Lucent Technologies MERLIN LEGEND 6 User Manual

MERLIN LEGEND

®

Communications System

Release 6.0

System Manager’s Guide

555-660-118
Comcode 108136045
Issue 1
February 1998

Copyright <Superscript>© 1998, Lucent Technologies Document 555-660-118
All Rights ReservedComcode 108136045
Printed in USAIssue 1
February 1998

Notice

Every effort was made to ensure that the information in this book was complete and accurate at the time of print ing. However, information is

subject to chan ge. See Appendix A, “Customer Support Information,” for important information.

Your Responsibility for Your System’s Security

Toll fraud is the unauthorized us e of your t elecommunications syste m by an unaut horized party, for example, persons other t han your compan y’s
employees, agents, su bcontractors, or persons working on your company’s behalf. Note that there may be a risk of toll fraud associated w it h your
telecommuni cations system, and if toll fraud occur s , it can result i n subs tantial add it ional charges for your telecommunications ser vices.
You and your System Manager are responsible for the security of yo ur system, suc h as programming and configuring your equi pment to prevent
unauthorized use. The Sys tem Manager i s also respo ns ible for re ading all ins tallation, i ns truction, and system programming do cuments 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. Lucen t T echnologies w ill not be responsible for any charges that result from such unau­thorized use. For important informati on r e garding your s ys tem and toll frau d, see Appendix A, “Customer Suppor t Informati on.”

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 t o pr ovide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This
equipment gen er a tes, uses, and can rad iate radio frequen cy energy and, if not in s talled and used in accor dance with the instruction manual, may
cause harmful in terference to radio communicati ons. Operatio n of this equipment i n a r e s idential area is likely to cause har mful interfer ence, in
which case the us er will be required t o cor rect the inter f e r e nce at his own expen s e. For further FCC information, se e Ap pendix A, “Custo mer
Support Information.”

Canadian Departme nt of Communications (DOC) Inte r ferenc e Information

This digital apparatus does not exceed the Class A limi ts for radio noise emissions set out in the radio inte rference regulations of the Canadi an
Department of Communications.
Le Présent Appareil Numérique n’émet pas de bruits r adioélectr iques dépassant le s limites applicables aux apparei ls numériques de l a classe A
préscrites dans le règlement su r le br ouillage radioélectrique édicté par le ministère des Communications du Canada.

Trademarks

5ESS, AUDIX, DEFINITY, HackerTracker, CONVERSANT, Lucent Technologies Attendant, Fax Attendant System, MERLIN, MERLIN
LEGEND, MERLIN MAIL, MERLIN PFC, MLX-10, MLX-10D, MLX-10DP, MLX-16DP, MLX-20L, MLX-28D, PassageWay, PARTNER,
and Voice Power are registered tr ademarks and 4ESS, Intuity, Lucent Technologies , ML X - 5, MLX-5D, and ExpressRoute 1000 are trademarks
of Lucent Technologies in the US and other countrie s . NetPROTECT is a se r vice mark of Lucent Technologies in the US and other countries.

Supr a , S tarSe t , and Mir a ge are r e gi s tered t r a de m arks of Plantr o nics , In c .
MEGACOM, ACCUNET, AT&T, Magic on Hold, and MultiQuest are registered trademarks of AT&T.
Pipeline is a trad emark of Ascend Commun ications, Inc.
Inte l and Pe nt i u m are regi s tered t r ad e marks of Intel Co r p orat ion.
PagePac is a regis tered trademar k and PagePal a trademar k of DRACON, a divis ion of Harris Corporation.
UNIX is a registered trademark of UNIX System Laboratories, Inc
NORTEL is a registered trademark and DMS a tr ademark of Norther n T e lecom.
MCI, Prism, and Vnet are registered trademarks of MCI Commun ications Corp.
Apple and Macintosh are registered trademarks of Apple Computer, Inc.
Microsoft and Windows are registered trademarks of Microsoft Corporation.

Orderi ng Information

Call: BCS Publications Center

Voice 1 800 457-1235 International Voice 317-322-6791

Write: BCS Publications Center

Order: Document No. 555 -660-118

For more information about Lucent Technologies documents, refer to the section entitled, ‘‘Related Documents’’ on page xlii

Support Telephone Number

In the continental US, Lucent Technologies provides a toll-free customer helpline 24 hours a day. Call the Lucent Technologies Helpline at
1 800 628-2888 or your Lucent Technologies authorized dealer if you need assistance when installing, programming, or using your system.
Consultation charges may appl y. Outside the cont inental US, contact your local Lucent Technologies authorized representative.

Lucent Technol ogies Fraud Intervention

If you suspect you are be ing vi ctimiz ed by toll fraud and you need technical support or assistance, call BCS National Service Assistance Center at

1 800 628-2888 .
Warranty

Lucent Technologies provides a limited warranty on this product. Refer to “Limited Warranty and Limitation of Liability” in Appendix A,
“Customer Support Information.”

