singleport mode.
LSD DTR DSR Tst>
_ * _
F1
F2
F3
The activity and state of the modem’s DTE signal appear on the LCD’
key to scroll other signals into view
.
s bottom line. Press the
The LCD’s bottom line displays a pair of symbols for each interface lead. The first symbol
indicates the signal’
s activity since entering the DTE status display
. An * (asterisk) indicates at
least one transition while a blank space indicates no transitions.
The second symbol indicates the state of the interface lead at the sampling time. A
(solid block)
indicates a Space or ON condition while an underscore ( _ ) indicates a Mark or OFF condition.
key
To exit this function and remain in the Status branch, press the
Top-Level menu, press the
3-24 November 1996 3920-A2-GN31-30
key
.
. To exit and return to the
Page 62
V.34
DCP Operation
When running V.34 modulation, this function displays information about the modem’
and transmitting data rate, symbol rate, transmitting level, and asymmetric rate.
NOTE
The V.34 status display is available only when the modem is
configured for V.34 modulation.
To
access V
.34 from the Status branch, make the following selection:
Status:
DTE V.34
F3
Select V
.34.
F1
F2
Status: V.34
TxRate = xxxx Kbps
s receiving
F1
If
the modem is receiving a signal, the signal quality appears on the second LCD line. Press the
F2
F3
key to scroll and view the V.34 modem receive rate, symbol rate, transmit rate, and
asymmetric. If the modem is not receiving a signal, the message
TxRate Modem T
ransmit Rate indicates the rate at which the modem is transmitting
No Sync
appears.
data. Possible values are 2400, 4800, 7200, 9600, 12.0 (12,000), 14.4 (14,400),
16.8 (16,800), 19.2 (19,200), 21.6 (21,600), 24.0 (24,000), 26.4 (26,400),
28.8 (28,800), 31.2 (31,200), or 33.6 (33,600) bps.
RxRate
Modem Receive Rate indicates the rate at which the modem is receiving data.
Possible values are 2400, 4800, 7200, 9600, 12.0 (12,000), 14.4 (14,400),
16.8 (16,800), 19.2 (19,200), 21.6 (21,600), 24.0 (24,000), 26.4 (26,400),
28.8 (28,800), 31.2 (31,200), or 33.6 (33,600) bps.
SymbolRate
Symbol Rate indicates the baud rate used by V
.34 modulation. Refer to CCITT
specifications. Possible values are 3429, 3200L, 3200H, 3000L, 3000H,
2800L, 2800H, 2743L, 2743H, 2400L, 2400H.
TxLevel Transmit Level indicates the power level at which the modem is transmitting
when running V
.34 modulation. Possible values are 01–
64 dBm.
AsymRate Asymmetric Rate indicates the rate symmetry when running V.34 modulation.
Refer to the Asymmetric Rate configuration option in the Dial Line or Leased
Line section of Chapter 4.
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COMSPHERE 392xPlus Modems
Backup
The Status Backup function displays the configuration of the modem’s current operating line
facility and the configuration and condition of the inactive line.
To
access Backup from the Status branch, make the following selection:
NOTE
The modem’s rear panel has two line interface jacks: LEASE and
DIAL (see Figure 2-1 in Chapter 2). The jack labeled LEASE is the
APL primary interface and accepts either 2-wire or 4-wire APL. The
jack labeled DIAL is the backup interface and accepts either 2-wire
APL (Dual Lease Line) or Dial lines.
Press the
key until Backup appears.
Status:
DTE Backup
F1
F2
F3
Select Backup.
Status:Backup >
Line=Pri 4w APL
F1
F2
F3
The configuration of the current operating line facility (either APL primary or backup) appears
(Refer to Table 3-7).
Press the
key to display the next screen.
Status:Backup <
Bkup:2wAPL=Good
F1
F2
F3
This screen displays the configuration and condition of the inactive line facility (either APL
primary or backup).
Bad
, ????
, and
There are four condition codes, Good,
3-26 November 1996 3920-A2-GN31-30
‘ ’ (blank).
Page 64
DCP Operation
Table 3-7 provides information about the Status Backup screens. The first column lists all possible
configurations for the modem’
s currently active line. The second column lists all possible
configurations for the modem’s inactive lines. The third column provides information about the
inactive line condition.
XXXX represents the condition code of the inactive line.
Table 3-7
Backup Status Screens
Active Line
1st Screen Display
Line=Pri 4w APL
or
Line=Pri 2w APL
Line=Bkup 2w APL
or
Line = Dial Backup
Line=Dial Only No second screen
Line=No Sync No second screen
Inactive Line
2nd Screen Display
Bckup:2wAPL=XXXX
or
Bckup : Dial =(blank)
Pri 4w APL =XXXX
or
Pri 2w APL =XXXX
display.
display.
Possible Inactive/Backup Line Condition
Good indicates that line continuity is detected.
Bad indicates that line continuity is not detected.
???? indicates that the line condition is unknown (Backup
Facility Check is making its first
conditions since the last retrain).
blank indicates that the BackupLineCheck configuration
option is disabled or not available. Refer to the BackupLine
Check configuration option in the
Chapter 4.
Good indicates the line condition is good.
indicates the line condition is bad.
Bad
indicates the line condition is unknown (Lease
????
Lookback has not had enough time to make an initial
appraisal of the line conditions since the last retrain).
blank indicates the Lease Lookback option is disabled.
Refer to the BackupLine Check configuration option in the
Leased Line
NOTE: When the modem is configured for Dial Only, there
NOTE: The leased-line interface is disabled when the
NOTE: No Sync appears when the modem is not trained on
section of Chapter 4.
is no backup.
factory default options are loaded from the Async
Dial, Sync Dial, or UNIX Dial templates.
either the primary or backup line facility.
determination of the line
Leased Line
section of
To exit this function and remain in the Status branch, press the
key
Top-Level menu, press the
.
key
. To exit and return to the
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COMSPHERE 392xPlus Modems
Options
The Options Status function displays all optional firmware features currently installed in the
modem. If no firmware options are installed, None_Installed
T
o access Options from the Status branch, make the following sections:
appears on the LCD.
Status:
DTE Options
Record
F3
Press the
F1
F2
key until Options appears. Select Options.
Options:Status >
V.29 V.33
F1
F2
F3
If optional features are installed in the modem, they appear on the LCD’s bottom line. If other
features are installed, press the
To exit this function and remain in the Status branch, press the
Top-Level menu, press the
key to scroll other features into view.
key
.
key
. To exit and return to the
Record is a troubleshooting tool used in conjunction with support personnel. This function
retrieves and reports any sequence faults to support personnel. A sequence fault is an irregular or
unexpected event.
