Paradyne 3600, 3611 User Manual
COMSPHERE
3600 SERIES
DATA SERVICE UNITS
MODELS 3610 AND 3611
TIME DIVISION MULTIPLEXER,
MULTICHANNEL MULTIPOINT, AND
DIGITAL BRIDGE OPTIONS
APPLICATIONS GUIDE
Document No. 3610-A2-GB41-60
March 1999
COMSPHERE 3600 Series Data Service Units
COMSPHERE 3600 Series Data Service Units
Models 3610 and 3611
Time Division Multiplexer, Multichannel Multipoint, and Digital Bridge Options
Applications Guide
3610-A2-GB41-60
7th Edition (March 1999)
Changes and enhancements to the product and to the information herein will be documented and issued as a new release to this manual.
Warranty, Sales, Service, and Training Information
Contact your local sales representative, service representative, or distributor directly for any help needed. For additional information
concerning warranty, sales, service, repair, installation, documentation, training, distributor locations, or Paradyne worldwide office
locations, use one of the following methods:
• Internet: Visit the Paradyne World Wide Web site at www.paradyne.com. (Be sure to register your warranty there. Select
Service & Support → Warranty Registration.)
• Telephone: Call our automated system to receive current information by fax or to speak with a company representative.
— Within the U.S.A., call 1-800-870-2221
— Outside the U.S.A., call 1-727-530-2340
Document Feedback
We welcome your comments and suggestions about this document. Please mail them to Technical Publications, Paradyne Corporation,
8545 126th Ave. N., Largo, FL 33773, or send e-mail to userdoc@paradyne.com. Include the number and title of this document in
your correspondence. Please include your name and phone number if you are willing to provide additional clarification.
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 1999 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 March 1999 3610-A2-GB41-60
!
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 3-wire grounding type plug — a plug which
has a grounding pin. This is a safety feature. Equipment grounding is vital to ensure
safe operation. Do not defeat the purpose of the grounding type plug by modifying
the plug or using an adaptor.
Prior to installation, use an outlet tester or a voltmeter to check the ac receptacle for
the presence of earth ground. If the receptacle is not properly grounded, the
installation must not continue until a qualified electrician has corrected the problem.
If a 3-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.
B3610-A2-GB41-60 March 1999
COMSPHERE 3600 Series Data Service Units
Notices
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C March 1999 3610-A2-GB41-60
Table of Contents
Preface
About this Guide vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How to Use this Guide vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Related Documents viii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reference Documents viii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1. Overview
Overview 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standard Features 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Optional Features 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Models 1-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DBM T ypes 1-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Government Requirements 1-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Warranty and Support 1-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2. Model 3610 Installation
Overview 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hardware Straps 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing Hardware Settings 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Connection 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Network Diagnostic Connection 2-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Software Configuration 2-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Network and LADS Connections 2-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DSU DTE Connection 2-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Verification Testing 2-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adding a TDM/Flex or MCMP/Flex to an Installed Model 3610
DSU 2-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Getting Started 2-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the DSU from Its Base 2-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing a TDM/Flex or MCMP/Flex 2-15. . . . . . . . . . . . . . . . . . . . . . . . .
Reassembling the Unit 2-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
i3610-A2-GB41-60 March 1999
COMSPHERE 3600 Series Data Service Units
3. Model 3611 Installation
4. Principles of Operation
Overview 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hardware Straps 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Software Configuration 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Verification Testing 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adding a TDM or MCMP to an Installed Model 3611 DSU 3-6. . . . . . . . .
Removing TDM or MCMP from an Installed Model 3611 DSU 3-13. . . . .
Overview 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Network T erminology 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Modes Of Operation 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Time Division Multiplexing 4-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Multichannel Multipoint 4-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Digital Bridge 4-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NMS Control 4-52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SNA Diagnostic Interface 4-53. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5. DSU Operations
Overview 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Control Panels 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Status Indicators 5-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Menu Structure 5-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Status Branch 5-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Backup Branch 5-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T est Branch 5-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuration Branch 5-31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control Branch 5-43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendices
A. Data Service Unit Menu A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B. Configuration Worksheets B-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C. Pin Assignments C-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
D. Configuration Scenarios D-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Index
ii March 1999 3610-A2-GB41-60
Table of Contents
List of Figures
Figure Page
1-1 Model 3610 DSU with TDM or MCMP 1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-2 Model 3611 DSU with TDM or MCMP 1-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-1 Model 3610 TDM/Flex or MCMP/Flex Switch Locations 2-3. . . . . . . . . . . . . . . . . . . .
2-2 Model 3610 TDM/DSD or MCMP/DSD Circuit Card Switch Locations 2-3. . . . . . . . .
2-3 Opening the DSU 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-4 Assembling/Disassembling the TDM or MCMP 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-5 Changing TDM/Flex or MCMP/Flex Interface Compatibility 2-6. . . . . . . . . . . . . . . . .
2-6 Changing TDM/DSD or MCMP/DSD Interface Compatibility 2-7. . . . . . . . . . . . . . . .
2-7 Model 3610 DSU with TDM or MCMP 2-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-8 Disconnecting the DSU 2-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-1 Non-Modular TDM/MCMP Circuit Card Switch Locations 3-3. . . . . . . . . . . . . . . . . . .
3-2 Modular TDM/MCMP Circuit Card Switch Locations 3-4. . . . . . . . . . . . . . . . . . . . . . .
3-3 Non-Modular TDM or MCMP Installation 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-4 COMSPHERE 3000 Series Carrier (Rear) 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-5 Modular TDM or MCMP Installation 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-1 Multipoint Transmission 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-2 Functional Representation of Point-to-Point Multiplexing 4-5. . . . . . . . . . . . . . . . . . . .
4-3 TDM Architecture and Signal Flow 4-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-4 Single-Port Point-to-Point Circuit with Nondisruptive Diagnostics 4-8. . . . . . . . . . . . .
4-5 Multipoint Async-Compatible Network 4-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-6 Point-to-Point Multiplexing 4-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-7 TDM with Extended Circuit 4-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-8 Digital Sharing 4-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-9 Multiplexing and Digital Sharing 4-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-10 FEP Port Sharing 4-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-11 Case 1 – V.32 Backup for Subrate DDS 4-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-12 Case 2 – V.32 Backup for High-Speed DSU 4-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-13 Case 3 – V.32 Backup for DSU with Extended Circuits 4-18. . . . . . . . . . . . . . . . . . . . . .
4-14 Case 4 – Switched 56 DBM Backup for DSU Operating at 56 kbps or Less 4-19. . . . . .
4-15 Case 5 – Aggregate Switched Backup for TDM Circuits Configuration 4-20. . . . . . . . .
4-16 Typical Parallel Networks 4-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-17 Applications Combined on One DDS Multipoint Circuit with MCMP 4-22. . . . . . . . . .
4-18 MCMP Architecture and Signal Flow 4-24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-19 MCMP with Independent Channels 4-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-20 MCMP with Digital Sharing 4-27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-21 Case 1 – Dedicated MCMP Backup with Switched 56 DBMs 4-28. . . . . . . . . . . . . . . . .
4-22 Case 2 – Backing Up the Channels to the Most Important Tributary Location 4-29. . . . .
4-23 Case 3 – Backing Up One Complete Channel (Partial Backup) 4-30. . . . . . . . . . . . . . . .
