Nortel DMS-100 Series Manuale utente

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

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 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

iv Contents

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.

viii

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.

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