There are two selections under Record: Display and Clear
. Display allows up to eight sequence
fault messages that are recorded by the modem and displayed on the LCD in descending order. If
no sequence faults have occurred, then
Modem O.K.
appears.
Clear is used to remove all sequence fault messages from nonvolatile memory and the LCD.
T
o access Record from the Status branch, make the following selections:
Status:
Options Record
F1
Press the
3-28 November 1996 3920-A2-GN31-30
key until Record appears. Select Record.
F2
F3
Page 66
Record Status
Display Clear
DCP Operation
Service Log
F1
To
display sequence faults, select Display
F2
F3
.
Record Number 1
Modem O.K.
F1
F2
F3
The LCD displays the first sequence fault field. (Sequence fault fields range from 1 to 8 and are
identified by a number in the upper right corner.) Press the
The message
Modem O.K.
appears if no sequence faults have occurred.
To remove sequence fault records from both the LCD and nonvolatile memory
message
Modem O.K.
appears.
To exit this function and remain in the Status branch, press the
key
Top-Level menu, press the
.
key to view the remaining fields.
, select Clear
key
. To exit and return to the
. The
Service Log is a troubleshooting tool used in conjunction with support personnel. Use this function
to retrieve and report Service Log data to support personnel.
To access Service Log from the Status branch, make the following selections:
Status: <
Service_Log
F3
Press the
F1
F2
key until Service appears. Select Service Log.
Service Log: xx
Nxt mm/dd/yy zz
F1
F2
F3
Support personnel will request the applicable information from this screen.
xx displays the Service Log number.
mm/dd/yy displays the date (month/day/year).
zz displays the Customer Support code number.
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COMSPHERE 392xPlus Modems
Select Nxt to scroll through the entries in the Service Log.
To exit this function and remain in the Status branch, press the
Top-Level menu, press the
Configure Branch
The Configure branch of the LCD allows you to change and save the modem’s configuration
options. For configuration options and DCP configuration procedures, refer to Chapter 4,
DCP Configuration.
Poll List Branch
The Poll List function is not available in:
• Multipoint tributary modems.
• Modems with the Diag Connection configuration option disabled.
key
key
. To exit and return to the
.
Status Configure
• Modems using modulations that do not support the secondary channel.
• Point-to-point control modems.*
The Poll List (Plist) branch of the Top-Level menu allows you to identify downstream modems in
order to support health and status polling and download broadcasting. The maximum number of
devices is 32 on the secondary channel and 64 on the diagnostic channel.
“Status”
Control
PList
Display Clear Change Add Acquire
Active
Delete
Skip
Test SubHS Call_Setup Tlk/Data Security Remote
(Tributary
o
nly)
To access PList from the Top-Level menu, make the following selections:
* Point-to-point control modems only poll address 01, and point-to-point tributary modems are always set to address 01.
3-30 November 1996 3920-A2-GN31-30
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Leased:28.8
PList Control
DCP Operation
Display
F1
F2
F3
Press the key until PList appears. Select PList.
Within a network link, a control modem can communicate with a tributary modem by using the
tributary modem’s network management address for polling functions. Each TMp tributary modem
must have a different network management address. Refer to the Misc section in Chapter 4 for a
description of the network management address (NetMngmtAddress) configuration option.
Over a diagnostic channel a tributary modem can communicate with control modems by using the
control modem’s network management address for polling.
In the poll list, modems are listed as either Active or Skip. Downstream modems in the Active poll
list are polled by the modem. Modems in the Skip poll list are passed over during the polling
process, but not deleted from the poll list.
Display allows you to view the modem’
s poll list.
To access Display from the PList branch, make the following selection:
Poll List: >
Display Clear
F3
Select
Display
F1
F2
.
NOTE
If there are no modems in the poll list when you select Display, the
message Poll List Empty! appears on the second line of the LCD.
Poll List:Disp
Nxt xxx yyyyyy
F1
If
there are modems in the poll list when you select Display
xxx
Displays the network management address of the modem in the poll list.
F2
F3
,
yyyyyy Displays either Active or Skip to indicate the poll list in which the network
management address is included.
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COMSPHERE 392xPlus Modems
Select Nxt to scroll through the entries in the Active or Skip poll lists.
To exit this function and remain in the PList Display branch, press the
to the Top-Level menu, press the
Clear
The Clear function does not appear in Remote mode.
key
key
. To exit and return
.
Change
Clear deletes the modem’
s poll list.
To access Clear from the PList branch, make the following selection:
Poll List: >
Display Clear
F3
Select
Clear
The message
F1
F2
.
Command Complete appears on the second line of the LCD to indicate that the poll
list has been cleared.
To exit this function and remain in the PList branch, press the
key
Top-Level menu, press the
.
key
The Change function does not appear in Remote mode.
Change allows you to change the modem’
T
o access Change from the PList branch, make the following selections:
s poll list.
. To exit and return to the
Poll List:
Clear Change
F3
Press the
F1
F2
key until Change appears. Select Change.
Change allows you to add modems to the Active poll list (Active), delete modems from both
Active and Skip poll lists (Delete), and move modems from the Active to the Skip poll list.
Poll List:Chang >
Active Delete
F1
3-32 November 1996 3920-A2-GN31-30
F2
F3
Page 70
DCP Operation
To implement Change, select the appropriate function (Active, Delete, or Skip). (For Skip, you will
need to press the
key until Skip appears.)
Poll List:yyyyyy
Ent x
xx
Add
F1
F2
F3
The function field (yyyyyy) displays the function selected (Active, Delete, or Skip).
The address field (xxx) displays the network management address of the modem to be changed.
The valid address field range is from 001 to 256.
To increment digits within the address field (xxx), use the
and
keys to position the cursor
( _ ) under the digit to be incremented. Press the F2 () key to increment the digit.
Press Enter (Ent) to implement the function (yyyyyy) you selected (Active, Delete, or Skip). The
message
change occurred. If the message Poll List Check
Command Complete appears on the second line of the LCD to indicate that the poll list
appears, you attempted to delete an address that
is not on the poll list, or you attempted to add an address that is already on the poll list. If the
message
return to the selected function (Active, Delete, or Skip), press the
Poll Lst too Big appears, you exceeded the maximum number of downstream devices. To
key
. The address
automatically increments upon returning to this function.