Fax [phone] Internat ional Fax [phone]

P.O. Box 4100
Crawfordsville, IN 47933

Comcode: 108 00136045
Issue 1, February 1998

.

®

MERLIN LEGEND

Communications System

Release 6.0

System Manager’s Guide
System Information Sheet

If you have a problem with your system, you may be able to resolve it quickly and easily by following the
appropriate troubleshooting procedure in this guide. If the problem persists or is not listed in this guide, call
the Lucent Technologies Helpline at 1 800 628-2888 for further assistance.

When you call the Helpline, the Lucent Technologies representatives can better help you if you have
available the following system information and troubleshooting information. Also, obtain system planning
Form 2a, System Numbering: Extension Jacks and Form 2c, System Numbering: Line/Trunk Jacks.

System Information

Company Name
(as on the equipment order)
Account Number
(if known)
Customer Identification Number
Main Listed Telephone Number
(for this location)

Lucent Technologies Contact’s
Name and Phone Number

Troubles h ooting Information

Type of equipment experiencing the problem (for example, MERLIN LEGEND Communications System,
MERLIN LEGEND MAIL, or a particular system component):

A description of the problem:

Has this problem occurred before?

Have you attempted to troubleshoot the problem?

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

555-660-118

Contents

Contents

IMPORTANT SAFETY INSTRUCTIONS xv
New Features and Enhancements xvii

■ Release 6.0 Enhancements xvii

Prior Releases: Features and Enhancem e nts xxiii

■ Release 3.1 Enhancements xxiii

■ Release 4.0 Enhancements xxvi

■ Release 4.1 Enhancements xxix

■ Release 4.2 Enhancements xxxi

■ Release 5.0 Enhancements xxxiii

About This Book xxxix

■ Intended Audience xxxix

■ How to Use This Book xxxix

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Page iv

■ Terms and Conventions Used xl

■ Security xli

■ Related Documents xlii

■ How to Comment on This Book xliii

1 Read This Fi rst 1–1

■ Overview 1–1

■ Your Role as System Manager 1–4

■ The System Planning Forms 1–5

■ Upgrading the System 1–6

■ Environmental Requirements 1–6

2 About the System 2–1

■ Background 2–2

■ System Overview 2–9

■ Incoming Trunks 2–12

■ Modes of Operation 2–16

■ Components 2–18

■ Features 2–22

■ Applications 2–22

■ Programming the System 2–25

MERLIN LEGEND Communications System Release 6.0

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Contents

■ System Capacities 2–25

■ Auxiliary Components 2–26

■ Data Communications Capabilities 2–29

3 System Compon ents 3–1

■ Control U nit 3–1

■ Telephones 3–14

■ Operator Consoles 3–30

■ Adapters 3–34

■ Adjuncts 3–36

■ Power-Related Hardware 3–46

4 Features and Applications 4–1

■ Features 4–1

■ Applications 4–60

5 Putting the System to Work 5–1

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■ Scenario 1: A Small Office 5–2

■ Scenario 2: A Professional Office 5–7

■ Optimizing Your System 5–22

6 Managing the System 6–1

■ Using the Task Descriptions 6–2

■ Using the Programming Procedures 6–3

■ Introduction to System Programming 6–5

■ Programming from the Console 6–13

■ Programming from a PC wit h SPM 6–18

■ Centralized Telephone Programming 6–24

■ Using Reports 6–34

■ Setting System Date and/or Time 6–38

■ Backing Up the System 6–39

■ Adding an Extension 6–40

■ Moving an Extension 6–43

■ Removing an Extension 6–44

■ Assigning a HotLine Extension 6–46

■ Changing Calling Re strict ions 6–48

■ Changing Trunk-to-Trunk Transfer Status 6–49

■ Changing Coverage Delay Options 6–51

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Contents

■ Adding/Removing a Line 6–57

■ Adding a DLC Operator Position 6–58

■ Adding a QCC Operator Position 6–61

■ Adding Operator Features 6–64

■ Connecting Auxilia ry Equipm ent 6–66

■ Changing Calling Group Assig nments 6–69

■ Revising Allowed Lists 6–71

■ Assigning Allowed Lists to Extensions 6–73

■ Revising Disallowed Lists 6–74

■ Assigning Disallowed Lists to Extensions 6–76

■ Changing Group Coverage Assignm ent s 6–77

■ Revising Night Service with Group Assignment 6–79

■ Revising Night Service with Coverage Cont rol 6–81

■ Changing Extension Directory Labels 6–83

■ Changing Trunk Labels 6–84

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■ Changing Posted Message Labels 6–85

