Lucent Technologies MERLIN LEGEND Release 5.0 Operating instructions

MERLIN LEGEND®
Communications System
Release 5.0
Maintenance and Troubleshooting
555-650-140
Comcode 108005729
Issue 1
June 1997

Notice
Every effort was made to ensure that the information in this book was complete and accurate at the time of printing.
However, information is subject to change.
See Appendix A, “Customer Support Information,” for important information. It follows
Maintenance and
Troubleshooting
in this binder.
Your Responsibility for Your System’s Security
Toll fraud is the unauthorized use of your telecommunications system by an unauthorized party, for example,
persons other than your company’s employees, agents, subcontractors, or persons working on your company’s
behalf. Note that there may be a risk of toll fraud associated with your telecommunications system, and if toll fraud
occurs, it can result in substantial additional charges for your telecommunications services.
You and your system manager are responsible for the security of your system, such as programming and
configuring your equipment to prevent unauthorized use. The system manager is also responsible for reading all
installation, instruction, and system administration documents provided with this product in order to fully understand
the features that can introduce risk of toll fraud and the steps that can be taken to reduce that risk. Lucent
Technologies does not warrant that this product is immune from or will prevent unauthorized use of common-carrier
telecommunication services or facilities accessed through or connected to it. Lucent Technologies will not be
responsible for any charges that result from such unauthorized use. For important information regarding your
system and toll fraud, see Appendix A, “Customer Support Information.”
Federal Communications Commission Statement
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful
interference, in which case the user will be required to correct the interference at his own expense. For further FCC
information, see Appendix A, “Customer Support Information.”
Canadian Department of Communications (DOC)
Interference Information
This digital apparatus does not exceed the Class A limits for radio noise emissions set out in the radio interference
regulations of the Canadian Department of Communications.
Le Présent Appareil Numérique n’émet pas de bruits radioélectriques dépassant les limites applicables aux
appareils numériques de la classe A préscrites dans le réglement sur le brouillage radioélectrique édicté par le
ministère des Communications du Canada.
Trademarks
5ESS, ACCUNET, ACCULINK, CONVERSANT, DEFINITY, Magic On Hold, Megacom, MERLIN, MERLIN II,
MERLIN LEGEND, MERLIN MAIL, MultiQuest, Music on Hold, PassageWay, and Systimax are registered trade-
marks and 4ESS, Lucent Technologies Attendant, AUDIX Voice Power, FAX Attendant System, HackerTracker,
MERLIN Identifier, MLX-5, MLX-5D, MLX-10, MLX-10D, MLX-10DP, MLX-16DP, MLX-20L, and MLX-28D, are trade-
marks of Lucent Technologies in the US and other countries.
Microsoft and Windows are registered trademarks of Microsoft Corporation.
ProComm and ProComm Plus are registered trademarks of DataStorm Technologies, Inc.
Supra, StarSet, and Mirage are registered trademarks of Plantronics, Inc.
UNIX is a registered trademark of UNIX System Laboratories, Inc.
PagePac is a registered trademark of DRACON, a division of Harris Corporation.
Okidata is a registered trademark of Okidata Corporation.
NORTEL is a registered trademark and DMS a trademark of Northern Telecom.
MCI, Prism, and Vnet are registered trademarks of MCI Communications Corporation.
Copyright ©1997, Lucent Technologies 555-650-140
All Rights Reserved Issue 1
Printed in USA June 1997

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140
Issue 1
June 1997
Contents
Page iii
Contents
Contents iii
IMPORTANT SAFETY INSTRUCTIONS vii
About This Book xi
■Intended Audience xi
■How to Use This Book xi
■Terms and Conventions Used xiii
■Product Safety Labels xiv
■Security xv
■Related Documents xvi
■How to Comment on This Document xvii
1 Introduction 1-1
■Equipment 1-1
■On-Site Programming Maintenance 1-3
■Remote Programming Maintenance 1-7
■Using SPM 1-9
■Preparation for Hardware Maintenance 1-18
■Maintenance Strategy 1-20
■Unit Loads 1-30
2 Error Logs, Access Logs, and System Inventory 2-1
■Error Logs 2-1
■Access Log 2-24
■System Inventory 2-26
3 Telephone Problems 3-1
■Fixing Telephone Problems 3-2
■MLX Telephone Tests 3-6

