AT&T MERLIN LEGEND Release 2.0 Analog Multiline... Technical Document

AT&T 555-620-115
Issue 1
October 1992
MERLIN LEGENDTM
Communications System
Release 2.0
Equipment and Operations Reference

Copyright © 1992 AT&T
All Rights Reserved
Printed in U.S.A.
AT&T 555-620-115
Issue 1
October 1992
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)
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.
Le Présent Appareil Numérique n'émet pas de bruits radioélectriques dépassant Ies Iimites applicable
aux appareils numériques de la class A prescribes clans Ie Réglement sur Ie brouillage radioélectrique
édicté par Ie ministère des Communications du Canada.
Trademarks
5ESS, ACCUNET, CONVERSANT, Dimension, Horizon, Magic On Hold, MEGACOM, MERLIN, SYSTIMAX,
and MultiQuest are registered trademarks and 4ESS, AUDIX Voice Power, FAX Attendant System,
InnManager, MERLIN LEGEND, MERLIN MAIL, MLX-10, MLX-10D, MLX-20L, MLX-28D, and MERLIN PFC
are trademarks of AT&T in the U.S. and other countries.
Intel is a registered trademark of Intel Corporation.
MS-DOS is a registered trademark of Microsoft Corporation.
UNIX is a registered trademark of UNIX System Laboratories, Inc.
PagePac is a registered trademark and ZoneMate is a trademark of DRACON, a division of Harris
Corporation.
Mirage, StarSet, Supra, and Supra NC are registered trademarks of Plantronics, Inc.
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 the
system.

Contents
About This Book
1
■ Terms and Conventions Used
2
■ Product Safety Labels
3
■ Security
3
■ Related Documents
3
■ How to Comment on This Document
5
1 Introduction
1-1
■ Components
1-2
■ Functional Description
1-9
■ Modes of Operation 1-12
■ Programming
1-30
■ System Capacities and Requirements
1-33
■ Release Differences
1-43
2 Hardware Components
2-1
■ Control Unit
2-1
■ Telephones and Consoles
2-13
■ Adapters and Adjuncts
2-28
■ Power-Related Hardware
2-51
3 Lines and Trunks
3-1
■ Loop-Start Lines/Trunks
3-1
■ Ground-Start Lines/Trunks
3-2
■ Tie Trunks
3-2
■ Direct Inward Dialing (DID) Lines/Trunks
3-11
■ DS1 Facilities
3-16
Table of Contents i

Contents
4 Applications
4-1
■ Voice Messaging Systems
■ MERLIN MAIL Voice Messaging System
■ MERLIN Attendant
■ Call Accounting System (CAS)
■ Call Accounting Terminal (CAT)
■ Call Management System (CMS)
■ InnManager Guest Management System
■ System Programming and Maintenance (SPM)
■ Integrated Solution II (IS II)
■ Integrated Solution Ill (IS Ill)
■ Primary Rate Interface (PRI) Applications
■ Centrex Operation
■ MERLIN PFC Telephone
■ Automated Document Delivery System (ADDS)
■ CONVERSANT Intro
■ Applications Printers
4-4
4-9
4-16
4-20
4-23
4-26
4-30
4-31
4-33
4-40
4-50
4-52
4-56
4-58
4-60
4-62
5
Data Communications Support
5-1
■ Data Communications Configuration Overview
5-2
■ Outside Trunks 5-13
■ System Features Used For Data
5-16
■ Endpoint Communications Features
5-18
■ PRI Applications 5-18
ii
Table of Contents

Contents
A
Product Ordering Information
A-1
GL
Glossary
GL-1
IN
Index
IN-1
Table of Contents
.
iii

