AT&T MERLIN LEGEND Operating and safety instructions

AT&T
AT&T 555-610-140
Issue 1
August 1991
MERLIN LEGEND™
Communications System
Installation, Programming,
& Maintenance

Copyright © 1991 AT&T
AT&T 555-610-140
All Rights Reserved
Issue 1
Printed in U.S.A. August 1991
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.
Federal Communications Commission (FCC) and
Canadian Department Of Communications (DOC) Information
For important FCC and DOC interference, registration, and repair
information, see “Customer Support Information” in this book.
Trademarks
Accunet is a registered trademark of AT&T.
Dimension is a registered trademark of AT&T.
Horizon is a registered trademark of AT&T.
Magic on Hold is a registered trademark of AT&T.
Megacom is a registered trademark of AT&T.
MERLIN is a registered trademark of AT&T.
MERLIN LEGEND is a trademark of AT&T.
MERLIN MAIL is a trademark of AT&T.
MLX-10, MLX-10D, MLX-20L, and MLX-28D are trademarks of AT&T.
MultiQuest is a registered trademark of AT&T.
SYSTIMAX is a trademark of AT&T.
MS-DOS is a registered trademark of Microsoft Corporation.
PagePac is a registered trademark of DRACON, a Harris Corporation.
Starset is a registered trademark of Plantronics Corporation.
Supra and StarMate are trademarks of Plantronics Corporation.
UNIX is a registered trademark of UNIX System Laboratories, Inc.
ZoneMate is a trademark of DRACON, a Division of Harris Corporation.
Support Telephone Number
AT&T provides a toll-free customer Helpline (1-800-628-2888)24 hours a
day (U.S.A. only). Call the Helpline, or your authorized dealer, if you need
assistance when installing, programming, or using your system.

ERRATA
MERLIN LEGEND™ Communications System
Installation, Programming, and Maintenance
555-610-140
Ignore all references to the small processor module. The MERLIN LEGEND™ Communications
System offers only one processor module. This processor module is referred to as a large processor
module in this document.
Ignore references to the “small” processor module on the following pages:
Page 1-6, Processor Module.
Page 1-35, System Capacities, first, fourth, and sixth paragraphs.
Pages 1-36 - 1-37, Table 1-8, System Capacities.
Pages 1-38 - 1-40, Table 1-9, Feature Capacities.
Page 2-6, Backboard Requirements.
Page 3-10, Install the Feature Module in the Processor Module, first paragraph.
Appendix C - Page C-1
Ordering Codes Table: The following Price Element Codes (PECs) am not valid:
Small (Analog) - 6141-CUA
Small (Digital) - 6141-CUD
Appendix C - Page C-2
Ordering Codes Table: The following Price Element Codes (PECs) are not valid:
Small (Analog) - 6141-24D
Upgrade from Small to Large 6140-USLA
October 1, 1991

Contents
Customer Support Information
xv
■
■
■
■
■
■
■
■
Support Telephone Number
FCC Electromagnetic Interference Information
DOC Interference Information
FCC Notification and Repair Information
Installation and Operational Procedures
DOC Notification and Repair Information
Security
Warranty and Liability
xv
xv
xv
xvi
xvii
xviii
xxi
xxii
About The Book
xxv
■
■
■
■
■
Related Documentation
xxv
How to Order Books xxvi
Additional Ordering Information
xxviii
Product Safety Labels xxviii
How to Comment on This Book xxviii
i

Contents
1 System Description
1-1
■
■
■
■
■
■
■
■
■
■
■
■
Modes of Operation
System Components
Control Unit
Telephones and Consoles
Adjuncts
Adapters
System Capacities
Data Capabilities
Networking Capabilities
Functional Units
Signal Processing
DS1 Capabilities
1-2
1-4
1-5
1-26
1-34
1-34
1-35
1-41
1-42
1-45
1-47
1-53
2Preparation
2-1
■
■
■
■
■
■
Planning Forms 2-2
Environment 2-5
Space and Location
2-6
Power and Grounding
2-8
Power Surge and Lightning Protection
2-14
Unit Loads 2-15
ii