4-24 Case 3 – Backing Up One Complete Channel (Full Backup) 4-31. . . . . . . . . . . . . . . . . .
iii3610-A2-GB41-60 March 1999
COMSPHERE 3600 Series Data Service Units
Figure Page
4-25 Case 4 – Backing Up (Up to) Three Channels via the FEP Port-Sharing Feature 4-32. .
4-26 Digital Bridge/DCE Interface 4-33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-27 Aggregate Switched Backup for MCMP Circuit Configuration 4-34. . . . . . . . . . . . . . . .
4-28 Multipoint with Digital Bridging 4-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-29 Maximum Bridging Capability – Up to 20 Bridging Ports 4-36. . . . . . . . . . . . . . . . . . . .
4-30 Broadcasting Data Through the Digital Bridge 4-37. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-31 Multipoint DDS Circuit in Partial Backup 4-39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-32 Tributary Addressing via DDS Connections 4-40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-33 Tributary Addressing via Backup Connections 4-41. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-34 Central-Site Bridging Architecture (9.6 kbps) – Normal Operation with
Partial Backup Possible 4-42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-35 Central-Site Bridging Architecture (9.6 kbps) – Partial Backup in Effect 4-43. . . . . . . .
4-36 Central-Site Bridging Architecture (56 kbps) – Inactive Digital Bridge 4-44. . . . . . . . . .
4-37 Central-Site Bridging Architecture (56 kbps) – Active Digital Bridge 4-45. . . . . . . . . . .
4-38 Bridged LADS Operation 4-50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-39 Bridged LADS Architecture and Signal Flow 4-51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-40 Digital Bridge/DSU Interface 4-52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-41 Sample Configuration and LPDA-2 Addressing 4-54. . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-42 Dial Backup with LPDA-2 Configuration 4-55. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-43 Multipoint Dial Backup with LPDA-2 4-56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-44 Multiplexing with TDM (LPDA-2 Monitoring) 4-57. . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-45 Multiplexing with MCMP (LPDA-2 Monitoring) 4-57. . . . . . . . . . . . . . . . . . . . . . . . . . .
4-46 Digital Sharing in a Point-to-Point Circuit 4-58. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-47 Digital Sharing in a Multipoint Circuit 4-59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-48 Digital Sharing in a TDM Circuit (LPDA-2 Monitoring) 4-60. . . . . . . . . . . . . . . . . . . . .
4-49 Digital Sharing in an MCMP Circuit (LPDA-2 Monitoring) 4-61. . . . . . . . . . . . . . . . . .
5-1 Model 3611 DSU and TDM Faceplates 5-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-2 Model 3611 DSU and MCMP Faceplates 5-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-3 DBM-V, DBM-S, and DBM-D Faceplates 5-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-4 Device T est 5-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-5 Local Loopback 5-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-6 DTE Loopback on Port 2 5-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-7 Digital Loopback 5-20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-8 Remote Digital Loopback 5-22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-9 Bilateral Loopback 5-24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-10 Digital Test 5-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-11 End-to-End Test 5-28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-12 Bit Error Rate Tests in TDM or MCMP Mode 5-30. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-13 Choosing Mode of Operation and Setting Configuration Options 5-35. . . . . . . . . . . . . .
C-1 TDM Interface Cable (Feature Number 3600-F2-500) C-2. . . . . . . . . . . . . . . . . . . . . . .
C-2 Digital Bridge Interface Cable (Feature Number 3600-F2-501) C-5. . . . . . . . . . . . . . . .
C-3 Pin Locations on the 60-Position High-Density Connector of the Non-Modular
Carrier-Mounted TDM/MCMP Circuit Card C-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C-4 Modular DSU V.35 Adapter (3000-F1-510) C-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C-5 6-Port Connector Module (Part Number 870-1700-0011) C-14. . . . . . . . . . . . . . . . . . . . .
C-6 6-Port V.35 Interconnect Cable (Feature Number 3600-F3-500) C-16. . . . . . . . . . . . . . .
D-1 TDM Configuration: Scenario 1 – Two Synchronous Channels D-2. . . . . . . . . . . . . . . .
D-2 TDM Configuration: Scenario 2 – Switched 56 kbps Dial Backup D-4. . . . . . . . . . . . .
D-3 Digital Bridge Configuration: Automatic Partial Backup – Dial Backup
Not Active D-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
D-4 Digital Bridge Configuration: Automatic Partial Backup – Dial Backup Active D-7. . .
D-5 Digital Bridge Configuration: Full Backup – Dial Backup Active D-8. . . . . . . . . . . . . .
D-6 Multipoint Full Dial Backup with Nondisruptive Diagnostics Configuration D-11. . . . . .
iv March 1999 3610-A2-GB41-60
Table of Contents
Figure Page
D-7 Extended Bridge Configuration: Automatic Partial Backup –
Dial Backup Not Active D-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
D-8 Extended Bridge Configuration: Automatic Partial Backup Active –
Dial Backup Active for All Drops D-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
D-9 Extended Bridge Configuration: Automatic Partial Backup Active –
Dial Backup Active for T wo Drops D-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
D-10 NMS-Controlled Full Backup Configuration – Dial Backup Not Active D-20. . . . . . . . .
D-11 NMS-Controlled Full Backup Configuration – Dial Backup Active D-21. . . . . . . . . . . . .
D-12 MCMP using FEP Port-Sharing Configuration D-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
D-13 Dedicated MCMP Backup Configuration with Switched 56 DBMs D-27. . . . . . . . . . . . .
D-14 MCMP FEP Port-Sharing Configuration – Dial Backup Not Active D-30. . . . . . . . . . . .
D-15 MCMP FEP Port-Sharing Configuration – Dial Backup Active D-31. . . . . . . . . . . . . . . .
v3610-A2-GB41-60 March 1999
COMSPHERE 3600 Series Data Service Units
Table Page
4-1 LADS Connection Distances 4-48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-1 TDM and MCMP Status Indicators (Model 3611 Only) 5-5. . . . . . . . . . . . . . . . . . . . . .
5-2 DSU with TDM or MCMP and DBM-V/DBM-S/DBM-D Status Indicators 5-6. . . . . .
5-3 DTE Lead Status Codes 5-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-4 Circuit Quality Measurements 5-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-5 Backup Branch Menu Selections 5-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-6 Digital T est Results 5-27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-7 End-to-End Test Results 5-28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-8 Bit Error Rate T est Results 5-29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-9 Complete List of MUX Setup Configuration Options 5-36. . . . . . . . . . . . . . . . . . . . . . . .
5-10 Complete List of MUX Port Configuration Options 5-38. . . . . . . . . . . . . . . . . . . . . . . . .
5-11 Poll List Menu Options 5-40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-12 Directory Entry and Password Characters 5-42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-13 Control Branch Menu Options 5-43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C-1 Time Division Multiplexer Connector Used with Non-Modular TDM C-2. . . . . . . . . . .
C-2 Digital Bridge Connector Used with Non-Modular TDM/MCMP C-5. . . . . . . . . . . . . .
C-3 60-Position High-Density Connector (TDM/MCMP Ports 2 through 6 for
Model 3611 DSU) C-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C-4 EIA-232-D/V.24 Connector (Port 1) C-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C-5 V.35 Connector (Port 1) C-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C-6 Model 3610 (Ports 2 – 6) and Modular DSU 25-Pin V.35 Connector C-13. . . . . . . . . . . .