To exit this function (Active, Delete, or Skip) and remain in the PList Change branch, press the
key. To exit and return to the Top-Level menu, press the
key
.
The Add function does not appear in Remote mode or on control modems.
Add allows you to add the tributary modem to a control modem’s poll list. This function should be
initiated from only one tributary modem at a time.
o access Add from the Plist branch, make the following selections:
T
Poll List:
Change Add
F1
F2
F3
Press the key until Add appears. Select Add.
Poll List:Add
Command Complete
F1
F2
F3
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COMSPHERE 392xPlus Modems
The
be added to the control modem’
message
Command Complete appears on the LCD to indicate that the tributary modem will
s poll list.
Acquire
To exit this function and remain in the PList branch, press the
key
Top-Level menu, press the
The Acquir
e function does not appear in Remote mode.
.
key
. To exit and return to the
Acquire allows you to acquire an active poll list consisting of all modems that are one tier
downstream. A modem adds to its poll list all downstream modems that respond to a poll.
To access Acquire from the Plist branch, make the following selections:
Poll List: <
Add Acquire
F1
F2
F3
Press the key until Acquire appears. Select Acquire.
NOTE
If an error message (OtherTestActive or Unable To Acquir)
appears on the second line of the LCD, move up one level in the
menu tree to clear the message and return to the PList Acquire
branch. The OtherTestActive message indicates that a test is
running which blocks the Acquire function. The Unable To Acquir
message indicates that the diagnostic network is in a busy state.
Poll List:Acquir
Abort xxx yyy
F1
F2
F3
The address field (xxx) is incremented sequentially from 001 to 256 as polls are transmitted from
the modem to the downstream modem(s). To be added to the modem’
s poll list, the device must
respond to a poll after receiving its address. The Acquire function can be canceled by selecting
Abort.
The number field (yyy) indicates the total number of devices that responded to the modem’
s polls
thus far. These devices have been acquired for the poll list.
Select Abort or allow the function to complete.
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Page 72
Poll List:Acquir
Num Acquired yyy
DCP Operation
The number field (yyy) indicates the total number of devices acquired for the poll list.
To exit this function and remain in the PList branch, press the
Top-Level menu, press the
Control Branch
The Control branch of the Top-Level menu allows you to manage hardware and software
functions, such as speaker volume, reset, busy out, and firmware download.
Status Configure PList
F1
F2
key
Test
Control
F3
key
. To exit and return to the
.
“Status”
SubHS Call_Setup Tlk/Data Security Remote
(3921
Plus
o
nly)
Speaker Reset
Data_Stream
EIA_LEDs
Make_Busy
or
RemoveMakeBusy
Service_Line
or
DiscServiceLine
Download_Code
(DownLoadSoftware)
To access Control from the Top-Level menu, make the following selections:
Leased:28.8
Control Test
F3
Press the
F1
F2
key until Control appears. Select Control.
VF_Thresh_Update
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COMSPHERE 392xPlus Modems
Speaker
Speaker allows you to make temporary adjustments to the modem’
s speaker volume. Upon a reset,
speaker volume returns to its configured setting. For more information on speaker settings, refer to
the
Misc
section in Chapter 4.
To access Speaker from the Control branch, make the following selection:
Control: >
Speaker Reset
F1
F2
F3
Select Speaker.
Speaker Control >
Off Low Med
F3
Press the
F1
F2
key and appropriate function keys to choose the desired selection.
DCP selections are
Off Turns the speaker off.
Low
Med
High
The message
Adjusts the speaker to low volume.
Adjusts the speaker to medium volume.
Adjusts the speaker to high volume.
Command Complete
appears on the LCD.
To exit Speaker and remain in the Control branch, press the
key
Top-Level menu, press the
.
key
. To exit and return to the
3-36 November 1996 3920-A2-GN31-30
Page 74
Reset
DCP Operation
Reset causes the modem to stop operation and perform a complete program restart. The
modem begins the power
-up test sequence that ends with the T
op-Level menu displayed on
the LCD. Configuration options stored in an Active (Saved) configuration area are copied to
the Active (Operating) configuration area.
o access Reset from the Control branch, make the following selection:
T
Control: >
Speaker Reset
Data Stream
F1
F2
F3
Select Reset.
The message
Reset appears momentarily before the modem performs the power
-up diagnostic test
sequence.
Use Data Stream to enable or disable the modem’s data transmitter function on a specific port or
on all ports.
The Data Stream function is not available in Async mode in Singleport mode.
To access Data Stream from the Control branch, make the following selections:
Control:
Data_Stream
F3
Press the
F1
F2
key until Data Stream appears. Select Data Stream (F1).
Select DS Port >
Port1 Port2
F1
If
the mux is enabled, press the
F2
F3
key to scroll the available ports into view
. Y
ou may see Port1,
Port2, Port3, Port4, or All. For information on selecting All, refer to Selecting All Ports later in this
section.
To select a port, press the appropriate function key (F1 or F3).
This screen does not appear if in Singleport mode or the DTE Bridge configuration option is
enabled.
Now go to the next screen (Data Stream).
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COMSPHERE 392xPlus Modems
Data Stream
Port1 Disable
F1
F2
F3
The port field (for example, Port1) displays the selected port.
The available Data Stream action (Disable or Enable) appears on the second line of the LCD
beside the port field. If the modem’s data transmitter is enabled, the word Disable
appears to
indicate that you may disable the data transmitter by selecting this action.
To change the modem’
appears, press the
s data stream, press the F2 key
key to clear the message.
. When the message
Command Complete
Data Stream
Port1 Enable
F1
To
change the data stream for the selected port again, press the F2 key
F2
F3
.
or
key
To exit this function and remain in the Control branch, press the
key
Top-Level menu, press the
.
. To exit and return to the
Selecting All Ports
Selecting All will enable or disable the modem’s data transmitter function on all ports.
Select DS Port >
Port1 All
F1
From
the Select DS Port screen, press the F3 key to select All.
F2
F3
Data Stream All
Enable Disable
F1
F2
F3
To enable or disable the modem’s data transmitter function on all ports, press the appropriate
function key, F1 (Enable) or F3 (Disable). When the message Command Complete
the
key to clear the message.
appears, press
3-38 November 1996 3920-A2-GN31-30
Page 76
Select DS Port >
All
DCP Operation
EIA LEDs
F1
To
change the data stream on all ports again, press the F1 key
F2
F3
.
or
key
To exit this function and remain in the Control branch, press the
Top-Level menu, press the
key
.