Contents
3Installation
3-1
■ The Control Unit
■ Channel Service Unit
■ The SMDR Printer and the System
Programming PC
■ Data Adapters
■ System Wiring
■ IROB Protection
■ Telephones and Consoles
■ System Acceptance Test
3-2
3-19
3-45
3-56
3-77
3-102
3-103
3-116
4
Programming Procedures
■ System Programming
■ Programming Procedures
■ Set the Basic System Operating Conditions
■ System Renumbering
■ System Operator Positions
■ Lines and Trunks
■ DS1 Facilities
■ Tie Trunks
■ DID Trunks
■ PRI Facilities
■ Telephones
■ Auxiliary Equipment
■ Optional Telephone Features
■ Optional Operator Features
4-1
4-1
4-11
4-12
4-17
4-22
4-27
4-43
4-52
4-62
4-71
4-97
4-109
4-119
4-132
iii

Contents
Programming Procedures—Continued
■ Optional Group-Assigned Features 4-146
■ System Features 4-173
■ Automatic Route Selection
4-202
■ Night Service
4-215
■ Labeling
4-222
■ Backup, Restore, and Print System
Programming Reports
4-228
5
Maintenance and Troubleshooting
5-1
■ Maintenance
5-1
■ Troubleshooting
5-46
6Adapters, Accessories, and Applications
6-1
■ Adapters
6-1
■ Accessories
6-4
■ Applications
6-8
A Wiring
A-1
■ Wiring Tables
A-2
■ Wiring Diagrams
A-6
iv

Contents
B
Adjuncts
B-1
C
Product Ordering Information
C-1
D
Unit Load Calculation Work Sheet
D-1
E
General Telephone Programming
E-1
■ Programming Methods
E-2
F General Feature Use
F-1
G
Programming Special Characters
G-1
H System Programming
Console Overlay H-1
v

Contents
I System Programming Reports
I-1
J System Programming
Menu Hierarchy J-1
K
Two-Digit Numbering Plan
K-1
L
System Technician’s Run Sheet
L-1
AB Abbreviations
ABB-1
GL Glossary
GL-1
IN Index
IN-1
Illustrations
inside
back
cover
vi

Tables
1 System Description
1-1
1-2
1-3
1-4
1-5
1-6
1-7
1-8
1-9
1-10
1-11
Line/Trunk and Station Modules
Touch-Tone Receiver Requirements
Reusable MERLIN II Line/Trunk and
Station Modules
Reusable MERLIN II Hardware
Analog Multiline Telephones
Single-Line Telephones
Telephones and Adjuncts Not Supported
System Capacities
Feature Capacities
Tie-Trunk Compatibility
Line Compensation Settings
1-9
1-21
1-22
1-24
1-28
1-30
1-32
1-36
1-38
1-52
1-59
2 Preparation
2-1
Required Planning Forms
2-2 Required Planning Forms for
400EM, or 800 DID Modules
2-3 Optional Planning Forms
2-4 Environmental Requirements
2-5 AC Power Requirements
2-2
100D,
2-3
2-3
2-5
2-8
vii

Tables
3
Installation
3-1
3-2
3-3
3-4
3-5
3-6
3-7
3-8
3-9
3-10
3-11
3-12
3-13
3-14
3-15
3-16
3-17
3-18
3-19
3-20
3-21
SW1 Default Settings
3-21
SW2 Default Settings 3-22
SW4 Default Settings 3-23
SW5 Default Settings 3-24
SW6 Default Settings 3-25
SW7 Settings
3-26
SW2 BER Options 3-27
Switch Settings in Hybrid/PBX Mode:
Network and Equipment are ESF Framed 3-28
Switch Settings in Hybrid/PBX Mode:
Network and Equipment are D4 Framed
3-28
Switch Settings in Hybrid/PBX Mode:
Network is ESF Framed and Equipment
is D4 Framed 3-29
Switch Settings in Hybrid/PBX Mode:
Network is D4 Framed and Equipment
is ESF Framed
3-29
Artificial Transmit Line Options
3-31
100D Module Pin Assignments 3-32
Wire-Wrap Connector Pin Assignments
3-32
DTE 15-Pin Connector Pin Assignments 3-33
Network 15-Pin Connector Pin Assignments 3-34
CSU Front Panel LEDs 3-35
CSU Front-Panel Controls 3-36
CSU Front-Panel Test Jacks 3-37
SMU Switch Settings 3-39
OR Power Mode Option Settings 3-40
viii