■ Changing Calling Group Label s 6–87

■ Changing System Directory Labels 6–88

■ Adding a CTI Link 6–89

■ Removing a CTI Link 6–93

7 Learning More 7–1

■ Guides 7–1

■ System Guides Information Finder 7–13

8 Troubleshooting the System 8–1

■ All Phones Are Dead (No Dial Tone or Lights) 8–2

■ Some Phones Are Dead (No Dial Tone or Lights) 8–3

■ Difficulty Making Outside Calls 8–5

■ Phone Does Not Ring 8–8

■ DLC Console Not Ringing for Incoming Calls 8–11

■ QCC Console Not Ringing for Incoming Calls 8–12

■ Single-Line Phones Ring Back after Completed Call 8–13

■ Cannot Transfer Call after Answer on an Outside Line 8–14

■ Night Service Not Working 8–15

■ Calls Not Goin g to Voice Mail 8–17

■ Callers Getting Incorrect Response from Voice Mail 8–19

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Contents

■ Calls Not Going to Coverage 8–20

■ Trouble Hearing Called Party 8–21

■ Programmed Button Fails 8–21

■ Reminder Messages Received with the Wrong Time 8–22

■ Recall/Switchhook Does Not Work 8–23

■ Calling Group Members Not Receiving Calls 8–24

■ Calls Not Receiving Screen Pop 8–25

■ Calling Group Overflow Calls Not

Receiving Screen Pop 8–27

■ Secondary Announcements Not

Playing as Programmed 8–27

■ Other or Unresolved Problems 8–30

A Customer Support Information A–1

■ Support Telephone Number A–1

■ Federal Communications Commission

(FCC) Electromagnetic
Interference Information A–1

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■ Canadian Department of Communications (DOC)

Interference Information A–2

■ FCC Notification and Repair Information A–2

■ Installation and Operational Procedures A–3

■ DOC Notification and Repair Information A–5

■ Renseignements sur la notification du ministère des

Communications du Canada et la réparation A–6

■ Security of Your System: Preventing Toll Fraud A–9

■ Toll Fraud Prevention A–10

■ Other Security Hints A–16

■ Limited Warranty and Limitation of Liability A–20

■ Remote Administration and Maintenance A–21

B About Telecommunications B–1

■ Telephone Extension Equipment B–2

■ Transmission Facilities B–3

■ Switching Equipment B–5

■ Signaling B–8

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Contents

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C System Capacities C–1
D System Planning Forms D–1
E Removing/Reinstalling the Control Unit Cover E–1

■ Removing the Control Unit Housing E–2

■ Installing the Control Unit Housing E–2

GL Glossary GL-1
IN Index IN–1

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MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

Figures

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Figures

2 About the Sys tem 2–1

2–1 The Local Loop 2–3
2–2 The Telephone Network 2–4
2–3 The Evolution of Switches 2–7
2–4 The Switching Office Hierarchy 2–8
2–5 System Overview 2–11
2–6 Incoming Trunks 2–13
2–7 System Components 2–20
2–8 408 GS/LS-MLX Module 2–21
2–9 Applications 2–24
2–10 Auxiliary System Components 2–28

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3 System Components 3–1

3–1 Processor Module 3–3
3–2 Power Supply Module 3–4
3–3 Line/Trunk and Extension Modules 3–11
3–4 MLX-28D Telephone 3–16
3–5 MLX-20L Telephone 3–17
3–6 MLX-16DP Telephone 3–18
3–7 MLX-10D Telephone 3–19
3–8 MLX-10 Telephone 3–20
3–9 MLX-5D Telephone 3–21
3–10 Direct Station Selector 3–23

5 Put ting the System to Work 5–1

5–1 Medical Office Floor Plan 5–4
5–2 Law Firm Floor Plan 5–8
5–3 Law Firm Equipment 5–16
5–4 Law Firm Call Coverage 5–20
5–5 CTI Link Overview 5–24

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

Figures

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6 Managing the System 6–1

6–1 Information Screen 6–7
6–2 Menu Selection Screen 6–7
6–3 Data Entry Screen 6–8
6–4 System Programming Menu Screens 6–8
6–5 Screen Keys 6–10
6–6 Station Busy Screen 6–11
6–7 MLX-20L Telephone with Direct Station Selector

(DSS) 6–14
6–8 Display Buttons and Main Menu 6–15
6–9 Console Overlay 6–16

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E Removing/Reinstalling the Control Unit Cover E–1

E–1 Removing the Control Unit Housing E–2
E–2 Installing the Top Cover E–3
E–3 Insta lling the Front Co v er E–4

MERLIN LEGEND Communications System Release 6.0

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Tables

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Tables

2 About the Sys tem 2–1

2–1 Modes of Operation 2–17

3 System Components 3–1

3–1 Line/Trunk and Extension Modules 3–12
3–2 Analog Multiline Telephones 3–24
3–3 Single-Line Telephones 3–25
3–4 Maximum Number of System Operator Positions 3–30
3–5 Adjunct Summary 3–44

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4 Features and Applications 4–1