. To exit and return to the
This function allows the front panel EIA LEDs to display and change the activity of a selected
digital interface. Use the EIA LEDs function to change the port that controls the front panel LED.
Based on the modem’
s configuration, the following conditions exist:
• The CC or DC selection is not available if the Diagnostic Connector configuration option is
Misc
disabled. Refer to the Diag Connection configuration option in the
section of
Chapter 4.
• The CC or DC interface is not available on the 3921Plus
modem. The CC or DC activity is
monitored on the SDU in the 3000 Series carrier.
• Ports 3 or 4 are not available in the DTE Bridge mode.
• Ports 2, 3, and 4 are available in TDM/MSD mode.
To access EIA LEDs from the Control branch, make the following selections:
Control:
EIA_LEDs
F3
Press the
F1
F2
key until EIA LEDs appears. Select EIA LEDs.
EIA LEDs:xxxxx >
Port1 Port2
F1
F2
F3
The port field (xxxxx) displays the currently selected interface. Valid interface selections are Port1,
Port2, Port3, Port4, and depending on the set value of the Diagnostic Connection configuration
option, CC (NMS Control Channel), or DC (Diagnostic Channel). Refer to Diag Connection
Misc
configuration option in the
section of Chapter 4.
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COMSPHERE 392xPlus Modems
Press the F1 key until the appropriate digital interface appears. Select the appropriate interface by
pressing the corresponding function key.
After selecting the desired interface, the message
of the LCD and the selected interface appears in the xxxxx field.
The Port 1 interface is the only display allowed on the 3921
modem in Singleport mode, therefore the entire EIA LEDs branch is
masked.
Make Busy/Remove Make Busy
The Make Busy function forces the modem of
with PBX systems to permit the busy out of a PBX port for rotary or hunt groups.
To prevent violations of FCC and DOC regulations, this
function must only be used behind a user’
To
access Make Busy from the Control branch, make the following selections:
Command Complete appears on the bottom line
NOTE
Plus
f-hook so it cannot answer a call. This is often used
WARNING
s PBX.
Control:
Make_Busy
F3
.
Press the
F1
F2
key until Make Busy appears. Select Make Busy
Make Busy
Command Complete
F1
F2
F3
The modem is now in a forced busy condition. Command Complete
T
o remove the modem from Make Busy mode, press the
RemoveMakeBusy
appears.
key once and the
appears on the LCD.
key until
3-40 November 1996 3920-A2-GN31-30
Page 78
Control:
RemoveMakeBusy
DCP Operation
F1
Press
any function key to select RemoveMakeBusy. The message
on the LCD.
Service Line/Disconnect Service Line
The Service Line/Disconnect Service Line is only available in Models 3921-B1-001 and
3021-B1-011.
The Service Line function allows you to switch a specific Model 3921Plus
COMSPHERE 3000 Series Carrier from normal leased or dial operation to service-line operation.
This switch only places the modem on the service line. For a connection to be established, you
must still use the normal dialing methods as described earlier in this chapter in the
Branch
section.
A service line is an extra dial line connected to a COMSPHERE 3000 Series Carrier
normally shared by up to four Model 3921Plus multiport or eight singleport modems installed in
either Slots 1–8 or Slots 9–16. However, by daisy chaining the service-line connector of one
Network Interface Module (NIM) to the service line of another NIM installed in the same carrier,
you can permit eight multiport or sixteen singleport modems to share one service line. The service
line can also be extended to other carriers in a cabinet. For more information on daisy chaining
NIMs to the service line, refer to the
A service line is ideal for a dial backup of Model 3921Plus
Remember that a service line can back up only one failed leased line at a time.
F2
F3
Command Complete
COMSPHERE 3000 Series Carrier
modems operating on leased lines.
appears
installed in a
Call Setup
. This line is
, Installation Manual.
To enable service line from the Control branch, make the following selections:
Press the
key until Service Line appears.
Control:
Service_Line
F1
F2
F3
Press F1 (Service_Line) to switch the modem from its normal dial line to the service line.
Service_Line
Command Complete
F3
appears. Now, when the modem places a call, instead of using
The
message
F1
F2
Command Complete
the dial, the call is placed on the service line.
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COMSPHERE 392xPlus Modems
Download Software
To disconnect the modem from the service line and resume normal operation, press the
key
(returning to Control branch). From the Control branch, press the key until DiscServiceLine
appears.
Control:
DiscServiceLine
F1
F2
Press F1 (DiscServiceLine). The call and service line disconnect and the message
Complete
appears.
F3
Command
The Download Software function sets parameters within the modem when transferring firmware
to one or more modems or when receiving firmware upgrades from a locally attached PC-based
controller. The latter is only performed by service representatives.
There are two selections under Download Software: Clone Remote and To Local via DTE. Clone
Remote is used to transfer an exact copy of the firmware currently stored in a 392xPlus modem to
either one or more remote 392xPlus modems or one or more DC-attached 392xPlus
modems.
When implementing a Clone Remote operation, the following is true:
• The Clone Remote function only operates properly if the remote modems are connected to
• The Clone Remote will not appear on the LCD if the modem is not configured for leased
For more information on Clone Remote operation, refer to Implementing a Clone Remote
Operation
The second selection appearing on the LCD is T
upgrades to be transferred to a 392xPlus modem. This type of download requires a locally attached
PC controller to be connected to the modem’
downloads using this selection are intended to be performed by service representatives only.
Selecting Clone Remote
the local modem via a leased-line or an established dial-line network.
lines and a dial-line connection does not exist.
later in this section.
o Local via DTE. This function permits firmware
s DTE port as well as special download software.
NOTE
Clone Remote operations are not supported unless both local and
remote modems are 392x
modems cannot be used in cloning operations with 392x
Plus
modems. (The 3800 or 391x Series
Plus
modems.)
Any
To access DwnLoadSoftware from the Control branch, make the following selections:
3-42 November 1996 3920-A2-GN31-30
Page 80
Control:
Download_Code
DCP Operation
Press the
F1
key until Download_Code appears. Press any function key to select
F2
Download_Code. The DwnLoadSoftware screen appears.
DwnLoadSoftware >
Clone_Remote
F1
F2
Press any function key to select Clone_Remote.