Tables
3-22
3-23
3-24
3-25
3-26
3-27
3-28
3-29
3-30
3-31
3-32
3-33
3-34
OR Artificial Line Options
3-40
SMU Front-Panel LEDs 3-42
SMU Front Panel Test Jacks 3-42
CSU Rear Panel Pin Assignments 3-44
AT&T 572 Printer Options 3-47
AT&T 475/476 Printer DIP Switch Settings
3-49
ISDN 7500B Data Module Option Settings
for Digital-to-Analog Modem Pool Operation 3-72
Modem Option Setting for Digital-to-Analog
Modem Pool Operation
3-73
ISDN 7500B Data Module Option Settings for
Analog-to-Digital Modem Pool Operation
3-74
Modem Option Setting for Analog-to-Digital
Modem Pool Operation 3-75
Network Interfaces
3-79
CO Network Interface Codes
3-80
Insert Labels 3-97
4 Programming
Procedures
4-1
SPM Main Menu Options 4-4
4-2 System Programming Menu Options 4-5
4-3
Commands Using Fixed Buttons
4-8
4-4
Commands Appearing on the Screen
4-9
4-5
Commands Applicable Only to SPM
4-10
ix

Tables
5 Maintenance and Troubleshooting
5-1 Line/Trunk Errors 5-44
5-2 Maintenance Problems and Solutions 5-46
6 Adapters, Accessories, and
6-1
TTRs Required by VMS
6-2 Voice Channels Required
6-3 Number of Attendants
6-4 MERLIN MAIL Ports Required 6-32
Applications
6-10
6-23
6-28
A Wiring
A-1
LS, GS/LS, DID, and OPT 6-Position
Jacks A-2
A-2
Tie-Trunk and DS1/PR1 8-Position Jacks A-2
A-3 Tie-Line Jack to RJ2GX Network
Interface
A-3
A-4
T/R, Analog Multiline Telephone, and MLX
8-Position Station Jacks A-4
A-5
Eight-Pin RS-232 Flow Control Cable
A-5
B
Adjuncts
B-1 Adjunct Types and Specifications
B-2
x

CUSTOMER WARNING
This manual is designed for use by qualified service
technicians only.
Technician qualification includes completion
of an AT&T hands-on instructor-led course covering installation
and maintenance for this product. Installation or maintenance of
this product by anyone other than a qualified service technician
may void the warranty.
Hazardous electrical voltages are
present inside this product
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.
IMPORTANT SAFETY INSTRUCTIONS
When installing telephone equipment, basic safety
precautions should always be followed to reduce the risk of
fire, electric 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.
xi

■ Never install telephone jacks 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 AT&T manufactured MERLIN LEGEND™ Com-
munications System circuit modules, carrier assemblies,
and power units in the MERLIN LEGEND Communications
System (511A) control unit.
■ Use only AT&T-recommended/approved MERLIN LEGEND
Communications System accessories.
■ If equipment connected to the analog station modules
(008/408/408 GS/LS) or to the MLX telephone module (008
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 electric shock.
■ The MERLIN LEGEND Communications System is
equipped with a three-wire grounding-type plug, a plug
having 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.
xii

■ 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 electric shock. Never spill liquid of
any kind on this product.
■ Unplug this product from the wall outlet before cleaning.
Do not use liquid or aerosol cleaners on this product. Use
a damp cloth for cleaning.
xiii

Customer Support
Information
Support Telephone Number
AT&T provides a toll-free customer Helpline (1-800-628-2888)24 hours a
day (U.S.A. only). Call the Helpline, or your authorized dealer, if you need
assistance when installing, programming, or using your system.
Federal Communications Commission (FCC)
Electromagnetic Interference Information
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.
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.
Customer Support Information xv