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140
Issue 1
June 1997
Contents
Page iv
■System Requirements
for Touch-Tone Receivers 3-8
4 Control Unit Problems 4-1
■Backing Up System Programming 4-1
■Power Supply Problems 4-2
■Processor Problems 4-12
■Module Problems 4-34
■800 NI-BRI Module Problems 4-78
■100D Module Problems 4-103
■CTI Link Problems 4-118
■Removing a CTI Link 4-130
■Carrier Problems 4-132
■Checking System and Slot Status 4-134
5 Central Office Problems 5-1
■Trunk Errors 5-1
■Checking Ports 5-8
■Conclusion of Hardware Maintenance 5-41
A Customer Support Information A-1
■Support Telephone Number A-1
■Federal Communications
Commission (FCC) Electromagnetic
Interference Information A-2
■Canadian Department of Communications (DOC)
Interference Information A-2
■FCC Notification
and Repair Information A-3
■Installation
and Operational Procedures A-5
■DOC Notification
and Repair Information A-7

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140
Issue 1
June 1997
Contents
Page v
■Renseignements sur la notification
du ministère des Communications
du Canada et la réparation A-9
■Security of Your System:
Preventing Toll Fraud A-12
■Toll Fraud Prevention A-14
■Other Security Hints A-22
■Limited Warranty
and Limitation of Liability A-28
■Remote Administration
and Maintenance A-30
B System Numbering Forms B-1
■Form 2a, System Numbering: Extension Jacks B-2
■Form 2b, System Numbering: Digital Adjuncts B-4
■Form 2c, System Numbering: Line/Trunk Jacks B-5
■Form 2d, System Numbering: Special Renumbers B-6
C Unit Load Calculation Worksheet C-1
■Unit Load Worksheet C-2
D Backing Up with a Memory Card D-1
■Card Types D-2
■Memory Card Formatting D-5
■Backup D-7
■Automatic Backup D-12
■Restore D-20
E Modifying A Release 2.1 or Earlier
Processor Key Mode E-1
F NI-1 BRI Provisioning F-1
■Lucent Technologies 5ESS Switch Translations F-2
■Northern Telecom DMS-100 Switch Translations F-20

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140
Issue 1
June 1997
Contents
Page vi
■Siemens SSC EWSD Switch Translations F-32
GL Glossary GL-1
IN Index IN-1

IMPORTANT SAFETY INSTRUCTIONS
Page vii
MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
Issue 1
June 1997
MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140 Issue 1 June 1997
IMPORTANT SAFETY INSTRUCTIONS
The exclamation point in an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in the
literature accompanying the product.
When installing telephone equipment, always follow basic safety precautions to
reduce the risk of fire, electrical shock, and injury to persons, including:
■Read and understand all instructions.
■Follow all warnings and instructions marked on or packed with the
product.
■Never install telephone wiring during a lightning storm.
■Never install a telephone jack in a wet location unless the jack is
specifically designed for wet locations.
■Never touch uninsulated telephone wires or terminals unless the
telephone wiring has been disconnected at the network interface.
■Use caution when installing or modifying telephone lines.
■Use only Lucent Technologies-manufactured MERLIN LEGEND
Communications System circuit modules, carrier assemblies, and power
units in the MERLIN LEGEND Communications System control unit.