C-7 EIA-232/V.24 TDM/MCMP Connector (Modular and
Standalone – Ports 2 through 6) C-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C-8 6-Port V.35 Interconnect Cable Connector C-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
List of Tables
vi March 1999 3610-A2-GB41-60
Preface
About this Guide
This applications guide is intended as a supplement to
the operator’s guide; it only contains installation and
operation information that is specific to the Time Division
Multiplexer (TDM), Multichannel Multipoint (MCMP),
and digital bridge options for the COMSPHEREr 3600
Series Data Service Units (DSUs), Models 3610 and 3611.
Since a DBM-V, DBM-S, or DBM-D is only used in
digital bridge configurations, information specific to these
circuit cards is included in this applications guide, along
with SNA Diagnostic Interface information as it applies to
TDM or MCMP configurations. However, a DBM-V,
DBM-S, or DBM-D operates like an internal Dial Backup
Module (DBM), so if your application uses a DBM-V,
DBM-S, or DBM-D, refer to the other applications guide.
Order the COMSPHERE 3600 Series Data Service
Units, Models 3610 and 3611, Operator’s Guide for the
technical specifications for the DSU and all of its options,
basic DSU installation and operation information,
verification of network operation, all configuration
options tables and worksheets, DCP messages for all
options, and troubleshooting flowcharts.
DATAPHONEr II and Diagnostic Microcomputer (DMC)
Network Management System (NMS) references are also
provided, along with a complete equipment list and
glossary .
Order the COMSPHERE 3600 Series Data Service
Units, Models 3610 and 3611, Dial Backup Module and
SNA Diagnostic Interface Options, Applications Guide if
your application uses these options as part of its
configuration, or if your application uses DBM-Vs,
DBM-Ss, or DBM-Ds. It also provides a NetView t
commands reference for your convenience.
How to Use this Guide
Chapter 1 gives a general overview of the features for
the 3600 Series DSU and its TDM and MCMP options.
Refer to this chapter for a summary of feature capability.
Chapter 2 explains how to install and set up a
Model 3610 (standalone) DSU-TDM/Flex or
DSU-MCMP/Flex, or if you have added a TDM/Flex or
MCMP/Flex to your DSU. If you ordered a TDM/DSD or
MCMP/DSD, refer to this chapter to change interface
settings.
Chapter 3 explains how to install and set up a
Model 3611 (carrier-mounted) DSU-TDM or
DSU-MCMP, or to add a TDM or MCMP to your DSU.
Chapter 4 familiarizes you with the basic principles
underlying TDM, MCMP, and digital bridge operation. It
also explains how SNA Diagnostic Interface operation is
affected when using these features.
Chapter 5 identifies and discusses how the DSU
functions differently or has different selections available
when the TDM or MCMP is installed, or when a DBM-V,
DBM-S, or DBM-D is installed.
Appendix A provides a summary of the DSU’s menu
structure. Refer to the menu tree as you proceed through
the menu via the DCP (or SDCP if you have a Model
3611 DSU).
Appendix B provides a summary of all of the
configuration options in the form of Configuration
Worksheets, along with a suggestion for how the
worksheets can be used.
Appendix C provides pin assignments for TDM or
MCMP interfaces and cables.
Appendix D shows typical system configurations
utilizing TDM, MCMP, and digital bridging. These
configurations also indicate the configuration options that
should be set to duplicate these scenarios for your own
applications.
Index
vii3610-A2-GB41-60 March 1999
COMSPHERE 3600 Series Data Service Units
Related Documents
Basic DSU product documentation includes the
following:
3610-A2-GB46 COMSPHERE 3600 Series
Data Service Units, Models
3610 and 3611, User’s Guide
3610-A2-GB48 COMSPHERE 3600 Series
Data Service Units, Models
3610 and 3611, Time Division
Multiplexer, Multichannel
Multipoint, and Digital Bridge
Options, User’s Guide
Supplement
Should more detail about how the DSU operates be
required, the following additional documentation may be
ordered:
3610-A2-GB91 COMSPHERE 3600 Series
Data Service Units,
Models 3610 and 3611,
Operator’s Guide
3610-A2-GN32 COMSPHERE 3600 Series
Data Service Units,
Models 3610 and 3611, Dial
Backup Module and SNA
Diagnostic Interface Options,
Applications Guide
Other product documentation includes the following:
3000-A2-GA31 COMSPHERE 3000 Series
Carrier, Installation Manual
3000-A2-GB41 COMSPHERE –48 Vdc
Central Office Power Unit,
Installation Guide
3610-A2-GB42 COMSPHERE 3600 Series
Data Services Units, Models
3610 and 3611, Secondary
Channel Applications
Supplement
6800-A2-GB31 COMSPHERE 6800 Series
Network Management System
Communications Products
Support Command Reference
Manual
999-100-1961S DATAPHONE II 2600 Series
Data Service Units, User’s
Manual
Contact your sales representative for additional product
documentation.
Paradyne documents are also available on the World
Wide Web at www.paradyne.com. Select Library →
Technical Manuals.
Reference Documents
• AT&T Technical Reference 41458.
• AT&T T echnical Reference 61330.
• AT&T Technical Reference 62310 – 1987.
• Bell Canada DCTE Specifications.
• Bell Communications Research T echnical
Reference Publication 41028.
• CCITT V.35 (ISO 2593).
• EIA-232-D/V.24 (ISO 2110).
• Integrated Network Corporation Compatibility
Bulletin CB-INC-101.
• Northern T elecom NIS S204-2e 1986.
• Pacific Bell PUB L-780035-PB/NB.
• Pacific Bell PUB L-780036-PB/NB.
6700-A2-GB41 COMSPHERE 6700 Series
Network Management System,
User’s Guide, Security
Manager Feature Supplement
6700-A2-GY31 COMSPHERE 6700 Series
Network Management System,
User’s Guide
viii March 1999 3610-A2-GB41-60
Overview
Overview 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standard Features 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Optional Features 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DSU with TDM Capability 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DSU with MCMP Capability 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DSU with Digital Bridge Capability 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DSU with LPDA-2 Interoperability and TDM or MCMP 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Models 1-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Model 3610 with TDM or MCMP 1-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Model 3611 with TDM or MCMP 1-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Models 3610 and 3611 with SNA Diagnostic Interface 1-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DBM Types 1-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DBM-V 1-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DBM-S 1-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DBM-D 1-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Government Requirements 1-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Warranty and Support 1-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
Overview
The COMSPHEREr 3600 Series Data Service Units
(DSUs), Models 3610 and 3611, support communication
between computers and other data processing devices by
providing connections to digital transmission facilities.
The 3600 Series DSUs can be optioned with hardware to
support the following capabilities:
• Dial backup (point-to-point and multipoint).
• LPDA-2 (Link Problem Determination Aid,
Release 2) interoperability.
• Time Division Multiplexing (TDM).
• Multichannel Multipoint (MCMP).
• Digital bridge.
The time division multiplexing, multichannel
multipoint, digital bridge and multipoint backup
capabilities are discussed in this applications guide.
LPDA-2 interoperability, as it applies to applications
requiring installation of the TDM or MCMP option, is
also discussed in this guide.
The time division multiplexer (TDM) option, an
additional circuit card, supports time division
multiplexing and digital sharing for up to six ports. It can
serve as a digital bridge for multipoint dial backup and
multipoint local area data set (LADS) operation.
