Nortel DMS-100 Series User manual

297-8223-550
DMS 100 Family
Remote Switching Center
Remote Switching Center Multi-Access Maintenance Manual
XPM11 and up Standard 04.02 November 2000

DMS 100 Family
Remote Switching Center
Remote Switching Center Multi-Access Maintenance Manual
Publication number: 297-8223-550
Product release: XPM11 and up
Document release: Standard 04.02
Date: November 2000
Copyright © 1996-2000 Nortel Networks,
All Rights Reserved
Printed in the United States of America
NORTEL NETWORKS CONFIDENTIAL: The information contained herein is the property of Nortel Networks and is
strictly confidential. Except as expressly authorized in writing by Nortel Networks, the holder shall keep all information contained
herein confidential, shall disclose the information only to its employees with a need to know, and shall protect the information, in
whole or in part, from disclosure and dissemination to third parties with the same degree of care it uses to protect its own
confidential information, but with no less than reasonable care. Except as expressly authorized in writing by Nortel Networks, the
holder is granted no rights to use the information contained herein.
Information is subject to change without notice. Nortel Networks reserves the right to make changes in design or components as
progress in engineering and manufacturing may warrant. Changes or modification to the DMS-100 without the express consent of
Nortel Networks may void its warranty and void the users authority to operate the equipment.
Nortel Networks, the Nortel Networks logo, the Globemark, How the World Shares Ideas, Unified Networks, DMS, DMS-100,
Helmsman, MAP, Meridian, Nortel, Northern Telecom, NT, SuperNode, and TOPS are trademarks of Nortel Networks.

DMS-100 Family Remote Switching Center Multi-Access Maintenance Manual XPM11 and up
iii
Contents
Remote Switching Center Multi-Access Maintenance Manual
About this document vii
How to check the version and issue of this document vii
References in this document vii
What precautionary messages mean vii
How commands, parameters, and responses are represented ix
Input prompt (>) ix
Commands and fixed parameters ix
Variables ix
Responses ix
1 RSC-M maintenance introduction 1-1
2 Maintenance overview 2-1
Hardware description 2-2
Common peripheral module 2-2
Modular supervisory panel in RSC-M 2-3
Functional description 2-13
In-service firmware downloading 2-13
RSC-M 2-17
Extended Distance Capability 2-22
Peripheral communication 2-23
Emergency stand-alone operation 2-25
Signaling 2-25
RSC-M maintenance 2-26
RSC-M maintenance 2-26
RSC-M node maintenance 2-27
RSC-M carrier maintenance 2-28
RSC-M lines maintenance 2-31
RSC-M call process 2-35
Computing module data synchronization 2-35
To Update static data 2-36
Return the RSC-M to service 2-40
Switch of activity 2-41
Fault conditions 2-48
RSC-M 2-48

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297-8223-550 Standard 04.02 November 2000
Automatic maintenance 2-59
Routine exercise test 2-59
Overload resources 2-66
Escalation to manual maintenance 2-66
3 RSC-M hardware 3-1
Hardware components 3-1
CPM packaging 3-1
CPM cabinet 3-1
Single-cabinetized RSC-M configuration 3-2
Provisioning 3-3
4 RSC-M Signaling and Communications 4-1
Signaling and communications protocols 4-1
CAS protocol 4-1
Signaling and communications types 4-2
RSC-M call setup protocol 4-3
CAS to BTUP and BTUP to CAS signaling 4-4
DC5 to BTUP and BTUP to DC5 signaling 4-11
5 RSC-M alarm clearing procedures 5-1
Ext RSC-M/RCO2 RSC-M cabinet with MSP shelf major 5-2
PM RSC-M/RCO2 critical 5-10
PM RSC-M/RCO2 major 5-22
PM RSC-M/RCO2 minor 5-33
6 RSC-M card replacement procedures 6-1
NT6X69 in an RSC-M 6-2
NT6X78 in an RSC-M 6-12
NT6X92 in an RSC-M 6-19
NTMX72 in an RSC-M 6-26
NTMX73 in an RSC-M 6-34
NTMX74 in an RSC-M 6-41
NTMX75 in an RSC-M 6-50
NTMX76 in an RSC-M 6-57
NTMX77 in an RSC-M 6-64
NTMX79 in an RSC-M 6-71
NTMX82 in an RSC-M 6-77
NTMX87 in an RSC-M 6-88
NTRX41 in an RSC-M/MSP 6-100
NTRX42 in an RSC-M/MSP 6-105
NTRX43 in an RSC-M/MSP 6-117
NTRX54 in an RSC-M/MSP 6-125
Returning a card for repair or replacement in an RSC-M/RCO2 6-132
7 Locating and clearing RSC-M trouble 7-1
8 RSC-M trouble isolation and correction 8-1
Troubleshooting the RSC-M 8-1