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140 Issue 1
June 1997
IMPORTANT SAFETY INSTRUCTIONS
Page viii
■Use only Lucent Technologies-recommended/approved MERLIN
LEGEND Communications System accessories.
■If equipment connected to the analog extension modules (008, 408, 408
GS/LS) or to the MLX telephone modules (008 MLX, 408 GS/LS-MLX) is
to be used for in-range out-of-building (IROB) applications, IROB
protectors are required.
■Do not install this product near water, for example, in a wet basement
location.
■Do not overload wall outlets, as this can result in the risk of fire or
electrical shock.
■The MERLIN LEGEND Communications System is equipped with a
3-wire grounding-type plug with a third (grounding) pin. This plug will fit
only into a grounding-type power outlet. This is a safety feature. If you
are unable to insert the plug into the outlet, contact an electrician to
replace the obsolete outlet. Do not defeat the safety purpose of the
grounding plug.
■The MERLIN LEGEND Communications System requires a
supplementary ground.
■Do not attach the power supply cord to building surfaces. Do not allow
anything to rest on the power cord. Do not locate this product where the
cord will be abused by persons walking on it.
■Slots and openings in the module housings are provided for ventilation.
To protect this equipment from overheating, do not block these openings.
■Never push objects of any kind into this product through module
openings or expansion slots, as they may touch dangerous voltage
points or short out parts, which could result in a risk of fire or electrical
shock. Never spill liquid of any kind on this product.
■Unplug the product from the wall outlet before cleaning. Use a damp
cloth for cleaning. Do not use cleaners or aerosol cleaners.

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140 Issue 1
June 1997
IMPORTANT SAFETY INSTRUCTIONS
Page ix
■Auxiliary equipment includes answering machines, alerts, modems, and
fax machines. To connect one of these devices, you must first have a
Multi-Function Module (MFM).
■Do not operate telephones if chemical gas leakage is suspected in the
area. Use telephones located in some other safe area to report the
trouble.
!
WARNING:
!
■ For your personal safety, DO NOT install an MFM yourself.
■ ONLY an authorized technician or dealer representative shall install, set
options, or repair an MFM.
■ To eliminate the risk of personal injury due to electrical shock, DO NOT
attempt to install or remove an MFM from your MLX telephone. Opening
or removing the module cover of your telephone may expose you to
dangerous voltages.
SAVE THESE INSTRUCTIONS

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140 Issue 1
June 1997
IMPORTANT SAFETY INSTRUCTIONS
Page x

About This Book
Page xi
Intended Audience
MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
Issue 1
June 1997
MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140 Issue 1 June 1997
About This Book
The MERLIN LEGEND®Communications System is an advanced digital
switching system that integrates voice and data communications features.
Voice features include traditional telephone features, such as Transfer and
Hold, and advanced features, such as Group Coverage and Park. Data features
allow both voice and data to be transmitted over the same system wiring.
Intended Audience
This book provides detailed information about system and telephone trouble
reports and troubleshooting operations. It is intended for use by qualified field
technicians who are responsible for system maintenance and troubleshooting,
and as a reference by anyone needing such information, including support
personnel, sales representatives, and account executives.
How to Use This Book
This book provides step-by-step procedures for isolating troubles both inside
and outside the communications system. Refer to the chapter associated with
the reported problem to start the troubleshooting procedure.

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140 Issue 1
June 1997
About This Book
Page xii
How to Use This Book
Refer to the following documentation for additional information:
■ Equipment and Operations Reference provides detailed information on
system hardware, telephones, and other equipment. (Not updated since
Release 3.0).
■ Feature Reference provides details on the features of the
communications system.
■ System Planning provides procedures and forms for planning a system
for installation.
■ System Programming gives procedural instructions for programming
system features.
■Users’ guides and Operators’ Guides give procedural instructions for
programming and using telephone features.
“Related Documents,” later in this section, provides a complete list of system
documentation together with ordering information.
In the USA only, Lucent Technologies provides a toll-free customer Helpline (1
800 628-2888) 24 hours a day. Call the Helpline, or your Lucent Technologies
representative, if you need assistance when installing, programming, or using
your system.