The next screen to appear is determined by the modem’s configuration. Refer to the appropriate
section based on your modem’s configuration; Clone Remote in Point-to-Point Configurations,
Clone Remote in Br
oadcast Configuration
Clone Remote in Point-to-Point Configurations
Before using Clone Remote in point-to-point configurations, verify the following:
• The 392xPlus
V.33, V.32 family, or V.29 modulation (refer to the
dial network connection using either V.34 family or V.32 family modulations (refer to the
Dial Line section in Chapter 4).
modems have an established leased-line connection using either V
F3
F3
s, or Clone Remote in Multipoint Configuration.
Leased Line
section in Chapter 4) or a
.34 family,
• The remote modem’s Access From Remote configuration option is enabled (refer to the
Misc section in Chapter 4).
The password (Remote Access Password configuration option) is the same in both the local
•
and remote modems. (For an example of how to change the password, refer to the Editing
and Saving a Configuration Option section in Chapter 4.)
After completing these checks, proceed to the section titled
Operation, which follows the descriptions of multipoint cloning operations.
Clone Remote in Broadcast Configurations
A tributary modem configured for extended diagnostics (Diagnostic Connection configuration
option set to Modem(DC)) can perform two types of Remote Clone operations. It can clone the
upstream, VF connected, control modem (SC_Clone) or it can clone all the 392xPlus
attached to its downstream Diagnostic Channel (DC_Broadcast).
Choose DLL Type >
SC_Clone
F1
F2
Implementing a Clone Remote
modems
F3
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COMSPHERE 392xPlus Modems
From the Choose DLL T
an exact copy of the tributary modem’s firmware to the VF connected control modem.
Proceed to the section titled Implementing a Clone Remote Operation, which follows the
descriptions of multipoint cloning operations.
Cloning DC Broadcast Remote
Before using Clone Remote in DC Broadcast configurations, make sure the tributary modem’s
active poll list contains all the network management addresses for the control modems that receive
the download (refer to the Poll List Branch section in this chapter), and ensure that the control
modems are responding properly to polls (refer to the
section in this chapter).
From the Choose DLL T
to transfer an exact copy of the tributary modem’s firmware to the DC-connected control
modem(s) using the Active Poll list.
ype screen, press the F1 key to select SC_Clone to request the transfer of
Choose DLL Type >
DC_Broadcast
F1
F2
F3
ype screen, press the
Sub-Network Health and Status
branch
key until DC_Broadcast appears. Press F1 or F2
Proceed to the section titled Implementing a Clone Remote Operation, which follows the
descriptions of multipoint cloning operations.
Viewing DC Broadcast Clone Results
Choose DLL Type >
DC_CloneResults
From the Choose DLL T
results of the last DC_Broadcast clone operation. If the message
indicates that a multiple download was never initiated.
DC Clone Results
Nxt xxx Pass
The address field (xxx) displays the network management address of one of the remote modems.
Pressing the F1 key allows you to select various remote modems to determine the download result
for those modems (Pass or Fail).
F1
F2
ype screen, press the
F1
F2
F3
F3
key until DC_CloneResults appears to view the
Trib List Empty
appears, this
3-44 November 1996 3920-A2-GN31-30
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Clone Remote in Multipoint Configurations
A Trellis Multipoint (TMp) control modem can be used to download firmware to just one tributary
modem (Single) or to all of its tributary modems (Multiple).
A Trellis Multipoint (TMp) tributary modem cannot download
firmware to its control modem. To download firmware to a TMp
control modem use a point-to-point dial connection, an NMS, or a
PC controller.
Before using Clone Remote in multipoint configurations (Single or Multiple), perform the
following:
DCP Operation
NOTE
Make sure the 392x
•
Trellis Multipoint (TMp) modulation (refer to the
Plus
modems have an established leased-line connection using the
Leased Line
section in Chapter 4).
• Make sure the remote modem’s Access From Remote configuration option is enabled (refer
to the Misc section in Chapter 4).
• For Single
download configurations, know the remote access password and the network
management address of the remote tributary modem that will receive the download. Refer to
the Misc
section in Chapter 4 for a description of the remote access password
(RemAccssPasswrd) configuration option and the network management address
(NetMngmtAddress) configuration option.
• For Multiple download configurations, ensure that:
— the tributaries are responding properly to polls (this may take several minutes after the
control modem powers up). Refer to the
Sub-Network Health and Status Branch
section
in this chapter for more information.
— the control modem’
s active poll list contains all the network management addresses for
the remote 392xPlus tributary modems that will receive the download (refer to the Poll
List Branch
section in this chapter).
— all 391x modems are removed from the active poll list.
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COMSPHERE 392xPlus Modems
Cloning a Single TMp Remote
Choose DLL Type >
Single Multiple
F1
Press
the F1 key to select Single Clone Remote.
F2
F3
Choose Address:
Ent x
F1
xx
F2
F3
The address field (xxx) displays the network management address of the modem that receives the
download. The valid address field range is from 001 to 256.
To increment digits within the address field (xxx), use the
and
keys to position the cursor
( _ ) under the digit to be incremented. Press the F2 () key to increment the digit.
Press F1 (Ent) to select the modem that will receive the download.
Choose Password:
Ent y
F1
yyyyyyy
F2
F3
The password field (yyyyyyyy) displays the remote access password for the modem that will
receive the download.
To increment digits within the password field (yyyyyyyy), use the
and
keys to position the
cursor ( _ ) under the digit to be incremented. Press the F2 ( ) key to increment the digit.
Press Enter (Ent) to select the modem that will receive the download.
After completing these actions, proceed to the section titled Implementing a Clone Remote
Operation.
3-46 November 1996 3920-A2-GN31-30
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Cloning a Multiple TMp Remote
DCP Operation
Choose DLL Type >
Single Multiple
Press
the F3 key to select Multiple Clone Remote.
After completing this action, proceed to the next section titled Implementing a Clone Remote
Operation.
Viewing Multiple TMp Clone Results
From the Choose DLL T
view the results of the last multiple TMp clone operation. If the message Trib List Empty
this indicates that a multiple download was never initiated.
F1
F2
F3
Choose DLL Type >
MPtCloneResults
F1
F2
F3
ype screen, press the
MPtCloneResults
Nxt xxx Pass
key until the MPtCloneResults screen appears to
appears,
F1
F2
F3
The address field (xxx) displays the network management address of one of the remote modems.
Pressing the F1 key allows you to select various remote modems to determine the download result
for those modems (Pass or Fail).