The multichannel multipoint (MCMP) option is a
circuit card that provides multipoint TDM capability. The
MCMP capability allows up to six independent
application programs to share one 56 kbps multipoint
circuit. Channel speeds can range from 1.2 to 48 kilobits
per second (kbps) and the sum of the speeds must be less
than or equal to 48 kbps.
The TDM can be software-defined to provide the TDM
or digital bridge capability; the MCMP option can be
software-defined to provide TDM, MCMP, or digital
bridge capability . However, only one of these capabilities
can be in effect at a time. The TDM cannot be upgraded to
support MCMP capability.
1-13610-A2-GB41-60 March 1999
COMSPHERE 3600 Series Data Service Units
LPDA-2 interoperability is provided by the systems
network architecture (SNA) Diagnostic Interface option
that is installed on the DSU circuit card. It supports DSU
management from IBM’s NetViewt host-based network
management system (NMS), as well as management from
a Paradyne NMS or the DSU’s diagnostic control panel
(DCP). This option also supports DBM (including the
DBM-V, DBM-S, and DBM-D), TDM, MCMP , and
digital bridge capability.
Standard Features
The 3600 Series DSU, without any options, offers the
following features:
• Multispeed operation.
• Clear Channel capability.
• LADS operation.
• Asynchronous operation.
• Nondisruptive diagnostics.
• NMS control.
• Rate adaption.
• Aggregate switching.
• Diagnostic Control Panel control.
• Full tributary diagnostics.
• External dial backup.
Refer to the COMSPHERE 3600 Series Data Service
Units, Models 3610 and 3611, Operator’s Guide, which
can be ordered, for a description of these features.
NOTE
This applications guide is
designed to be used in
conjunction with the
COMSPHERE 3600 Series Data
Service Units, Models 3610 and
3611, Operator’s Guide
COMSPHERE 3600 Series Data
Service Units, Models 3610 and
3611, Dial Backup Module and
SNA Diagnostic Interface
Options, Applications Guide.
and the
Optional Features
This manual discusses the 3600 Series DSU with the
TDM or MCMP option; it also includes discussion of
DBM-Vs, DBM-Ss, or DBM-Ds, which are used in digital
bridging applications.
Most diagnostic tests and commands available to a
3600 Series DSU without the TDM or MCMP option are
also available with the TDM or MCMP option. Control of
a TDM/MCMP/digital bridge session can be performed
from the DCP, from an Async (Asynchronous) Terminal,
or from a COMSPHERE 6700 or 6800 Series NMS.
Options that provide point-to-point dial backup
capability and LPDA-2 interoperability without the TDM
or MCMP option are discussed in the COMSPHERE
3600 Series Data Service Units, Models 3610 and 361 1,
Dial Backup Module and SNA Diagnostic Interface
Options, Applications Guide.
DSU with TDM Capability
TDM capability allows up to six independent ports to
share one standard digital point-to-point facility. TDM
capability provides the following features:
• Port capacity. The TDM option allows up to six
independent ports. One port is provided on the
DSU, and five EIA-232 ports are provided on the
TDM circuit card. (For a Modular 3611 DSU, V.35
interface is at the top of the 6-port connector
module.)
There are two versions of the Model 3610
TDM/Flex: the 2-port TDM/Flex and the 6-port
TDM/Flex. With one of these features installed,
each port can be set as either an EIA-232 or V.35
interface. When a port other than Port 1 is used for
V.35 operation, a cable adapter is required (feature
number 3000-F1-510).
When a Model 3610 TDM/DSD (digital sharing
device) is ordered, Ports 2 through 6 are configured
for EIA-232 operation. With these models, you can
select either EIA-232 or V.35 operation for this port
group.
• Multiplexing. The TDM option provides time
division multiplexing for up to six independent
ports over one standard DDS (digital data service)
point-to-point facility.
• Line speeds. TDM capability operates at all line
speeds supported by the 3600 Series DSU: 2.4, 4.8,
9.6, 19.2, 38.4, 56, and 64 kbps full-duplex.
1-2 March 1999 3610-A2-GB41-60
Overview
• Port speeds. Speeds of the individual TDM ports
(1 through 6) can be set to 1.2, 2, 2.4, 4, 4.4, 4.8,
7.2, 8.4, 9.2, 9.6, 12, 14.4, 16.8, 18, 18.8, 19.2,
28.8, 32, 38.4, 48, 56, or 64 kbps full-duplex. The
sum of the port speeds cannot exceed the line speed.
• Asynchronous operation. Although the DSU
provides synchronous transmission through the
DDS network, any one or more of the six ports can
be configured for asynchronous operation. The
TDM capability provides the asynchronous-tosynchronous conversion on these ports. In addition
to synchronous data rates, asynchronous data rates
of 150, 300, 600, 1200, and 1800 bps are supported.
The word size is 6 to 10 bits, and one or two stop
bits can be specified.
• Digital sharing. Two groups of consecutive ports
can be formed to share the same TDM channel. All
ports in a digital-sharing group operate at the same
speed and all receive the same data. When
configured for DSD port contention, only one port
at a time is allowed to send.
• FEP port sharing. FEP port sharing is a method of
connecting a front-end processor (FEP) to multiple
control DSUs/modems to broadcast the same
message over the network and the shared port. Up
to three separate FEP port-sharing groups can be
selected. Each group consists of two adjacent ports
(e.g., 1 and 2, 3 and 4, 5 and 6).
FEP data and control signal transmissions pass
through the odd-numbered port for broadcast onto a
TDM channel and the even-numbered port.
• Elastic store per port. The TDM capability
provides a transmit elastic store buffer for each port
to support extended circuits. Both digital and
analog extensions are supported.
• Switched-carrier emulation. In TDM
transmission, switched-carrier emulation for each
port is optional for both the inbound (toward the
control DSU) and outbound (from the tributary
DSU) directions.
• Digital bridge. The TDM can be configured to
perform a digital bridge function. The digital bridge
capability can support many applications, including
dedicated multipoint dial backup and multipoint
LADS operation.
• NMS control. A 3600 Series DSU with TDM has
the same diagnostic capabilities as a point-to-point
3600 Series DSU without the TDM option. Control
of a TDM session can be performed from the DCP
or from a 6700 or 6800 Series NMS.
• Async Terminal control. A Model 3610 DSU with
TDM can be controlled from a VT100-compatible
async terminal. When this feature is enabled, the
DSU is operated from the async terminal’s menu
and keyboard.
• Point-to-point backup. A 3600 Series DSU with
TDM can also have a DBM installed for
point-to-point dial backup. If backup is at a
different speed than the DSU’s speed, TDM
operation automatically changes to a second
predetermined port speed to support dial backup
operation at the lower speed.
• Aggregate switching. Aggregate switching
provides an additional mode of point-to-point dial
backup. When enabled, it provides an internal
aggregate data stream that includes diagnostics and
framing on the alternate EIA-232-D or V.35
interface of Port 1. The aggregate port can then be
connected to a DBM or an external dial backup unit
(DBU).
• External dial backup. An external DBU (e.g., a
3800 Series dial/lease modem) can provide backup
for a point-to-point DSU. By monitoring the Data
T erminal Ready (DTR) lead on the DTE port that
supports the aggregate data path, the 3600 Series
DSU can set up a backup session when the external
DBU receives an incoming call. The DTR lead of
the DSU’s alternate DTE port then switches the
data path. Using another method, the local
3600 Series DSU can initiate and terminate a
backup call by controlling the DTR lead of the
external DBU by controlling the Data Set Ready
(DSR) lead.