4–1 Feature Finder: Basic Calling and Answering

(Non-Networked Systems) 4–5
4–2 Feature Finder: Covering Calls and Having Calls

Covered (Non-Networked Systems) 4–13
4–3 Feature Finder: Calling Privileges and Restrictions

(Non-Networked Systems) 4–16
4–4 Feature Finder: Customizing Phones

(Non-Networked Systems) 4–19
4–5 Feature Finder: Messaging

(Non-Networked Systems) 4–21
4–6 Feature Finder: Timekeeping 4–23
4–7 Feature Finder: System Manager’s Functions and

Features (Non-Networked Systems) 4–24
4–8 Feature Finder: Special Operator and Supervisor

Features (Non-Networked Systems) 4–31
4–9 Selective Coverage Features 4–39
4–10 Features for Covering Calls

(Non-Networked Systems) 4–41
4–11 Facility Restriction Levels 4–49
4–12 Application Descriptions and Modes of Operation 4–62
4–13 Voice Messaging Systems 4–66

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System Manager’s Guide

Tables

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5 Put ting the System to Work 5–1

5–1 Medical Office Needs 5–3
5–2 Executive Staff Needs 5–9
5–3 Secretarial Staff Needs 5–1 0
5–4 Administrative/Support Staff Needs 5–11
5–5 Other Needs 5–12
5–6 Law Firm Call Coverage and Call-Handling 5–17
5–7 Law Firm Calling Restrictions 5–21

6 Managing the System 6–1

6–1 Typefaces Used in Summary Programming

Procedures 6–5
6–2 System Programming Menu Options 6–9
6–3 Screen Keys 6–10
6–4 Idle States 6–12
6–5 Exiting System Programming 6–18
6–6 Features That Can Be Copied: All Telephones 6–30
6–7 Features That Can Be Copied: Direct-Line

Consoles Only 6–32
6–8 Ring Delays Affecting Coverage 6–52
6–9 Group Coverage Call Delivery Rules

(Release 4.1 and Later Systems) 6–54
6–10 Maximum Number of Operator Positions 6–58
6–11 Maximum Number of Operator Positions 6–62

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7 Learning More 7–1

7–1 System Reference Guides Overview 7–4
7–2 Information Finder: Features 7–14
7–3 Information Finder: Programming 7–17

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Tables

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8 Troubleshooting the System 8–1

8–1 Checking the Effectiveness of Delay

Announcement s 8–28

C System Capacities C–1

C–1 Hardware and Software Capacities C–2

D System Planning Forms D–1

D–1 System Planning Forms D–1

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MERLIN LEGEND Communications System Release 6.0

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Tables

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Page xiv

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

IMPORTANT SAFETY INSTRUCTIONS

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IMPORTANT SAFETY INSTRUCTIONS 0

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, alway s 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.

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Page xv

■ 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 insta lling 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.

■ Use only Lucent Technologies-recommended/approved MERLIN LEGEND

Communications System accessories.

■ If equipment connected to the analog extension mo dules (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.

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

IMPORTANT SAFETY INSTRUCTIONS

■ Do not attach the power supply cord to building surfaces. Do not allow

555-660-118

anything to rest on the power cord. Do not locate this product where the
cord will be abused by persons wa lk ing 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, whi c h could result in a ri sk o f fire o r el ec tric a l s ho c k. N ev e r 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 ma chines, alerts, modem s , and

fax machines. To connect one of these devices, you must first have a Multi­Function 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.

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Page xvi

!

WARNING:

■

For your personal safety, DO NOT install an MFM yourself.

■

ONL Y 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 6.0

System Manager’s Guide

New Features and Enhancements

555-660-118

New Features and Enhancements 0

Release 6.0 Enhancements 0

Issue 1

February 1998

Page xviiRelease 6.0 Enhancements

Release 6.0 includes all Release 5.0 functionality, plus the enhancements listed
below.

Private Networks 0

In Hybrid/ PBX mode systems only, MERLIN LEGEND Communi ca tions Systems
can be networked with one another or with DEFINITY
Communications Server (ECS) and ProLogix
private networks. In previous releases, this functionality is available using tie lines,
but users handle calls between networked switches as outside calls. In this
release, dialing the pool access code is not necessary for a call going from one
networked switch to another. Also, del ay-start t ie trunks or T1 trunks administered
as PRI can act as

tandem trunks

to connect networked systems.

Available for Hybrid/PBX mode systems, the private network features of the
MERLIN LEGEND Communications Syste m Release 6.0 provide the following
advantages for geographically dispersed organizational sites:

■ Intersystem Calling. In a private network, users on one local system can

call extensions on other systems in the network. Release 6.0 can support
2-, 3-, 4-, or 5-digit dial plans. They dial these extensions as inside calls. To
implement this function, the system manager programs the extens ion
ranges of remote networked switches to create a non-local dial plan. This
programming does not actually affect numbering on the remote system. To
correctly set up systems for transparent calling among non-local dial plan
extensions, the system manager assigns networking tie and/or PRI tandem
trunks to pools. Then he or she programs as many as 20 patterns,
associates with routes, Facility Restriction Levels (FRLs), digit absorption,
and digit prepending. This allows ARS-like routing of non-local dial plan

™

®

Enterp rise

Communications Systems in

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

New Features and Enhancements

555-660-118

calls. In addition, system managers can control whether calling name,
calling number, or both are shown at MLX display telephone for incoming
calls across PRI tandem trunks.