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COMSPHERE 392xPlus Modems
Implementing a Clone Remote Operation
The modem begins a transfer of its own program to the remote
modem. This process takes the communication link
out-of-service for a period of time depending on the data rate
of the link. If the Clone Remote process is started and then
interrupted, the remote modem is left in a partially programmed
state in which its functional capabilities are limited to those
required to initiate and complete another download attempt. If
the mux is enabled when the Clone Remote process is
interrupted, disable the mux on the source modem before you
initiate another Clone Remote process. (Be sure to re-enable
the mux when cloning is complete.)
Warning:Download
Abort_Download
WARNING
F1
F2
F3
At this point, if you do not want to continue this process, abort the transfer by selecting any
function key. This returns the modem to the DwnLoadSoftware menu. However, to continue with
the transfer
, press the
key to display the Reprogram_Remote selection.
Warning:Download
Reprogram_Remote
F1
F2
F3
Press any function key to begin the transfer.
RemClone Status
Establish Remote
F3
The local modem’
F1
F2
s LCD displays Establish Remote, indicating the modem is attempting to
establish a Remote Cloning Download session with the remote modem.
3-48 November 1996 3920-A2-GN31-30
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DCP Operation
If
unsuccessful, the modem remains in the Download T
RemClone Failed
and the bottom line displays one of the following messages:
ransfer mode. The LCD’
s top line displays
Incompat Modulat The modems are connected, but are using a modulation scheme other
than V
.34 family
, V
.33, V.32 family
, V
.29, or TMp.
No Response
Access Disabled
Password Invalid
The remote modem is not a 3900 Series modem or the connection
between the two modems is poor
The remote modem’
s Access from Remote configuration is disabled.
.
The local and remote modems’ passwords do not match. Correct the
problem and attempt another download from the local modem. If this
fails, contact your service representative.
No Cir
cuit There is no connection between the local and remote modem.
After successful establishment of a Remote Cloning Download session, the following screens
appear.
RemClone Status
Initializing
F1
F2
F3
RemClone Status
Bank1:xxxx/yyyy
F1
F2
As the firmware transfers, the local and remote LCD’
F3
s bottom line displays the status of the
download process, plus the number of records sent versus the total number of records for that data
bank number.
For Single
Remote Clone OK
download applications, if the download is successful, the local modem displays
and the remote modem displays
Frmware Upgrade. If the download took
place over the dial network, the modems disconnect when the download is complete.
If the Single
download is unsuccessful,
RemClone Failed appears on the LCD’s top line. Attempt
another download from the local modem. If this fails, contact your service representative.
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COMSPHERE 392xPlus Modems
Automatic Firmware Download
New
releases may be available for the 392x
available at no charge from the Automatic Firmware Download Center. Refer to page A in the
front of this document for contact information.
To download the firmware, your modem must be configured for dialing. Save your modem’s
current configuration to the Customer 1 or Customer 2 memory area, and load the Async Dial
factory template (refer to Chapter 4,
changing configuration options).
If you have a DTE (terminal or PC) attached to your modem, informational messages appear on it
when the modem connects. These messages show the amount of time the download will take.
However, a DTE is not required.
The firmware download begins without any operator action. When the firmware download begins,
the LCD displays download status messages with the data bank number
loaded, and the total number of blocks.
Download Status
Bank1: xxxx/yyyy
Plus
modems. The latest 392
DCP Configuration
xPlus firmware is
, for more information about saving and
, current block being
F1
If
the modem connects at 14,400 bps, the download takes about 10 minutes. When the download
completes, the modem resets itself and displays a normal status message (such as
Reload your saved configuration options from the Customer 1 or Customer 2 memory area.
Automatic Firmware Download Failure
If the firmware download is interrupted, the following screen appears.
DownldOnly Mode
Configure
F1
This indicates that your modem is left in a state that can only be used to make or receive a call for
download. To continue the firmware download, repeat the download process by directing the
modem to dial the Automatic Firmware Download Center (refer to the
in this chapter for information about dialing a number using the DCP). If you are unable to
complete the download, contact your service representative for assistance.
F2
F2
F3
F3
Idle:28.8).
Call Setup Branch
section
3-50 November 1996 3920-A2-GN31-30
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VF Thresholds Update
The VF Thresholds Update function allows you to set the thresholds that determine the Health and
Status alarm conditions for the VF parameters. Refer to Table 3-8 in this section for VF
thresholds and their valid ranges and default values.
To access VF_Thresh_Update from the Control branch, make the following selections:
DCP Operation
Control: <
VF_Thresh_Update
F3
Press the
F1
F2
key until VF_Thresh_Update appears. Press any function key to select
VF_Thresh_Update.
VF Thresholds
Edit Save Reset
F1
F2
F3
Select Edit.
In the following example, the RSL High threshold is changed from 09 (–dBm) to 10. This example
demonstrates VF threshold editing and saving. W
thresholds may be modified in this manner
values of
Excelent (Excellent), Good, Fair, Poor, or
ith the exception of Signal Quality, all VF
. Signal Quality uses a menu selection with possible
No Signal
. Editing and saving a VF threshold
is similar to editing and saving a configuration option. (For another example of editing and saving,
refer to the Editing and Saving a Configuration Option section in Chapter 4.)
RSL High (-dBm)
Nxt 0
9
F1
F2
F3
In the example shown above, 09 is the upper (High) RSL threshold (in –dBm). T
09 to 10, make the following selections:
RSL High (-dBm)
r
F2
9
F3
Nxt 1
F1
Select the F2 ( ) key to increment the number above the cursor ( 0 ) to 1.
o change the
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COMSPHERE 392xPlus Modems
NOTE
Note that a warning ( ) appears on the second line of the screen if
you enter an invalid VF threshold (out of range). You cannot save
r
your edits until all thresholds are within their valid range. Refer to
Table 3-8 for valid VF threshold ranges.
RSL High (-dBm)
F2
r
F3
Press the
Nxt 19
F1
key to move the cursor to the next position ( 9 ).
Select the F2 ( ) key to change the number above the cursor ( 9 ) to 0.
RSL High (-dBm)
Nxt 10
F1
F2
F3
NOTE
If you want to modify additional VF thresholds, select Nxt.
To
save the edited threshold(s):
RSL High (-dBm)
Nxt 10
F1
F2
F3
Press the key to scroll up to the Edit/Save screen.
VF Thresholds
Edit Save Reset
F3
Select
Save.
F1
F2
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DCP Operation
If the edited VF thresholds are valid, the Save command stores them into nonvolatile memory.
When the Save completes, the message
Save Completed
appears.