1-33610-A2-GB41-60 March 1999
COMSPHERE 3600 Series Data Service Units
DSU with MCMP Capability
The MCMP capability is an enhancement to TDM and
allows up to six independent application programs to
share one standard 56 kbps multipoint facility. Only an
MCMP can be configured to provide MCMP capability
and provides the following features:
• Channel capacity. The channel capacity is six
channels, which can be assigned to any of the
physical ports. One port is provided on the DSU,
and one (2-port version) or five EIA-232 ports are
provided on the MCMP circuit card. Up to six
virtual multipoint circuits can exist over one
standard DDS multipoint facility.
There are two versions of the Model 3610
MCMP/Flex: the 2-port MCMP/Flex and the 6-port
MCMP/Flex. With one of these features installed,
each port can be set as either EIA-232 or V.35
interface. When a port other than Port 1 is used for
V.35 operation, a cable adapter is required (feature
number 3000-F1-510).
When a Model 3610 MCMP/DSD (an MCMP that
can operate as a digital sharing device) is ordered,
Ports 2 through 6 are configured for EIA-232
operation. You can select either EIA-232 or V.35
operation for this port group.
• Number of addressable devices. The MCMP
capability supports up to 40 tributary DSUs or
20 tributary DSUs with DBMs, each equipped with
an MCMP circuit card.
• Line speeds. The MCMP capability operates at
56 kbps full-duplex. The total usable bandwidth for
the port is an aggregate bit rate of up to 48 kbps.
• Digital sharing. Up to three digital-sharing groups
can be formed at each tributary site by assigning
channels to more than one port. Since all ports in a
digital-sharing group share the same channel, all
ports operate at the same speed and all receive the
same data.
With MCMP capability, digital sharing and
multiplexing can be in effect simultaneously at any
of the tributary sites.
• FEP port sharing. Up to three separate FEP
port-sharing groups can be selected when using the
MCMP option, each consisting of two adjacent
ports (e.g., 1 and 2, 3 and 4, 5 and 6). FEP
port-sharing is a method of connecting an FEP to
multiple control DSUs/modems to broadcast the
same message over the network and the shared port.
FEP data and control signal transmissions pass
through the odd-numbered port for broadcast onto a
TDM channel and the even-numbered port.
• Elastic store per port. The MCMP capability
provides a transmit elastic store buffer on each port
to support extended circuits. Both digital and
analog extensions are supported.
• Switched-carrier emulation. In MCMP
transmission, switched-carrier emulation for each
channel is standard inbound (toward the control
DSU) and optional outbound (from the tributary
DSU).
• Async Terminal control. A Model 3610 DSU with
MCMP can be controlled from an async terminal.
When this feature is enabled, the DSU is operated
from the async terminal’s menu and keyboard.
• Channel speeds. Speeds of the individual channels
can be arbitrarily set to 1.2, 2.4, 4.8, 7.2, 9.6, 12,
14.4, 16.8, 19.2, 38.4, or 48 kbps full-duplex. The
sum of the channel speeds cannot exceed 48 kbps.
• Dial backup. Dial backup using the aggregate
switching and extended bridge capabilities allow
for multipoint service restoration. When aggregate
switching is enabled, the DSU provides an internal
aggregate data stream that includes diagnostics and
• Asynchronous operation. Although the DSU
provides synchronous transmission through the
DDS network, any of the channels (ports) can be
configured for asynchronous operation. The MCMP
capability provides the asynchronous-tosynchronous conversion on these channels.
framing on the EIA-232-D and V.35 interfaces of
Port 1. The aggregate port (the DTE port not
selected under the General option set) can then be
connected to an extended bridge so the data can be
sent to multiple Switched 56 DBMs – either 2-wire
or 4-wire.
The channel speed choices are the same as those for
synchronous operation. The word size can range
from 6 to 10 bits, and one or two stop bits can be
specified. Asynchronous data rates of 150, 300,
600, 1200, and 1800 bps are also supported.
1-4 March 1999 3610-A2-GB41-60
Overview
DSU with Digital Bridge Capability
The digital bridge capability is dedicated to a single
DSU, and the data terminal equipment (DTE) connected
to that DSU is usually the controlling DTE of a multipoint
network. Both TDM and MCMP can be configured to
provide the digital bridge capability. The digital bridge
capability can support many applications, including
dedicated multipoint dial backup and multipoint LADS
operation.
This capability is used primarily for dedicated
multipoint dial backup. A digital data service multipoint
network is backed up with public switched telephone
network (PSTN) or switched 56 kbps calls between the
central-site and remote-site DBMs that are tied together
by the digital bridge.
The digital bridge capability, when used to support
dedicated multipoint dial backup, provides the following
features:
• Number of tributaries. Dedicated multipoint dial
backup can back up as many as 20 tributary DSUs.
T o do this, four additional DSUs with TDM, each
configured for extended bridge (EBrdg), are
required.
• Multispeed operation. Multipoint dial backup
using the V.32 DBM or DBM-V operates at a
customer-specified rate of 2.4, 4.8, 9.6, 12, or
14.4 kbps full-duplex. Fallback (training at a lower
rate) is not allowed. Using either the 2-wire or
4-wire Switched 56 DBM (DBM-D or DBM-S,
respectively), the DBM operates at 56 kbps.
• Partial and full backup. Multipoint dial backup
can provide both partial and full backup on DDS
multipoint circuits. For partial backup, the DSU’s
rate must equal the DBM’s rate. Full backup must
be performed if the DSU’s rate is not equal to the
DBM’s rate.
• Restoration. When the DSU rate equals the DBM
rate, tributary DSUs can be configured to
automatically drop the backup connection and
switch back to the DDS facility when service has
been restored to the DDS network. When the DSU
rate is not equal to the DBM rate, restoration can
only be accomplished remotely from an NMS or
manually from the control DSU’s DCP.
• Setup. A backup session can be set up
automatically by the tributary DSUs (if the DSU’s
rate is equal to the DBM’s rate), controlled
remotely from an NMS, or initiated manually from
a control DSU’s shared diagnostic control panel
(SDCP).
DSU with LPDA-2 Interoperability and
TDM or MCMP
The SNA Diagnostic Interface firmware upgrade, using
the Release 2 Link Problem Determination Aid (LPDA-2)
protocol, is installed on the DSU circuit card. LPDA-2
interoperability provides the following features:
• Link Problem Determination Aid. This protocol
emulates IBM 5822 DSUs that use the LPDA-2
protocol, allowing the 3600 Series DSU to be
controlled from IBM’s NetView network
management program. With TDM or MCMP, this
option is only supported on Port 1. For digital
sharing, all ports are supported.
• NMS control. The 3600 Series DSUs operating
with the LPDA-2 option can respond to commands
from NetView, the NMS, the DSU’s DCP, or all
three.
• Full option support. With the LPDA-2 option
installed, all other 3600 Series DSU options are
accommodated: DBM, TDM, or MCMP.
• Security. The V.32 DBM or DBM-V, the 4-wire
Switched 56 DBM or DBM-S, or the 2-wire
Switched 56 DBM or DBM-D provide four levels
of call setup security: None, Password, Callback,
and Alarm. Alarm allows the DBM, DBM-V,
DBM-S, or DBM-D to answer only incoming calls
when there is a Facility Alarm on the DDS line.