Contents
iv Table of Contents

Figures
1 Introduction
Figure 1-1.
Figure 1-2.
Figure 1-3.
Figure 1-4.
Figure 1-5.
Figure 1-6.
Figure 1-7.
Figure 1-8.
System Components 1-6
Functional Units 1-10
Lines Labeled for Key System Telephones 1-15
Lines Labeled for Modified Key System
Telephones
1-17
Hybrid/PBX Mode
1-19
Behind Switch Mode 1-23
Behind Switch Mode with Direct Outside
Trunks
1-24
Labeled Line Buttons for Behind Switch
Telephones
1-25
2 Hardware Components
Figure 2-1, Carriers
Figure 2-2.
Processor Module
Figure 2-3.
Power Supply
Figure 2-4.
Line/Trunk and Station Modules
Figure 2-5.
Control Unit Cover
Figure 2-6. MLX-28D Telephone
Figure 2-7.
MLX-20L Telephone
Figure 2-8.
MLX-10D Telephone
Figure 2-9. MLX-10 Telephone
Figure 2-10. Direct Station Selector
Figure 2-11. 551 T1 L1 Channel Service Unit Connections
Figure 2-12, ESF T1 Channel Service Unit Connections
Figure 2-13. Multi-Function Module
Figure 2-14. GPA Connections
Figure 2-15. 7500B Data Module Front Panel
Figure 2-16. 7500B Data Module Back Panel
Figure 2-17. SAA Connections
Figure 2-18. Headsets
Figure 2-19. Analog Multi line Telephone Headset
Figure 2-20. Analog IROB Connection
Figure 2-21, MLX IROB Connection
2-2
2-3
2-4
2-6
2-10
2-15
2-16
2-17
2-18
2-19
2-32
2-33
2-34
2-36
2-38
2-39
2-43
2-48
2-49
2-54
2-55
Table of Contents v

Figures
Figure 2-22.
Figure 2-23.
Figure 2-24.
Figure 2-25.
Surge Protectors 2-57
Trouble Alarm Connections
2-59
Power Failure Alarm Connections 2-59
Power Failure DID Busy-Out Connections
2-60
3
Lines and Trunks
Figure 3-1.
Setting the 400EM Module DIP Switches for
E&M Signaling Types 1C and 5
3-6
Figure 3-2. Nontandem Tie-Trunk Network
3-11
5 Data Communications Support
Figure 5-1. Individual Use Data Station Configurations
5-3
Figure 5-2. Direct RS-232 Interface 5-20
Figure 5-3. RS-232 to V.35 Interface Conversion
5-22
Figure 5-4.
Direct V.35 Interface 5-24
Figure 5-5. Video Conferencing Connections
5-26
vi Table of Contents

Tables
1 Introduction
Table 1-1, Modes of Operation Summary
1-12
Table 1-2. FCC Registration Numbers
1-28
Table 1-3.
Hardware and Software Capacities
1-34
Table 1-4.
Environmental Specifications
1-37
2 Hardware Components
Table 2-1.
Table 2-2.
Table 2-3.
Table 2-4,
Table 2-5.
Table 2-6.
Table 2-7.
Table 2-8.
Table 2-9.
Line/Trunk and Station Modules
Reusable MERLIN II Modules
Reusable MERLIN II Hardware
Analog Multiline Telephones
Single-Line Telephones
Telephones and Adjuncts Not Supported
Maximum Number of System Operator
Positions
Adjunct Summary
Local Auxiliary Power Requirements
2-7
2-11
2-12
2-21
2-22
2-23
2-24
2-28
2-52
3
Lines and Trunks
Table 3-1.
Setting the 400EM Module DIP Switches
3-7
Table 3-2. Sample DIP Switches for the 400EM Module
3-7
Table 3-3. Tie-Trunk Compatibility 3-9
Table 3-4.
Type 1 Standard and Type 1 Compatible
E&M Switch Settings
3-1o
Table 3-5.
Line Compensation Settings
3-20
4 Applications
Table 4-1.
Application Capacities and Modes of
Operation
4-3
Table 4-2.
Mode Codes
4-6
Table 4-3. TTRs Required by Voice Messaging Systems 4-7
Table 4-4. MERLIN MAIL Voice Messaging System
Ports Required
4-15
Table of Contents
vii

Tables
Table 4-5. MERLIN Attendants Required
4-19
Table 4-6. Voice Channels Required
4-35
Table 4-7.
Voice Channels Required
4-49
Table 4-8. Applications Printers
4-62
5
Data Communications Support
Table 5-1.
Configurations of Data Stations
5-9
viii Table of Contents

he 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, 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 AT&T-manufactured MERLIN LEGEND™ Communications
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 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
three-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.
ix