■ Toll Savings. Private networked trunks may allow you to realize significant

cost savings on long-distance and toll calls by performing tandem switching
in the following two ways:

— Callers on a local system, or individuals dialing in to remote access

at a local system, can reach the public switched telephone network
(PSTN) via outside trunks connected to other systems in a private
network, avoiding toll charges or decreasing the cost of toll calls. No
special dialing is required. For example, an organization might have
a main office in Boston and a subsidiary office in New Jersey,
connected by networked private tandem trunks between two
systems. A user in the New Jersey office who wishes to make an
outside call to the 617 area code (Boston) can do so through a
line/trunk connected to the system in Boston. For example, he or
she might dial,



call over the private network trunks and use the ARS tables of the
remote system in Boston to route this call. The system managers at
each end of a private network set up ARS and Remote Access
features to implement this functionality.

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Page xviiiRelease 6.0 Enhancements

. The local ARS tables would route this

— In addition, local organizations or incoming DID calls use private

networked trunks to make intersystem calls between networked
systems, which may be geographically distant from one another,
also resulting in toll s av in gs .

■ Service Cost Savings. In addition to toll call saving, there are two ways

that organizations can save on service costs incurred from
telecommunications providers that provide public switc hed telephone
network access:

— You order a point to point T1 facility from a service provider, then

use syste m programmin g to set it up for PR I sig nalling. A s
necessary, a service provider can provide amplification on the T1
facility, but does not su p ply switching serv ic es .

— You can tailor your use of PRI B-channels with drop-and-insert

equipment that allows fractional use of B-channels for dedicated
data/video communications between systems at speeds greater
than 64kbps per channel or 128 kbps for 2B data, while keeping the
remaining B-channels for PRI voice traffic. The PRI D-channel must
remain active.

— You can tailor use of T1 channels to support both T1-emulated

tandem tie service and T1 Switched 56 service for data
communications at 56 kbps per channel, allowing 2B data transfers
at 112 kbps. You can also use drop-and-insert equipment to provide
fractional T1 use.

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

New Features and Enhancements

■ Voice Mail and Auto Attendant. Networked systems should have their

555-660-118

own local voice mail and/or auto attendant applications as well as their own
external alerts and Music On Hold sources. However, a single auto
attendant can transfer calls throughout the network. It can answer only
those calls that arrive on the PSTN facilities of the system where it is
connected.

Although many features are available using tie trunks for network connectivity,
PRI tandem trunks provide greatly enhanced features and faster call setup. For
this reason, PRI is recommended over tie functionality in private networks.

Group Ca lling Enhancements 0

Release 6.0 and later systems include Group Calling features that enhance group
calling operations.

Queue Control 0

The system manager can control the maximum number of calls allowed in the
primary calling group queue for calls that arrive on certain facilities often assigned
to calling groups. When the number of the calls in queue reaches the
programmed maximum, subseq uent callers receive a busy signal.

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Page xixRelease 6.0 Enhancements

Queue control applies to calls rec eiv ed on the follo w ing types of facilit ies:

■ DID (Direct Inward Dialing)

■ PRI fac ilit ie s pr og r ammed for dia l- plan routin g

■ All calls transferred from a VMI (voice messaging interface) port

■ Dial-in Tie

Queue control also applies to internal calls to a DGC group and calls to a calling
group through the QCC.



or



Internal calls that dial

and are directed to a calling group
administered as Position-Busy Backup are eligible for queue control. Calls that
come in on a trunk assigned to the Queued Call Console (QCC) are not eligible
for queue control if the call is directed to a calling group designated as Position­Busy Backup.

Remote-access calls to a calling group, coverage calls directed to a calling group,
calls directed to calling group through QCC Position-Busy backup, and all other
outside calls are not eligible for queue control.

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System Manager’s Guide

New Features and Enhancements

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Prompt-Based Overflow 0

System managers can activate the Prompt-Based Overflow option . This option
allows callers waiting in queue and listening to a delay announcement to press the
# key in order to reach t he overflow receiver for the group, which may be the QCC
queue or another calling group (including a calling group assigned for a voice mail
system).

All three overflow distribution options—based on the number of calls, the time a
caller has waited, and according to the caller’s prompt—may be used at one time.
In this case, time-based and number-of-calls based options take precedence over
overflow distribution based on the caller’s prompt.