Customer Support Information
Le présent appareil numérique n'émet pas de bruits radioélectriques
dépassant les limites applicable aux appareils numériques de la classe A
prescrites dans le Règlement sur le brouillage radioélectrique édicté par le
ministère des Communications du Canada.
FCC Notification and Repair Information
This equipment is registered with the FCC in accordance with Part 68 of its
rules. In compliance with those rules, you are advised of the following:
■ Means of Connection. Connection of this equipment to the telephone
network shall be through a standard network interface jack: USOC
RJ11C, RJ14C, RJ21X. Connection to E&M tie trunks requires a USOC
RJ2GX. Connection to off-premises stations requires a USOC RJ11C or
RJ14C. Connection to 1.544 Mbs digital facilities must be through a
USOC RJ48C or RJ48X. Connection to DID requires a RJ11C, RJ14C or
RJ21X. These USOCs must be ordered from your telephone company.
This equipment may not be used with party lines or coin telephone lines.
■ Notification to the Telephone Companies. Before connecting this
equipment, you or your equipment supplier must notify your local
telephone company’s business office of the following:
■
■
■
■
■
■
■
The telephone number(s) you will be using with this equipment.
The appropriate registration number and ringer equivalence number
(REN), which can be found on the back or bottom of the control unit
is as follows:
If this equipment is to be used as Key System, report the
following number AS593M-72914-KF-E and if the system
provides both manual and automatic selection of incoming/
outgoing access to the network, report AS593M-72682-MF-E.
The ringer equivalence number for both systems is 1.5A.
For tie-line connection, provide the telephone company the facility
interface code (FIC) of TL31M and the service order code (SOC)
9.0F.
For connection to off-premises stations, report the FIC OL13C and
SOC 9.0F.
If this equipment is to be connected to digital service (1.544 Mbs),
the FIC is 04DU9-B for D4 framing format or 04DU9-C for extended
framing format, and SOC 6.0P.
If this equipment is to be connected to DID facilities, the FIC is
02RV2-T, and the SOC is 9.0F.
The quantities and USOC numbers of the jacks required for each
jack provide the sequence in which lines are to be connected: the
type lines, the FIC, and REN by position when applicable.
xvi Customer Support Information

Customer Support Information
You must also notify your local telephone company if and when this
equipment is permanently disconnected from the line(s).
The REN is used to determine the quantity of devices which maybe
connected to the telephone line. Excessive REN’s on the telephone line
may result in the devices not ringing in response to an incoming call. In
most, but not all, areas the sum of the REN’s should not exceed five
(5.0). To be certain of the number of devices that maybe connected to
the line, as determined by the total REN’s, contact the telephone
company to determine the maximum REN for the calling area.
Installation and Operational Procedures
The manuals for your system contain information about installation and
operational procedures.
■ Repair Instructions. If you experience trouble because your equipment
is malfunctioning, the FCC requires that the equipment not be used and
that it be disconnected from the network until the problem has been
corrected. Repairs to this equipment can be made only by the
manufacturers, their authorized agents, or by others who maybe
authorized by the FCC. In the event repairs are needed on this
equipment, please contact the National Service Assistance Center
(NSAC) at 1-800-628-2888, or your authorized AT&T dealer.
■ Rights of the Local Telephone Company. If this equipment causes
harm to the telephone network, the local telephone company may
discontinue your service temporarily. If possible, they will notify you in
advance. But if advance notice is not practical, you will be notified as
soon as possible. You will also be informed of your right to file a
complaint with the FCC.
Your local telephone company may make changes in its facilities,
equipment operations, or procedures that affect the proper functioning
of this equipment. If they do, you will be notified in advance to give you
an opportunity to maintain uninterrupted telephone service.
■ Hearing Aid Compatibility. The custom telephone sets for this system
are compatible with inductively coupled hearing aids as prescribed by
the FCC.
■ Automatic Dialers. WHEN PROGRAMMING EMERGENCY NUMBERS
AND/OR MAKING TEST CALLS TO EMERGENCY NUMBERS:
■ Remain on the line and briefly explain to the dispatcher the reason
for the call.
■ Perform such activities in the off-peak hours, such as early morning
or late evening.
Customer Support Information xvii