■ 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. 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).
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

Customer Support Information
Support Telephone Number
In the U.S.A. only, AT&T provides a toll-free customer Helpline
(1-800-628-2888) 24 hours a day. Call the Helpline, or your authorized dealer, if
you need assistance when installing, programming, or using your system.
Outside the U. S. A., if you need assistance when installing, programming, or
using your system, contact your authorized
AT&T dealer.
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,
Le Présent Appareil Numérique n'émet pas de bruits radioelectriques
depassant Ies Iimites applicable aux appareils numériques de la class A
prescribes clans Ie reglement sur Ie brouillage radioelectrique edicté par Ie
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:
Customer Support Information xi

Customer Support Information
■ 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-Mbps digital facilities must
be through a USOC RJ48C or RJ48X. Connection to DID requires a
USOC 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, as follows:
If this equipment is to be used as Key System, report the
number AS593M-72914-KF-E.
If the system provides both manual and automatic selection
of incoming/outgoing access to the network, report the
number AS593M-72682-MF-E.
If there are no directly terminated trunks, or if the only
directly terminated facilities are personal lines, report the
number AS5USA-65646-PF-E.
The REN for all three systems is 1.5A.
—For tie line connection, the facility interface code (FIC) is TL31 M
and the service order code (SOC) is 9.0F.
—For connection to off-premises stations, the FIC is OLI3C and
the SOC is 9.0F.
—For equipment to be connected to 1.544-Mbps digital service,
the FIC is 04DU9-B for D4 framing format or 04DU9-C for
extended framing format, and the SOC is 6.0P.
—For equipment 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, the sequence in which lines are to be connected:
the line types, the FIC, and the REN by position when applicable.
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 number of devices that may be
connected to the telephone line. Excessive RENs on the line may result
in the devices not ringing in response to an incoming call. In most, but
not all, areas the sum of the RENs should not exceed five (5.0). To be
certain of the number of devices that may be connected to the line, as
determined by the total RENs, contact the telephone company to
determine the maximum REN for the calling area.
xii
Customer Support Information

Customer Support Information
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 others who may be authorized
by the FCC. In the event repairs are needed on this equipment, contact
your authorized T&T dealer or,
in the U.S.A. only, contact the National
Service Assistance Center (NSAC) at 1-800-628-2888.
■ 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 off-peak hours, such as early morning
or late evening.
■ Direct Inward Dialing (DID).
a. This equipment returns answer supervision signals to the Public
Switched Telephone Network when:
(1)
answered by the called station
(2)
answered by the attendant
(3)
routed to a recorded announcement that can be
administered by the customer premises equipment user
(4)
routed to a dial prompt
b. This equipment returns answer supervision on all DID calls
forwarded back to the Public Switched Telephone Network,
Permissible exceptions are when:
(1) a call is unanswered
(2) a busy tone is received
(3)
a reorder tone is received
Customer Support Information xiii