When prompt-based overflow distribution is used, an extra TTR must be provided
for each delay announcement device assigned to the associated calling group.
The delay announcement informs the caller of the # key option to exit the queue
and leave rather than waiting for an agent. If no TTR is available when a calling
group call arrives, the call is not sent to a delay announcement extension.

Centrex Transfer via Remote Call Forwarding 0

Issue 1

February 1998

Page xxRelease 6.0 Enhancements

Centrex Transfer via Remote Call Forwarding can be used in all system modes of
operation to send outside calls to a remote telephone number or another Centrex
station. In this context, the term

outside calls

refers to calls from outside the
communications sy stem, which m ay ori ginate at exten sions in the Centr ex syst em
but not connected to the local MERLIN LEGEND Communications System.

An outside call that uses this feature is defined as a call that arrives on an analog
Centrex loop-start line at the MERLIN LEGEND Communications System. It may
arrive directly or be transferred without consultation or without transfer supervision
(in the case of an automated attendant). The forwarding call to the outside
number is made on the same line/trunk on which the call arrived, conserving
system facilities. The following considerations and rules apply:

■ Only outside Centrex calls are forwarded using this feature.

■ The system must be equipped with analog loop-start Centrex lines and a

ll

loop-start lines in the system must be Centrex facilities. Loop-start lines do
not have to provide reliable disconnect for use by the Centrex Transfer via
Remote Call Forwarding feature.

■ To transfer calls outside the Centrex system, the organization must

subscribe to a Centrex trunk-to-trunk transfer feature.

Activating Centrex Transfer via Remote Call Forwarding is just like activating
regular Remote Call Forwarding and requires that Remote Call Forwarding be



enabled for the extension. However, the user dials
and a Pause character may be required after the

instead of a dial-out code,



. The Centrex service provider

determines whether the Pause is needed.

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

New Features and Enhancements

555-660-118

Pause cannot be originated from a single-line telephone or a remote access user.
A multiline telephone user in the local system must enter an authorization code to
activate the feature.

A remote access user may activate the feature without using an authorization
code. Barrier code requirements do apply , however.

Authorization Codes and
Remote Call Forwarding 0

In Release 6.0 and later Key or Hybrid/PBX mode systems, forwardin g featur es ,
including Centrex Transfer via Remote Call Forwarding, but excluding Follow Me,
can be activated or deactivated at a multiline telephone by entering the
authorization code for the extension from which calls are to be forwarded. The
user enters the authorization code, then activates or deactivates the forwarding
feature in the normal fashion. This is especially useful for a single-line telephone
user who must include a Pause character in a Centrex Transfer via Remote Call
Forwarding dialing sequence, because the character cannot be dialed at a single­line telephone. It is also useful when activating Call Forwarding or Remote Call
Forwarding at phantom stations, or via remote access (e.g. from another switch in
the network). No other features can be used by entering an authorization code in
this fashion.

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Page xxiRelease 6.0 Enhancements

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

New Features and Enhancements

555-660-118

Issue 1

February 1998

Page xxiiRelease 6.0 Enhancements

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

Prior Release s: Features and Enhancements

555-660-118

Prior Release s: Features and
Enhancements 0

Release 3.1 Enhancements 0

Issue 1

February 1998

Page xxiiiRelease 3.1 Enhancements

Release 3.1 includes all Release 3.0 functionality, plus the enhancements listed
below.

Call Restriction Checking for Star Codes 0

Beginning with Release 3.1, a system manager can add star (*) codes to Allowed
and Disallowed Lists to help prevent toll fraud. Star codes, typically dialed before
an outgoing call, enable telephone users to obtain special services provided by
the central office (CO). For example, in many areas, a telephone user can dial

*67 before a telephone number to disable central office-supplied caller

identification at the receiving party’s telephone. You must contract with your
telephone service provider to have these codes activated.

When users dial star codes, the system’s calling restrictions determine whether
the codes are a ll o w ed . If the y are allowed, the s yst em’s calling res t r ic tio n s are
reset and the remaining digits that the users dial are checked against the calling
restrictions.

Trunk-to-Trunk Transfer Set for Each Extension 0

This enhancement to the Transfer feature enables the system manager to allow or
disallow trunk-to-trunk transfer on a per-extension basis. In Release 3.1 and later
systems, the default sett i ng for all exte ns ions is restricted.

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

Prior Release s: Features and Enhancements

555-660-118

Programmable Second Dial Tone Timer 0

The system manager can assign a second dial tone timer to lines/trunks, in order
to help prevent toll fraud (for example, when star codes are used). After receiving
certain digits dialed by a user, the CO may provide a second dial tone, prompting
the user to enter more digits. If this second dial tone is delayed, and the user dials
digits before the CO provides the second dial tone, there is a risk of toll fraud or
misrouting the call. The second dial tone timer enables the system manager to
make sure that the CO is ready to receive more digits from the caller.