1-53610-A2-GB41-60 March 1999
COMSPHERE 3600 Series Data Service Units
Models
The 3600 Series DSUs are available in two models:
• Model 3610 is a standalone desktop unit.
• Model 3611 is a circuit card for installation in a
COMSPHERE 3000 Series Carrier.
NOTE
Except
where specifically noted,
all features and capabilities of the
3600 Series DSUs with the TDM
or MCMP option discussed in this
applications guide apply equally
to both models. However , the two
models are not interchangeable.
Model 3610 with TDM or MCMP
The housing of the Model 3610 DSU with TDM or
MCMP has an expanded base which is designed to
accommodate both the DSU circuit card and the TDM or
MCMP circuit card (Figure 1-1).
The TDM or MCMP circuit card provides up to five
additional 25-pin EIA-232 interface connectors (ports) on
the rear of the housing. These ports, together with the
DSU’s EIA-232-D/V.24 interface connector (Port 1),
provide for 2-port or 6-port multiplexing or digital
sharing.
A Model 3610 DSU with TDM/Flex or MCMP/Flex
may be a 2- or 6-port version. You can configure each
port independently to operate as either an EIA-232 or
V.35 interface. Ports are configured via the DCP, an async
terminal, or an NMS. When a port other than Port 1 is
used for V.35 operation, a cable adapter is required
(feature number 3000-F1-510).
they fill two adjacent slots in the COMSPHERE 3000
Series Carrier.
There are two types of Model 3611 TDM or MCMP
circuit cards: non-modular and modular.
The non-modular TDM or MCMP provides a single
multiport interface connector mounted directly onto the
rear of the TDM or MCMP circuit card. The EIA-232-D/
V.24 or V.35 interface connector at the rear of the DSU is
Port 1; the TDM or MCMP multiport interface connector
provides five additional EIA-232 ports (2 through 6). A
special multiport cable fans out from the single multiport
interface connector to five individual EIA 25-pin DTE
connectors. Together with the Port 1 interface connector,
the multiport cable provides for 6-port multiplexing or
digital sharing.
The modular TDM or MCMP contains “gold finger”
contacts on the rear edge of the circuit card and is used
with the 6-port connector module that contains six DB25
connectors. There is one connector for each port and a
multiport cable is not needed. The 6-port connector
module also provides a 26-pin high-density D-type
connector for a V.35 interface for Port 1 and is located at
the top of the module. This connector requires a 6-port
V.35 Interconnect Cable that must be ordered separately.
The non-modular TDM or MCMP can be installed on a
non-modular or modular DSU, while the modular TDM or
MCMP can only be installed on a modular DSU. With the
non-modular TDM or MCMP, the DTE cables must be
removed before removing the DSU-TDM or DSU-MCMP
unit from the carrier. However, with the modular TDM or
MCMP, you can remove the DSU-TDM or DSU-MCMP
unit from the from of the carrier without disconnecting the
DTE cables from the rear of the carrier.
Low voltage ac power from the carrier’s backplane is
provided to the TDM or MCMP circuit card, and a power
supply on the TDM or MCMP circuit card produces the
regulated dc operating voltage.
When the TDM/DSD or MCMP/DSD (EIA-232/V.35)
is installed, you can select either EIA-232 or V.35
interface compatibility for Ports 2 through 6 by changing
the option card.
Model 3611 with TDM or MCMP
The Model 3611 DSU with TDM or MCMP consists of
a Model 3611 circuit card and a TDM or MCMP circuit
card that are physically connected (Figure 1-2). As a unit,
1-6 March 1999 3610-A2-GB41-60
Models 3610 and 3611 with
SNA Diagnostic Interface
The Models 3610 and 3611 with the SNA Diagnostic
Interface or LPDA-2 consist of a firmware upgrade that
allows the DSU to be controlled by NetView. A 3600
Series DSU can be ordered from the factory with this
option installed. This option can be also be field installed
by your Customer Support representative or upgraded by
Factory Service.
COMSPHERE 3610
STATUS
INDICATORS
Overview
DIAGNOSTIC
CONTROL
PANEL
WALL-MOUNT
AC TRANSFORMER
TABLE-TOP
AC TRANSFORMER
INTERFACE
LOW VOLTAGE
AC POWER IN
Figure 1-1. Model 3610 DSU with TDM or MCMP
DDS
PORT 5
PORT 6
DBM
INTERFACE
V.35 INTERFACE
(PORT 1)
NETWORK
DIAGNOSTIC
INTERFACE
EIA232D/V.24
INTERFACE
(PORT 1)
PORT 2
PORT 3
PORT 4
ADDITIONAL EIA-232
INTERFACES
PORT NUMBERS 2 – 6
496-13091-04
1-73610-A2-GB41-60 March 1999
COMSPHERE 3600 Series Data Service Units
Figure 1-2. Model 3611 DSU with TDM or MCMP
1-8 March 1999 3610-A2-GB41-60
Overview
DBM Types
Three dial backup modules (DBMs) are available. A
DBM is optional and provides an alternate data path in
case the digital connection fails. Each of the three DBM
types listed below occupy one slot in the COMSPHERE
3000 Series Carrier.
DBM-V
A DBM-V is used for point-to-point dial backup and
provides multipoint dial backup with a digital bridge. The
DBM-V provides a carrier-mounted, 14.4 kbps V.32bis
module that is compatible with the DBM associated with
3600 Series DSUs and with a COMSPHERE 6700 or
6800 Series NMS.
DBM-S
A DBM-S provides the capability to utilize the 4-wire
switched 56 kbps digital service to back up a failed
multipoint DDS circuit via a digital bridge. It is
particularly useful in an MCMP backup environment. The
DBM-S can be used on switching services that are
compatible with AT&T, MCIr, and US SPRINTr using
dedicated 4-wire access.
Government Requirements
For the Government Requirements and specific
instructions pertaining to connection to the telephone
network, refer to the COMSPHERE 3600 Series Data
Service Units, Models 3610 and 361 1, User’s Guide.
Equipment W arranty
and Support
For the Equipment Warranty and Support instructions,
refer to the COMSPHERE 3600 Series Data Service
Units, Models 3610 and 3611, User’s Guide.
NOTE
If the DSU-TDM or DSU-MCMP
was ordered as an integrated
unit and needs repair, contact
your service representative;
not remove the TDM or MCMP
from the DSU
.
do
DBM-D
A DBM-D provides the capability to utilize the 2-wire
switched 56 kbps digital service to back up a failed
multipoint DDS circuit via a digital bridge. It is
particularly useful in an MCMP backup environment. The
DBM-D can be used on switching services that are
compatible with Northern T elecom’s DataPatht service
using dedicated 2-wire access.
NOTE
References to DBM operation in
this guide also apply to a DBM-V,
DBM-S, or DBM-D.
1-93610-A2-GB41-60 March 1999
COMSPHERE 3600 Series Data Service Units
1-10 March 1999 3610-A2-GB41-60
Model 3610 Installation
Overview 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hardware Straps 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing Hardware Settings 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing the Flex Interface Switch 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing the DSD Option Card 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Connection 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power-Up Routine 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Network Diagnostic Connection 2-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Software Configuration 2-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
From the DCP and Async Terminal 2-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
From the NMS 2-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Network and LADS Connections 2-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DSU DTE Connection 2-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Verification Testing 2-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adding a TDM/Flex or MCMP/Flex to an Installed Model 3610 DSU 2-13. . . . . . . . . . . . . . . . . . . . . . . . . .