Contents v
DMS-100 Family Remote Switching Center Multi-Access Maintenance Manual XPM11 and up
Trouble condition indicators 8-1
Locating and clearing faults 8-3
Fault isolation program 8-4
Office recovery program 8-4
User interface for the RSC-M at the PM level of the MAP display 8-5
User interface for external alarms 8-12
User interface for carrier maintenance 8-12
Fault isolation tests 8-15
Handling a SysB RSC-M unit 8-15
Handling an ISTb RSC-M unit 8-16
Handling data mismatch 8-16
Handling an IMC link fault 8-16
Diagnostic tests 8-20
XPM diagnostic history 8-20
ROM diagnostic 8-28
Matrix card diagnostic 8-29
Sync diagnostics for the NTMX73 circuit card 8-29
Message diagnostic 8-30
Tones diagnostic 8-30
Speech path diagnostic 8-31
P-side loop diagnostic 8-31
CMR diagnostic 8-31
9 RSC problem solving chart 9-1
10 RSC-M advanced troubleshooting procedures 10-1
Powering up the RSC-M 10-1
Powering down the RSC-M 10-2
11 RSC-M recovery procedures 11-1
Recovering an out-of-service RSC-M/RCO2 11-2
12 RSC-M routine maintenance procedures 12-1
Checking torque on grounding bolts 12-2
Cooling unit replacement 12-5
Inspecting and changing bulbs 12-8
Inspecting cooling unit filters 12-12
Replacing cooling unit filters 12-16
Testing power converter voltages 12-20
Testing wrist strap grounding cords 12-24

DMS-100 Family Remote Switching Center Multi-Access Maintenance Manual XPM11 and up
vii
About this document
How to check the version and issue of this document
The version and issue of the document are indicated by numbers, for example,
01.01.
The first two digits indicate the version. The version number increases each
time the document is updated to support a new software release. For example,
the first release of a document is 01.01. In the next software release cycle, the
first release of the same document is 02.01.
The second two digits indicate the issue. The issue number increases each
time the document is revised but rereleased inthe same software release cycle.
For example, the second release of a document in the same software release
cycle is 01.02.
To determine which version of this document applies to the software in your
office and how documentation for your product is organized, check the release
information in Product Documentation Directory, 297-8991-001.
References in this document
The following documents are referred to in this document:
•1-Meg Modem Servicoe Network Implementation Guide, 297-8063-200
•North American DMS-100 Log Report Manual
•North American DMS-100 Translations Guide
•Alarm Clearing Procedures
•Card Replacement Procedures
•XPM Operational Measurements Reference Manual
•PMDEBUG Users Guide, TAM-1001-004
What precautionary messages mean
The types of precautionary messages used in NT documents include attention
boxes and danger, warning, and caution messages.

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297-8223-550 Standard 04.02 November 2000
An attention box identifies information that is necessary for the proper
performance of a procedure or task or the correct interpretation of information
or data. Danger, warning, and caution messages indicate possible risks.
Examples of the precautionary messages follow.
ATTENTION - Information needed to perform a task
DANGER - Possibility of personal injury
WARNING - Possibility of equipment damage
ATTENTION
If the unused DS-3 ports are not deprovisioned before a DS-1/VT
Mapper is installed, the DS-1 traffic will not be carried through the
DS-1/VT Mapper, even though the DS-1/VT Mapper is properly
provisioned.
DANGER
Risk of electrocution
Do not open the front panel of the inverter unless fuses F1,
F2, and F3 have been removed. The inverter contains
high-voltage lines. Until the fuses are removed, the
high-voltage lines are active, and you risk being
electrocuted.
WARNING
Damage to the backplane connector pins
Align the card before seating it, to avoid bending the
backplane connector pins. Use light thumb pressure to
align the card with the connectors. Next, use the levers on
the card to seat the card into the connectors.