Customer Support Information
Allowing this equipment to be operated in such a manner as not to
provide proper answer supervision signaling is in violation of
Part 68 rules.
DOC Notification and Repair Information
NOTICE: The Canadian Department of Communications (DOC) label identifies
certified equipment. This certification means that the equipment meets certain
telecommunications network protective, operational, and safety requirements.
The DOC does not guarantee the equipment will operate to the user’s
satisfaction.
Before installing this equipment, users should ensure that it is permissible to
connect it to the facilities of the local telecommunications company. The
equipment must also be installed using an acceptable method of connection.
In some cases, the company’s inside wiring for single-line individual service
may be extended by means of a certified connector assembly (telephone
extension cord). The customer should be aware that compliance with the above
conditions may not prevent degradation of service in some situations.
Repairs to certified equipment should be made by an authorized Canadian
maintenance facility designated by the supplier. Any repairs or alterations
made by the user to this equipment, or any equipment malfunctions, may give
the telecommunications company cause to request the user to disconnect the
equipment.
Users should ensure for their own protection that the electrical ground
connections of the power utility, telephone lines, and internal metallic water pipe
system, if present, are connected. This precaution may be particularly
important in rural areas.
CAUTION: Users should not attempt to make such connections themselves, but
should contact the appropriate electrical inspection authority or electrician, as
appropriate.
To prevent overloading, the Load Number (LN) assigned to each terminal
device denotes the percentage of the total load to be connected to a telephone
loop used by the device. The termination on a loop may consist of any
combination of devices subject only to the requirement that the total of the Load
Numbers of all the devices does not exceed 100.
DOC Certification No. 230 4095A
CSA Certification No. LR 56260
Load No. 6
Renseignements sur la notification du ministère des Communications du
Canada et la réparation
AVIS: L’étiquette du ministère des Communications du Canada identifie Ie
matériel homologué. Cette étiquette certifie que Ie matériel est conforme à
certaines normes de protection, d’exploitation et de sécurité des réseaux de
télécommunications. Le Ministère n’assure toutefois pas que Ie matériel
fonctionnera à la satisfaction de I’utilisateur.
Avant d’installer ce matériel, I’utilisateur doit s’assurer qu’il est permis de Ie
raccorder aux installations de I’entreprise locale de télécommunication.
Le
xiv
Customer Support Information

Customer Support Information
matériel doit également être installé en suivant une méthode acceptée de
raccordement. Dans certains cas, Ies fils intérieurs de I’enterprise utilisés pour
un service individual à Iigne unique peuvent être prolongés au moyen d’un
dispositif homologué de raccordement (cordon prolongateur téléphonique
interne). L’abonné ne doit pas oublier qu’il est possible que la conformité aux
conditions énoncées ci-dessus n’empêchent pas la degradation du service
clans certaines situations. Actuellement, Ies entreprises de télécommunication
ne permettent pas que I’on raccorde Ieur matériel à des jacks d’abonné, sauf
clans Ies cas précis prévus pas Ies tarifs particuliers de ces entreprises.
Les réparations de matériel homologué doivent être effectuées par un centre
d’entretien canadien autorisé désigné par Ie fournisseur. La compagnie de
télécommunications peut demander à I’utilisateur de débrancher un appareil à
la suite de reparations ou de modifications effectuées par I’utilisateur ou à
cause de mauvais fonctionnement.
Pour sa propre protection, I’utilisateur doit s’assurer que tous Ies fils de mise à
la terre de la source d’énergie électrique, des Iignes téléphoniques et des
canalisations d’eau métalliques, s’il y en a, sent raccordés ensemble. Cette
precaution est particulièrement importance clans Ies régions rurales.
AVERTISSEMENT: L’utilisateur ne doit pas tenter de faire ces raccordements
lui-même; il doit avoir recours à un service d’inspection des installations
électriques, ou à un electrician, selon Ie cas.
L’indite de charge (IC) assigné à chaque dispositif terminal indique, pour éviter
toute surcharge, Ie pourcentage de la charge totale qui peut être raccordée à
un circuit téléphonique bouclé utilisé par ce dispositif. La terminaison du circuit
bouclé peut être constitute de n’importe quelle combinaison de dispositifs,
pourvu que la somme des indices de charge de I’ensemble des dispositifs ne
dépasse pas 100.
No d’homologation: 230 4095A
Node certification: CSA LR 56260
L’indite de charge: 6
Customer Support Information xv

Customer Support Information
MERLIN LEGEND D.O.C. Ministère des Communications
Location Label Placement du Canada emplacement de
l'étiquette
xvi
Customer Support Information