Save VF Thresh
Thd Out of Range
F1
F2
If the edited VF threshold is invalid (out of range), the error message Thd Out of Range
F3
appears.
This indicates the Save procedure was unsuccessful. Return to the Edit screen and correct the
invalid threshold range.
To correct the invalid VF threshold, press the
key to return to the VF Threshold
Edit/Save/Reset screen.
VF Thresholds
Edit Save Reset
F1
F2
F3
Select Reset to restore the original default values into memory.
Repeat the Edit and Save procedure until the VF threshold(s) is valid and the Save completes
successfully (
To exit this function and remain in the Control branch, press the
Top-Level menu, press the
Save Completed).
key
key
. To exit and return to the
.
Health and Status VF alarms are reported to the front panel LED and the Network Management
System (NMS) based on the parameters in Table 3-8. Refer to Table 3-6 in the
Device Health and
Status section of this chapter for Health and Status VF message alarm information.
Table 3-8
(1 of 2)
Valid Ranges for VF Thresholds
VF Thresholds
Receive Signal Level High 0 dBm to –15 dBm Above –9 dBm
Receive Signal Level Low –16 dBm to –50 dBm Below –23 dBm
Signal to Noise Ratio 5 dB to 40 dB Below 23 dB
Non-Linear Distortion 15 dB to 50 dB Below 30 dB
Retrains (per 15 minutes) 1 to 255 trains 15 trains
Signal Quality Excellent (lowest)
Good
Fair
Poor
No Signal (highest)
Near Echo
0āć38 dBm
Valid Ranges Default Values
Good
Above –20 dBm
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COMSPHERE 392xPlus Modems
VF Thresholds Default ValuesValid Ranges
Far Echo 0–38 dBm Above –20 dBm
Frequency Offset 1 Hz to 15 Hz Above 4 Hz
Phase Jitter 1 degree to 45 degrees Above 9 degrees
Phase Hits 1 to 255 hits 20 hits per 15 minutes
Impulse Hits 1 to 255 hits 20 hits per 15 minutes
Gain Hits 1 to 255 hits 20 hits per 15 minutes
Drop Outs 1 to 255 dropouts 20 dropouts per 15 minutes
Test Branch
Table 3-8
(2 of 2)
Valid Ranges for VF Thresholds
The Test branch of the T
if you are having data communication problems, such as periodic character loss, random errors, or
constant format errors. By the process of elimination, you can usually isolate the fault in your
system.
There are six selections under Test: Abort, Self (Self-Test), Loc Analog Loop (Local Analog
Loopback), Rem Digital Loop (Remote Digital Loopback), Loc Digital Loop (Local Digital
Loopback), and Pattern. The only tests that can operate concurrently on a single modem are Pattern
with a Local Analog Loopback and Pattern with a Remote Digital Loopback. If any test is
operating, besides the two combinations just mentioned, it must be canceled before starting another
test.
est branch only initiates and cancels tests. If parameters need to be set, refer to the
The T
section in Chapter 4.
Status Configure PList Control
op-Level menu allows you to initiate various modem tests. Use these tests
Tests
“Status”
SubHS
Call_Setup Tlk/Data Security Remote
Test
Abort Self Loc_Analog_Loop Rem_Digital_Loop Loc_Digital_Loop Pattern
Port
Select
3-54 November 1996 3920-A2-GN31-30
Port
Select
Port
Select
Page 92
To
access the T
DCP Operation
est branch from the Top-Level menu, make the following selections:
Leased:28.8
Control Test
Abort
F3
est.
Press the
F1
key until T
F2
est appears. Select T
Abort ends any test that is in progress and brings the modem back to the normal mode of
operation. Confirmation is provided by the Command Complete
message.
To access Abort from the Test branch, make the following selection:
Test: >
Abort Self
F1
F2
F3
Select Abort.
Test:Abort
Command Complete
F1
F2
F3
The modem stops all tests currently in progress and displays the
message on the LCD.
To exit this function and remain in the T
Top-Level menu, press the
key
est branch, press the
.
Command Complete
key
. To exit and return to the
status
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COMSPHERE 392xPlus Modems
Self
Self performs an internal self-test of the modem, which takes less than a minute to complete. The
modem must be offline; otherwise, Invalid Command
To access Self from the Test branch, make the following selection:
appears.
WARNING
When this test is run in Remote mode, it causes the Remote
mode session to be lost. The Remote mode session will
reestablish after the self-test completes (usually one or two
minutes). If the remote self-test fails, a Device Failure alarm
message appears when the remote modem’s Device Health and
Status (DeviceHS) branch is accessed.
Test: >
Abort Self
F1
F2
F3
Select Self. (All LCD cells and DCP status indicators light.)
NOTE
The test delays 15 to 30 seconds to allow any outstanding network
management messages to propagate before the VF channel is
interrupted by the test.
If
the modem passes the self-test,
modem fails, contact your service representative. If Invalid Command
operating on dial lines. If OtherTestActive
Pass appears on the LCD. If it fails, Failed appears. If the
appears, the modem is
appears, another test is in progress. If another test is in
progress, select Abort to clear the current test and try again. If the modem is operating on dial
lines, disconnect to clear the dial lines, and then choose Self. If the modem receives a ring signal
during this test, the test is canceled and
To exit this function and remain in the T
Top-Level menu, press the
key
RI Abort
message appears.
est branch, press the
.
key
. To exit and return to the
3-56 November 1996 3920-A2-GN31-30
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Loc Analog Loop
DCP Operation
This test is not available when using V.34 modulation in Multiport mode.
Loc Analog Loop performs a local analog loopback (CCITT V.54 Loop 3), Figure 3-4, that verifies
modem operation as well as the connection between the DTE and modem. The modem must be
offline and in Synchronous or Asynchronous Direct mode to perform this test, otherwise Invalid
Command appears.
NOTE
If you are performing a Local Analog Loop test on a TMp modulation
that is running a test pattern with a constant flow of data, you must
toggle the RTS switch off and then on to allow the modem to train
up.
Figure 3-4. Local Analog Loopback
To access Loc Analog Loop from the T
Test:
Loc_Analog_Loop
F3
Press the
F1
F2
key until Loc Analog Loop appears. Press any function key to start this test.
Test:Local Loop
Started
F1
F2
F3
est branch, make the following selections:
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COMSPHERE 392xPlus Modems
The
OtherTestActive appears on the LCD, another test is in progress. Select Abort to clear the current
test and try again. If the Test Timeout configuration option is enabled, T
conclusion of the test. If it is disabled, the test operates until aborted. For more information on the
Test Timeout configuration option, refer to the Test section in Chapter 4. A Ring Indicate during
this test can cause errors.