Getting Started 2-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the DSU from its Base 2-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing a TDM/Flex or MCMP/Flex 2-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reassembling the Unit 2-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
Overview
The Model 3610 DSU, designed for desktop operation,
is delivered with default hardware strap settings and
factory-installed software options, ready to connect to the
network. The unit is configured as a tributary DSU for
operation at 9.6 kbps on a point-to-point circuit, with
diagnostic protocol set to ADp.
When a TDM or MCMP is installed, Port 1 of the DSU
is configured to operate at 9.6 kbps with the TDM or
MCMP capability enabled; all other ports are disabled.
For the Model 3610, the additional ports provided by
the TDM or MCMP are 25-pin D-type connectors, which
require an interface between each 25-pin D-type
connector and V.35 connector. Order a V.35 adapter
(feature number 3000-F1-510) for each TDM or MCMP
port that you intend to operate as a V.35 interface. All
ports are configured for EIA-232 operation before leaving
the factory.
If you ordered a new Model 3610 DSU with a
TDM/Flex or MCMP/Flex, it may be a 2- or 6-port
version. You can configure each port independently to
operate as either an EIA-232 or V.35 interface. Ports are
configured via the DCP, an async terminal, or an NMS
through the Configuration (Confg) branch of the menu.
If you ordered a Model 3610 TDM/DSD or
MCMP/DSD for digital-sharing device (DSD)
applications, which only comes in a 6-port version, turn
the option card on the TDM or MCMP so all ports can
operate as either EIA-232 or V.35 interfaces.
If you ordered a TDM/Flex or MCMP/Flex field
installation upgrade and have a DSU with a firmware
version less than 6.3x, set the TDM or MCMP switch to
change all ports from EIA-232 to V.35 operation; they
cannot be set via the DCP. These ports should be set
during the installation, but they can be changed as needed
provided you have the required V.35 adapter or adapters.
Only the 6-port TDM/Flex or MCMP/Flex can be used
with DSUs with firmware version (DSU SW ver:) less than
6.3x. For further information regarding ordering
equipment, see Appendix C, Equipment List, in the
COMSPHERE 3600 Series Data Service Units,
Models 3610 and 3611, Time Division Multiplexer,
Multichannel Multipoint, and Digital Bridge Option,
User’s Guide Supplement.
2-13610-A2-GB41-60 March 1999
COMSPHERE 3600 Series Data Service Units
This chapter contains only installation information that
is specific to a TDM or MCMP, including the Flex and
DSD options.
NOTE
Unless specifically noted, TDM
refers to a TDM, TDM/Flex, or
TDM/DSD, and MCMP refers to
an MCMP, MCMP/Flex, or
MCMP/DSD.
TDM or MCMP installation consists of the following
procedures, which should be performed in the order listed.
• Physical installation of the TDM or MCMP.
• Change the S1 hardware strap (if necessary).
• Changing the switch position for the TDM/Flex or
MCMP/Flex for a DSU having a firmware version
less than 6.3x, or orientation of the TDM/DSD or
MCMP/DSD option card (if necessary).
• Electrical connection.
• Network diagnostic connection.
• Software configuration.
• DDS network (or LADS) connection.
• PSTN or switched 56 kbps network connection
(if the DBM is installed).
• DSU DTE connection.
• Operation verification.
Although the Model 3610 DSU is designed for desk- or
table-top operation, an ACCULINKr 3100 Series CSU
wall-mount adapter may be ordered to mount the DSU
with TDM or MCMP on a wall, an equipment shelf, a
19-inch RS-310-C or 23-inch AT&T DATAPHONEr
equipment cabinet. T o order the adapter, refer to
Equipment Lists, Appendix L, of the COMSPHERE
3600 Series Data Service Units, Models 3610 and 361 1,
Operator’s Guide.
For DSU installation information, order the
COMSPHERE 3600 Series Data Service Units, Models
3610 and 3611, Operator’s Guide. For DBM and SNA
Diagnostic Interface installation information, order the
COMSPHERE 3600 Series Data Units, Models 3610 and
3611, Dial Backup Module and SNA Diagnostic Interface
Options, Applications Guide.
Hardware Straps
HANDLING PRECAUTIONS
FOR
ST ATIC-SENSITIVE DEVICES
This product is designed to protect
sensitive components from damage
due to electrostatic discharge (ESD)
during normal operation. When
performing installation procedures,
however, take proper static control
precautions to prevent damage to
equipment. If you are not sure of the
proper static control precautions,
contact your nearest sales or service
representative.
The 6-port Model 3610 TDM/Flex or MCMP/Flex has
two switches with hardware straps (refer to Figure 2-1).
• Switch S1 is for configuring a 6-port TDM/Flex or
MCMP/Flex for EIA-232 or V.35 interface
compatibility when the DSU’s firmware version is
less than 6.3x; all ports are configured for either
EIA-232 or V.35 operation. You can only use a
6-port TDM/Flex or MCMP/Flex with a DSU that
has a firmware version of less than 6.3x.
S1 is ignored if the DSU’s firmware version is 6.3 x
or greater; the 2-port TDM/Flex or MCMP/Flex
does not have S1.
• Switch S2 is only located on an MCMP/Flex; these
straps must not be changed.
For the TDM/DSD and MCMP/DSD with selectable
V.35 or EIA-232 interface compatibility on all ports via an
option card, there are two hardware straps or switches that
are for factory testing only. These two straps or switches
must not be changed. They should remain in the
positions shown in Figure 2-2.
Most straps for the TDM or MCMP are set as
configuration options. For additional DSU hardware strap
information, refer to the COMSPHERE 3600 Series Data
Units, Models 3610 and 3611, User’s Guide.
2-2 March 1999 3610-A2-GB41-60
Model 3610 Installation
Figure 2-1. Model 3610 TDM/Flex or MCMP/Flex Switch Locations
Figure 2-2. Model 3610 TDM/DSD or MCMP/DSD Circuit Card Switch Locations
2-33610-A2-GB41-60 March 1999
COMSPHERE 3600 Series Data Service Units
Changing Hardware Settings
If you have a new TDM/Flex or MCMP/Flex or if you
ordered a Flex field installation upgrade for a DSU having
firmware version 6.3x or greater, you do not change
hardware straps; you set each port to operate
independently of the others via the DCP, an async
terminal, or an NMS.
If you ordered the 6-port TDM/Flex or MCMP/Flex
field installation upgrade for a DSU having a firmware
version less than 6.3x, use the S1 switch to change the
TDM or MCMP port interface operation – EIA-232 or
V.35.
If you have a TDM/DSD or MCMP/DSD, use the
option card to change the TDM or MCMP port interface
operation – EIA-232 or V.35.
Follow this procedure to open the DSU and separate it
from the TDM or MCMP (refer to Figures 2-3 and 2-4).
Select the appropriate procedure based upon the type of
TDM or MCMP you have – either the switch (Flex) or
option card (DSD).
NOTE
If the unit has already been
installed, make sure that the unit
is disconnected from its power
source before changing the Flex
interface switch position.
" Procedure
1. With the unit upside down, use a small flat-head
screwdriver to release the four snap tabs holding
the base in place (refer to Figure 2-3).