Customer Support Information
Security of Your System—Preventing Toll Fraud
As a customer of a new telephone system, you should be aware that there
exists an increasing problem of telephone toll fraud. Telephone toll fraud can
occur in many forms, despite the numerous efforts of telephone companies and
telephone equipment manufacturers to control it. Some individuals use
electronic devices to prevent or faIsify records of these calls. Others charge
calls to someone else’s number by illegally using lost or stolen calling cards,
billing innocent parties, clipping on to someone else’s line, and breaking into
someone else’s telephone equipment physically or electronically. In certain
instances, unauthorized individuals make connections to the telephone network
through the use of remote access features.
The Remote Access feature of your system, if you choose to use it, permits off-
premises callers to access the system from a remote telephone by using an 800
number or a 7- or 10-digit telephone number. The system returns an
acknowledgement signaling the user to key in his or her authorization code,
which is selected and administered by the system manager. After the
authorization code is accepted, the system returns dial tone to the user. If you
do not program specific egress restrictions, the user will be able to place any
call normally dialed from a telephone associated with the system. Such an off-
premises network call is originated at, and will be billed from the system
location.
The Remote Access feature, as designed, helps the customer, through proper
administration, to minimize the ability of unauthorized persons to gain access to
the network. Most commonly, phone numbers and codes are compromised
when overheard in a public location, through theft of a wallet or purse
containing access information, or through carelessness (writing codes on a
piece of paper and improperly discarding it). Additionally, hackers may use a
computer to dial an access code and then publish the information to other
hackers. Enormous charges can be run up quickly. It is the customer’s
responsibility to take the appropriate steps to properly implement the features,
evaluate and administer the various restriction levels, protect access codes,
and distribute access codes only to individuals who have been fully advised of
the sensitive nature of the access information.
Common carriers are required by law to collect their tariffed charges. While
these charges are fraudulent charges made by persons with criminal intent,
applicable tariffs state that the customer of record is responsible for payment of
all long-distance or other network charges. AT&T cannot be responsible for
such charges and will not make any allowance or give any credit for charges
that result from unauthorized access.
To minimize the risk of unauthorized access to your communications system:
■ Use a nonpublished Remote Access number.
■ Assign authorization codes randomly to users on a need-to-have basis,
keeping a log of ALL authorized users and assigning one code to one
person.
Customer Support Information
xvii

Customer Support Information
■ Use random sequence authorization codes, which are less likely to be
easily broken.
■ Deactivate all unassigned codes promptly.
■ Ensure that Remote Access users are aware of their responsibility to
keep the telephone number and any authorization codes secure.
■ When possible, restrict the off-network capability of off-premises callers,
via use of Call Restrictions and Disallowed List capabilities.
■ When possible, block out-of-hours calling.
■ Frequently monitor system call detail reports for quicker detection of any
unauthorized or abnormal calling patterns.
■ Limit Remote Call Forward to persons on a need-to-have basis.
Limited Warranty and Limitation of Liability
AT&T warrants to you, the customer, that your MERLIN LEGEND
Communications System will be in good working order on the date AT&T or its
authorized reseller delivers or installs the system, whichever is later (“Warranty
Date”). If you notify AT&T or its authorized reseller within one year of the
Warranty Date that your system is not in good working order, AT&T will without
charge to you repair or replace, at its option, the system components that are
not in good working order. Repair or replacement parts may be new or
refurbished and will be provided on an exchange basis. If AT&T determines
that your system cannot be repaired or replaced, AT&T will remove the system
and, at your option, refund the purchase price of your system, or apply the
purchase price towards the purchase of another AT&T system.
If you purchased your system directly from AT&T, AT&T will perform warranty
repair in accordance with the terms and conditions of the specific type of AT&T
maintenance coverage you selected. If you purchased your system from an
AT&T-authorized reseller, contact your reseller for the details of the
maintenance plan applicable to your system.
This AT&T limited warranty covers damage to the system caused by power
surges, including power surges due to lightning.
The following will not be deemed to impair the good working order of the
system, and AT&T will not be responsible under the limited warranty for
damages resulting from
■ failure to follow AT&T’s installation, operation, or maintenance
instructions
■ unauthorized system modification, movement, or alteration
■ unauthorized use of common carrier communication services accessed
through the system
■ abuse, misuse, or negligent acts or omissions of the customer and
persons under the customer’s control
■ acts of third parties and acts of God
AT&T’S OBLIGATION TO REPAIR, REPLACE, OR REFUND AS SET FORTH
ABOVE IS YOUR EXCLUSIVE REMEDY.
EXCEPT AS SPECIFICALLY SET FORTH ABOVE, AT&T, ITS AFFILIATES,
SUPPLIERS, AND AUTHORIZED RESELLERS MAKE NO WARRANTIES,
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