The test delays 15 to 30 seconds to allow any outstanding network
management messages to propagate before the VF channel is
interrupted by the test.
message
NOTE
Started appears on the LCD, and the Test LED lights for the duration of the test. If
est T
imeout
appears at the
Rem Digital Loop
To exit this function and remain in the T
Top-Level menu, press the
key
est branch, press the
.
key
. To exit and return to the
This test is not available when:
• Using TMp modulation.
• Using Remote mode.
• V.54 configuration option is enabled.
•
Using V
.34 modulation with the Aysmmetric Rate configuration option enabled.
Rem Digital Loop performs a remote digital loopback (CCITT V.54 Loop 2), Figure 3-5. This test
can verify the integrity of the local modem, the communication link, and the remote modem. Any
data or pattern entered at the local DTE is sent to and returned from the remote modem. For this
test to operate properly, the modems must be operating at the same rate and in Synchronous or
Asynchronous Direct mode.
Figure 3-5. Remote Digital Loopback
3-58 November 1996 3920-A2-GN31-30
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DCP Operation
To access Rem_Digital_Loop from the T
est branch, make the following selections:
Test:
Rem_Digital_Loop
F3
Press the
F1
F2
key until Rem_Digital_Loop appears. Press any function key to start this test.
Pick Test Port >
Port1 Port2
F1
F2
F3
Select the appropriate port by pressing the corresponding function key
other ports into view.
This screen does not appear in Singleport mode.
Test:P1:Rem Loop
Started
. Press the
key to scroll
F3
The
message
F1
F2
Started appears on the LCD, and the Test LED lights.
If OtherTestActive appears on the LCD, another test is in progress. Select Abort to clear the
est T
current test and try again. If the Test Timeout configuration option is enabled, T
imeout
appears at the conclusion of the test. If it is disabled, the test operates until aborted. For more
information on the Test Timeout configuration option, refer to the Test
To exit this function and remain in the T
Top-Level menu, press the
key
est branch, press the
.
section in Chapter 4.
key
. To exit and return to the
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COMSPHERE 392xPlus Modems
Loc Digital Loop
Loc Digital Loop is issued by a local modem and forces it to loopback any data received from the
remote modem (Figure 3-6 ). (This test operates the same as a CCITT V.54 Loop 2 except it is
issued at your modem.) This is useful if a remote modem is incapable of initiating a remote digital
loopback from its location. For this test to operate properly, the modems must be operating at
the same rate and in Synchronous or Asynchronous Direct mode.
NOTE
A TMp tributary cannot perform a local digital loopback test.
Figure 3-6. Local Digital Loopback
To access Loc_Digital_Loop from the T
est branch, make the following selections:
Test:
Loc_Digital_Loop
F3
Press the
F1
F2
key until Loc_Digital_Loop appears. Press any function key to start this test.
Pick Test Port >
Port1 Port2
F1
F2
F3
If the mux is enabled, select the appropriate port by pressing the corresponding function key
the key to scroll other ports into view.
. Press
3-60 November 1996 3920-A2-GN31-30
Page 98
This screen does not appear in Singleport mode.
Test:P1:Dig Loop
Started
DCP Operation
Pattern
F3
The
message
F1
F2
Started appears on the LCD and the Test LED lights. The port field (for example, P1
for Port 1) displays the port that is currently selected. You may see P1, P2, P3, or P4.
If OtherTestActive appears on the LCD, another test is in progress. Select Abort to clear the
est T
current test and try again. If the Test Timeout configuration option is enabled, T
appears at the conclusion of the display
information on the Test Timeout configuration option, refer to the Test
To exit this function and remain in the T
Top-Level menu, press the
key
. If it is disabled, the test operates until aborted. For more
section in Chapter 4.
est branch, press the
key
. To exit and return to the
.
imeout
Pattern can transmit and receive a 511 bit error rate test pattern. It can also be used with a currently
running local analog loopback or a remote digital loopback to simulate data passing through the
modem. You will need to start the local analog or remote digital loopback test before you start the
pattern test. For this test to operate properly, the modems must be online and in Synchronous or
Asynchronous Direct mode. Otherwise, the message
Invalid Command
appears when this test is
started (Figures 3-7 through 3-9).
Figure 3-7. Pattern Test and Local Analog Loopback Test
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COMSPHERE 392xPlus Modems
Figure 3-8. Pattern Test and Digital Loopback Test
Figure 3-9. End-to-End Pattern Test
To access Pattern from the T
Test: <
Pattern
F1
Press the
key until Pattern appears. Select Pattern to start this test.
est branch, make the following selections:
F2
F3
3-62 November 1996 3920-A2-GN31-30
Page 100
Pick Test Port >
Port1 Port2
DCP Operation
F1
F2
Select the appropriate port by pressing the corresponding F key
F3
. Press the
key to scroll other
ports into view.
The Pick Test Port screen does not appear in Singleport mode.
Test:P1:Pattern
Started
F3
The message
F1
F2
Started appears on the LCD and the Test LED lights.
The port field (for example, P1 for Port 1) displays the port that is currently selected. Y
P1, P2, P3, or P4.
Test P1:Pattern >
BlksErrd=xxxxxxx
F1
F2
F3
ou may see
BlksErrd=xxxxxxx displays the number of blocks of data found in error (block size is 1000 bits
per block). BlksRcvd=xxxxxxx displays the total number of blocks of data received. Select Clear
to reset both block counters. In Singleport mode the message NoSync can appear as a value for
BlksErrd while the modem’
s receiver is synchronizing. The message
OvrFlw
can appear as the
value for BlksErrd if the counter overflows.
Press the
Press the
key to display
key to display
BlksRcvd=xxxxxxx, number of blocks of data received.
Clear. Select Clear
to reset the block counters.
The Pattern test can be exited and reentered without restarting the test. The BlksErrd and BlksRcvd
continue counting.
est T
imeout
If the Test Timeout configuration option is enabled, T
appears at the conclusion of the
test. If it is disabled, the test operates until aborted. For more information on the Test Timeout
configuration option, refer to the Test
To exit this function and remain in the T
Top-Level menu, press the
section in Chapter 4.
est branch, press the
key
.
key
. To exit and return to the
3-633920-A2-GN31-30 November 1996
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