Security Enhancements 0

The sections below outside security measures that are implemented in Release

3.1 and later systems.

Disallowed List Including Numbers Often
Associated with Toll Fraud 0

A factory-set Disallowed List 7 contains default entries, which are numbers
frequently associated with toll fraud. By default, Disallowed List 7 is automatically
assigned to both generic and integrated VMI (voice messaging interface) ports
used by voice messaging systems. The system manager can manually assign this
list to other extensions.

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Page xxivRelease 3.1 Enhancements

Default Pool Dial-Out Code
Restriction for All Extensions 0

The default setting for the pool dial-out code restriction (Hybri d/PBX mode only) is
restricted. No extension or remote access user with a barrier code has access to
pools until the restriction is removed by the system manager.

Default Outward Restrictions for VMI Ports 0

Ports assigned for use by voice messaging systems (generic or integrated VMI
ports) are now assigned outward restrictions by default. If a voice messaging

system must be allowed to call out (for example, to send calls to a user’s home
office), the system manager must remove these restrictions.

!

SECURITYlALERT:

Before removing restrictions, it is strongly recommended that you read

Appendix A, “Customer Support Information.”

Default Facility Restriction
Level (FRL) for VMI Ports 0

The default Automatic Route Selection (ARS) FRL for VMI ports is 0, restricting all
outcalling.

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

Prior Release s: Features and Enhancements

555-660-118

Default for the Default Local Table 0

The default Automatic Route Selection (ARS, Hybrid/PBX mode only) FRL has
changed to 2 for the Default Local table. System managers can easily change an
extension default of 3 to 2 or lower in order to restrict calling. No adj ustment to the
route FRL is required.

New Maintenance Procedure for
Testing Outgoing Trunks 0

Technicia ns must enter a password in order to perform trunk tests.

!

SECURITYlALERT:

The enhancements in Release 3.1 help increase the security of the MERLIN
LEGEND System. To fully utilize these security enhancements, be sure to
read and understand the information in these upgrade notes and in the
relevant system guides.

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February 1998

Page xxvRelease 3.1 Enhancements

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

Prior Release s: Features and Enhancements

555-660-118

Release 4.0 Enhancements 0

Release 4.0 includes all Release 3.1 functionality, plus the enhancements listed
below.

Support for Up to 200 Extensions 0

An expanded dial plan supports up to 200 tip/ring devices.

Support for National ISDN BRI Service 0

This service (Hybrid/PBX and Key modes) provides an alternative to loop-start
and ground-start lines/trunks for voice and digital data connectivity to the central
office. Each of the two B-channels (
voice and one data call at any given time. The data speeds on a B-channel are up
to 28.8 kbps for analog data and up to 64 kbps for digital data, which is necessary
for videoconferencing and other high-speed applications. Releas e 4.0 supports

the IOC Package “S” (basic call handling) service configuration and Multiline Hunt
service configuration on designated CO switches.

bearer channels

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Page xxviRelease 4.0 Enhancements

) on a BRI line can carry one

New Control Unit Modules 0

Release 4.0 supports a new NI-BRI line/trunk module and a higher-capacity
tip/ring module.

800 NI-BRI Module 0

This new module connects NI-BRI trunks to the MERLIN LEGEND system for
voice, high-speed data, and video transmission.

016 Ti p/Ring Module 0

This new module supports a 200-extension dial plan by providing 16 ports for
tip/ring devices. Applications that use a tip/ring interface can connect to this
board. All 16 ports can ring simultaneously. Four touch-tone receivers (TTRs) are
included on the module as well. The module’s ringing frequency (default 20 Hz)
can be changed through programming to 25 Hz for those locations that require it.

Downloadable Firmware for the
016 and NI-BRI Modules 0

The Personal Computer Memory Card International Association (PCMCIA)
technology introduced in Release 3.0 continues to support these two new boards
for installation and upgrade in Release 4.0. A Release 3.0 or later processor is
required for PCMCIA technology.

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

Prior Release s: Features and Enhancements

555-660-118

Support for 2B Data Applications 0

A Lucent T echnologies-certified group and desktop video application can use two
B-channels to make video/data calls when connected to a single MLX extension
jack programmed for 2B data. The 2B data devices must be equipped with
ISDN-BRI interfaces. NI-1 BRI, PRI, or T1 Switched 56 facilities support 2B data
communications at 112 kbps (using two 56-kpbs channels) or 128 kbps (using two
64-kbps B-channels). This feature is available for Hybrid/PBX and Key modes
only .

Support for T1 Switched 56
Digital Data T rans mission 0

For Hybrid/PBX and Key mode systems, Release 4.0 expands support of T1
functionality by providing access to digital data over the public switched 56-kbps
network, as well as to digital data tie-trunk services. Users who have T1 facilities
for voice services can now use them for video or data calls at rates of 56 kbps per
channel (112 kbps for video calls using 2B data). The Release 4.0 offering also
includes point-to-point connectivity over T1 tie trunks, allowing customers to
connect two MERLIN LEGEND Communications Systems or a MERLIN LEGEND
Communications System with a Lucent Technologies DEFINITY
Communications System or DEFINITY Enterprise Communications Server. The
two communications systems can be co-located or at different sites.

