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