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140 Issue 1
June 1997
About This Book
Page xiii
Terms and Conventions Used
Terms and Conventions Used
In this document, the terms in the following list are used in preference to other,
equally acceptable terms for describing communications systems.
Lines, Trunks and Facilities
Facility is a general term that designates a communications path between a
telephone system and the telephone company central office. Technically a
trunk
connects a switch to a switch, for example the MERLIN LEGEND
Communications System to the central office. Technically, a
line is a loop-start
facility or a communications path that does not connect two switches (for
example, an intercom line or a Centrex line). However, in actual usage, the
terms
line and trunk are often applied interchangeably. In this book, we use
line/trunk and lines/trunks to refer to facilities in general. Specifically, we refer to
digital facilities . We also use terms such as personal line, ground-start trunk,
Direct Inward Dialing (DID) trunk, and so on. When you talk to your local
telephone company central office, ask them which terms they use for the
specific facilities they connect to your system.
Some older terms have been replaced with newer terms. The following list
shows the old term on the left and the new term on the right:
trunk module line/trunk module
trunk jack line/trunk jack
station extension
station jack extension jack
analog data station modem data station
digital data station terminal adapter
7500B data station terminal adapter
analog voice and analog data station analog voice and modem data
digital voice and analog data station MLX voice and modem data
analog data only station modem data only station
digital data only station terminal adapter only station
7500B data only station terminal adapter only station
digital voice and digital data station MLX voice and terminal
adapter station

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140 Issue 1
June 1997
About This Book
Page xiv
Product Safety Labels
MLX voice and 7500B data station MLX voice and terminal
adapter station
Typographical Conventions
Certain type fonts and styles act as visual cues to help you rapidly understand
the information presented:
Product Safety Labels
Throughout these documents, hazardous situations are indicated by an
exclamation point inside a triangle and the word CAUTION or WARNING.
Example Purpose
It is
very important that you follow
these steps. You
must attach the
wristband before touching the
connection.
Italics indicate emphasis.
The part of the headset that fits over
one or both ears is called a
headpiece .
Italics also set off special terms.
If you press the Feature button on an
MLX display telephone, the display
lists telephone features you can
select. A programmed Auto Dial
button gives you instant access to an
inside or outside number.
The names of fixed-feature,
factory-imprinted buttons appear in bold.
The names of programmed buttons are
printed as regular text.
Choose Ext Prog from the display
screen. Plain constant-width type indicates text that appears on the telephone display or
personal computer (PC) screen.
To activate Call Waiting, dial *11. Constant-width type in italics indicates
characters you dial at the telephone or
type at the PC.

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140 Issue 1
June 1997
About This Book
Page xv
Security
!
WARNING:
!
Warning indicates the presence of a hazard that could cause death or
severe personal injury if the hazard is not avoided.
!CAUTION:
Caution indicates the presence of a hazard that could cause minor
personal injury or property damage if the hazard is not avoided.
Security
Certain features of the system can be protected by passwords to prevent
unauthorized users from abusing the system. You should assign passwords
wherever you can and limit knowledge of such passwords to three or fewer
people.
Nondisplaying authorization codes and telephone numbers provide another
layer of security. For more information, see Appendix A, “Customer Support
Information” following
Maintenance and Troubleshooting .
Throughout this document, toll fraud security hazards are indicated by an
exclamation point inside a triangle and the words Security Alert.
!Security Alert:
Security Alert indicates the presence of a toll fraud security hazard.
Toll fraud is the unauthorized use of your telecommunications system
by an unauthorized party (for example, persons other than your
company’s employees, agents, subcontractors, or persons working on
your company’s behalf). Be sure to read “Your Responsibility for Your
System’s Security” on the inside front cover of this book and “Security
of Your System: Preventing Toll Fraud” in Appendix A, “Customer
Support Information.”