2. Turn the unit over while being careful not to allow
any cable to be pulled free of the connectors.
COMSPHERE 3610
COMSPHERE 3610
WITH TDM/FLEX
OR MCMP/FLEX
SNAP T ABS
SNAP T ABS
Figure 2-3. Opening the DSU
SNAP T AB
SNAP T AB
NUMBER
PEC
MFG DATE
MODEL
SER.NO
NO.
COMM CODE
MADE IN USA
U
L
R
THIS DIGITAL APPARATUS DOES NOT EXCEED THE CLASS A LIMITS FOR RADIO NOISE
EMISSIONS FROM DIGITAL APPARATUS SET OUT IN THE RADIO INTERFERENCE
REGUAALTIONS OF THE CANADIAN DEPARTMENT OF COMMUNICATIONS
FOR USE WITH A CERTIFIED CLASS 2 POWER SUPPLY FOUR UTILISER AVEC LINE
ALIMENTATION CERTIFEE
EN CLASSE 2.
THIS DEVICE COM;OIES WITH PART 15 OF THE FCC RULES OPERATION IS SUBJECT TO
THE FOLLOWING TWO CONDITIONS (1) THIS DEVICE MAY NOT CAUSE HARMFUL
INTERFERENCE AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED
INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION.
FCC ID: NOT APPLICABLE
496-14518a-01
SERIAL
R
2-4 March 1999 3610-A2-GB41-60
Model 3610 Installation
3. Disconnect the keypad flat cable from the DSU
circuit card by squeezing the latches on each side
of the cable and gently pulling up (refer to
Figure 2-4).
4. Disconnect the LCD flat cable by gently working
the cable, not the connector, free of its connector.
Be careful not to bend any of the cable pins.
5. Disconnect the TDM/MCMP flat cable.
6. Unscrew the three screws that hold the DSU
circuit card in place.
7. Remove the DSU from the base. Carefully lift the
DSU up until its connectors are free of the rear
panel. Set the DSU on a clean ESD (anti-static)
workpad.
Figure 2-4. Assembling/Disassembling the TDM or MCMP
2-53610-A2-GB41-60 March 1999
COMSPHERE 3600 Series Data Service Units
Changing the Flex Interface Switch
The TDM or MCMP field installation upgrade is
shipped from the factory with the switch position set to
EIA-232. The following procedure tells you how to
change this setting to V.35 or back to EIA-232.
" Procedure
1. Determine whether the port interfaces will be
strapped for EIA-232 or V.35.
2. Locate interface Switch S1 on the TDM/Flex or
MCMP/Flex circuit card (Figure 2-5).
If you have the 6-port version of the TDM/Flex or
MCMP/Flex, Switch S1 has four straps, but only
Strap 1 is used. (S1 is not installed on 2-port
versions of the TDM/Flex or MCMP/Flex.)
3. Insert a small pointed tool into position 1 of
Switch S1, and carefully flip the switch in the
direction of the circuit card label identifying the
setting. T o select EIA, push switch to EIA (Off)
direction. T o select V.35, push switch to V.35
(ON) direction.
4. Reinstall the DSU circuit card, securing it to the
base with the three screws (refer to Figure 2-4).
5. Reconnect the LCD, keypad, and TDM/MCMP
flat cables.
6. Replace the cover over the expanded base,
carefully aligning the rear panel and four snap tabs
over their corresponding slots.
7. Press the cover and base together until all four
tabs snap into place.
Figure 2-5. Changing TDM/Flex or MCMP/Flex Interface Compatibility
2-6 March 1999 3610-A2-GB41-60
Model 3610 Installation
Changing the DSD Option Card
The TDM/DSD or MCMP/DSD is shipped from the
factory with the option card set to EIA-232. The following
procedure tells you how to change this setting to V.35 or
back to EIA-232.
NOTE
If the unit has already been
installed, make sure that the unit
is disconnected from its power
source before changing the
option card.
" Procedure
1. Gently work the option card free of its connector
(refer to Figure 2-6).
OPTION
CARD
THIS SIDE FACES REAR FOR V .35
2. Turn the card around, and re-insert the option card
so that from the rear, the option card reads THIS
SIDE F ACES REAR FOR V.35.
3. Reinstall the DSU circuit card, securing it to the
base with the three screws (refer to Figure 2-4).
4. Reconnect the LCD, keypad, and TDM/MCMP
flat cables. For the TDM/MCMP flat cable, make
sure the flat-cable ferrite choke is properly
positioned on the edge between the DSU and the
TDM/MCMP circuit card.
5. Replace the cover over the expanded base,
carefully aligning the rear panel and four snap tabs
over their corresponding slots.
6. Press the cover and base together until all four
tabs snap into place.
REAR
PANEL
LED 2
(YELLOW
V.35)
LED 1
(GREEN
EIA-232)
Figure 2-6. Changing TDM/DSD or MCMP/DSD Interface Compatibility
496-13845-02
2-73610-A2-GB41-60 March 1999
COMSPHERE 3600 Series Data Service Units
Electrical Connection
CAUTION
The power cord with ac
transformer contains a 3-wire
grounding-type plug which
has a grounding pin. This is a
safety feature. Grounding of
the unit is vital to ensure safe
operation. Do not defeat the
purpose of the grounding
plug by modifying it or by
using an adapter.
Prior to installation, use an
outlet tester or voltmeter to
check the ac receptacle for
earth ground. If the power
source does not provide a
ground connection, consult
an electrician to determine
another method of grounding
the unit before proceeding
with the installation.
CAUTION
Only use the power transformer
designed for the Model 3610
DSU. Using other transformers
may result in personal injury or
damage to the equipment.
4. Reinstall the factory configuration options; use the
FacT configuration for a tributary or FacC for a
control.
5. Make any desired configuration changes in the
DSU, Diag, DBM, Gen, Bckup, MUX, PrtSp, and
LPDA-2 option sets.
For information on the TDM, MCMP, or digital
bridge option sets, refer to the Unit Configuration
section of this guide and the COMSPHERE
3600 Series Data Service Units, Models 3610 and
361 1, User’s Guide or the COMSPHERE 3600
Series Data Service Units, Models 3610 and 361 1,
Operator’s Guide.
T o power up the DSU:
" Procedure
1. Use a non-switched, 3-prong grounded ac wall
outlet capable of supplying the specified voltage
and current.
2. Label the circuit breaker that protects the wall
outlet and be sure it is set to ON.
3. At the rear of the DSU (Figure 2-7), insert the
small end of the power cable into the power
receptacle.
If you have a table-top ac transformer, connect the
3-prong plug to the ac outlet. If you have a
wall-mount ac transformer, connect the
ac transformer to the ac outlet.
The unit performs a power-up routine.
Power-Up Routine
When power is applied, the DSU:
• Determines what options are installed (DBM or
MUX – the TDM or MCMP).
• Runs a Device T est on the unit and each of the
installed options.
During the tests, all indicators on the DCP light
briefly and the message Power-Up Tests appears
on the liquid crystal display (LCD).
• Displays the results of each test momentarily as
Pass, Fail, or Abrt. These tests take about
20 seconds to complete. Abrt indicates that the
Device T est was aborted because a network
loopback was in progress during the power-up
procedure.
When a TDM or MCMP is installed, MUX is
displayed as Pass or Fail.
2-8 March 1999 3610-A2-GB41-60
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