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140 Issue 1
June 1997
About This Book
Page xvi
Related Documents
Related Documents
In addition to this book, the documents listed below are part of the
documentation set. Within the continental United States, these documents can
be ordered from the Lucent Technologies BCS Publications Center by calling
1 800 457-1235.
Document No. Title
System Documents
555-650-110
Feature Reference
555-650-111 System Programming
555-650-112 System Planning
555-650-113 System Planning Forms
555-650-116 Pocket Reference
555-650-118 System Manager’s Guide
Telephone User Support
555-650-122
MLX-5D*, MLX-10D*, MLX-10DP*, MLX-28D*, and
MLX-20L* Display Telephones User’s Guide
555-630-150 MLX-5D, MLX-10D and MLX-10DP Display Telephone
Tray Cards (5 cards)
555-630-152 MLX-28D and MLX-20L Telephone Tray Cards (5 cards)
555-650-124 MLX 10* Nondisplay Telephone User’s Guide
555-630-151 MLX-5 and MLX 10 Nondisplay Telephone Tray Cards
(6 cards)
555-630-155 MLX-16DP Display Telephone Tray Cards (5 cards)
555-650-120 Analog Multiline Telephones User’s Guide
555-650-126 Single-Line Telephones User’s Guide
555-650-138 MDC 9000 and MDW 9000 Telephones User's Guide
System Operator Support
555-650-134 MLX Direct-Line Consoles Operator’s Guide
555-650-132 Analog Direct-Line Consoles Operator’s Guide
555-650-136 MLX Queued Call Console Operator’s Guide
Miscellaneous User Support
555-650-130
Calling Group Supervisor’s Guide
555-640-105 Data and Video Reference

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140 Issue 1
June 1997
About This Book
Page xvii
How to Comment on This Document
How to Comment on This Document
We welcome your comments, both positive and negative. Please use the
feedback form on the next page to let us know how we can continue to serve
you. If the feedback form is missing, write directly to:
Documentation Manager
Lucent Technologies
211 Mount Airy Road
Room 2W226
Basking Ridge, NJ 07920
Document No. Title
Documentation for Qualified Technicians
555-650-140
Installation, Programming & Maintenance (IP&M) Binder
[ consists of Installation, System Programming &
Maintenance (SPM), Maintenance & Troubleshooting
]
Toll Fraud Security
555-025-600
BCS Products Security Handbook

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140 Issue 1
June 1997
About This Book
Page xviii
How to Comment on This Document

Introduction
Page 1-1
Equipment
MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
Issue 1
June 1997
MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140 Issue 1 June 1997
1
1Introduction
The purpose of maintenance is to detect, report, and clear problems quickly
with minimal disruption of service. The system attempts to isolate each problem
to a single replaceable unit, whenever possible, by running automatic tests.
Errors that it cannot automatically correct are usually recorded in error logs.
Most troubleshooting relies on checking the error logs and interpreting them,
using Table 2-2, "Error Codes", in Chapter 2.
Equipment
To perform maintenance, you need a maintenance terminal and some
additional tools, all of which are defined below.
Maintenance Terminal
Whether you perform on-site or remote maintenance, you need a maintenance
terminal:
■For on-site maintenance, you can use either an MLX-20L system
console or a PC with System Programming and Maintenance (SPM)
software.
■For remote maintenance, you must use a PC with SPM software.

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140 Issue 1
June 1997
Introduction
Page 1-2
Equipment
Detailed information about system programming is included in System
Programming
and in System Programming and Maintenance (SPM).
You can use either a DOS PC or a Master Controller (MCII or MCIII) to run
SPM. To connect a PC to the control unit, you need a 355AF adapter and a
D8W-87 cord.
NOTE:
On-site programming maintenance is preferred if it is feasible; remote
programming overrides on-site programming, except when on-site backup
or restore is in progress. See ‘‘On-Site Programming Maintenance’’ and
‘‘Remote Programming Maintenance’’, later in this chapter, for details.
Tools
In addition to the maintenance terminal, you need the following tools:
■EIA breakout box
■Digital voltmeter (KS-20599 or equivalent)
■110/66-type punchdown tool
■Dracon TS21 or equivalent touch-tone telephone for testing
■Assorted flathead and Phillips-head screwdrivers
■Long-nosed and regular pliers
■Wrist grounding strap
■Replacement parts recommended by your technical support organization
!CAUTION:
Should you ever need to open a module and handle the circuit board, use
the wrist strap to connect your wrist to a suitable ground first. Electrostatic
discharge can destroy or severely damage the integrated circuits in the
power supply, processor, and modules.