February 1998

®

G1.1

Issue 1

Page xxviiRelease 4.0 Enhancements

Forwarding Delay Option 0

Each user can program a Forwarding Delay setting for the Forward, Remote Call
Forwarding, or Follow Me features. The forwarding delay is the number of times
that a call rings at the forwarding extension before the call is sent to the receiver.
The delay period gives the original call recipient time to answer or to screen calls
by checking the displayed calling number (if available). The delay can be set at 0
up to 9 rings. The factory setting for the forwarding delay is 0 rings (no delay).

Voice Announce on Queued Call Console 0

The system manager can enable the fifth Call button on a QCC console

(Hybrid/PBX mode only) to announce a call on another user’s speakerphone
(providing the destination telephone has a voice announce-cap able SA button
available). A QCC cannot receive voice-announced calls; they are received as
ringing calls. The factory-set status for the fifth Call button is Voice Announce
disabled.

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

Prior Release s: Features and Enhancements

555-660-118

Time-Based Option for
Overflow o n Calling Group 0

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February 1998

Page xxviiiRelease 4.0 Enhancements

Release 4.0 has added a

number of calls

limit. If the Overflow Threshold Time option is set to a valid

time

limit for calls in queue in addition to the previous

number between 1 and 900 seconds, calls that remain in the calling group queue
for the set time are sent to the overflow receiver. If the overflow threshold time is
set to 0, overflow by time is turned off. The factory-set time limit is 0 seconds (off).

Single-Line Telephone Enhancements 0

The following changes enhance the performance of single-line telephones:

■ Disable Transfer. Through centralized telephone programming, the

system manager can disable transfer by removing all but one SA or ICOM
button from the extension.

■ No Transfer Return. When a handset bounces in its cradle, the system

interprets this as a switchhook flash and attempts to transfer a call. When

the transfer attempt period expires, the user’s telephone rings. Release 4.0
eliminates this unintended ringing by disconnecting the call in situations
where a switchhook flash is followed by an on-hook state and a dial tone is
present.

■ Forward Discon nec t. All ports on 008 OPT, 012, and 016 modules now

send forward disconnect to all devices connected to them when forward
disconnect is received from the CO. This enhancement prevents the
trunk/line from being kept active when one end disconnects from the call. If
an answering machine is connected to the port, it does not record silence,
busy tones, or other useless messages. This operation is not
programmable.

Seven-Digit Password for SPM 0

Release 4.0 has increased system security by requiring a 7-digit password for
system managers or technicians who use SPM to perform programming or the
Trunk Test procedure. This password is for use in addition to a remote access
barrier code.

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

Prior Release s: Features and Enhancements

555-660-118

Release 4.1 Enhancements 0

Release 4.1 includes all Release 4.0 functionality, plus the enhancements listed
below. There are no hardware changes in Release 4.1.

Coverage Ti mers Programmed for
Individual Extensions 0

Beginning with Release 4.1, coverage timers, which control the duration of the
delay before calls are sent to each level of coverage, are changed as follows:

■ The Group Coverage Ring Delay (1–9 rings) is programmed on individual

extensions and replaces the Coverage Delay Interval programmed
systemwide in previous releases.

■ The Primary Cover Ring Delay (1–6 rings) and Secondary Cover Ring

Delay (1–6 rings), programmed on individual extensions, replace the Delay
Ring Interval programmed systemwide in previous releases.

These enhancements allow the system mana ger to customize cov erage call
delivery to match individual extensions’ call-handling requirements.

Issue 1

February 1998

Page xxixRelease 4.1 Enhancements

Night Service with Coverage Control 0

Beginning with Release 4.1, a system manager can enable the Night Service
Coverage Control option to automatically control the status of telephones
programmed with Coverage VMS (voice messaging system) Off buttons,
according to Night Service status.

When Coverage Control is enabled and the MERLIN LEGEND Communications
System is put into Night Service, all programmed Coverage VMS Off buttons are
automatically turned off (LED is unlit) and all eligible outside calls are sent to the
assigned voice messaging system calling group with normal ringing delay. When
Night Service is deactivated during the day, all programmed Coverage VMS Off
buttons are automatically turned on (LED is lit) and voice mail coverage is
disabled for outside calls.

Users can override the Coverage VMS Off button status at any time by pressing
the programmed Coverage VMS Off button to turn the LED on or off.

Night Service Group Line Assignment 0

Beginning with Release 4.1, a system manager can assign lines to Night Service
groups to control handling of after-hours calls received on individual lines. This
capability replaces the automatic assignment to Night Service groups of only
those lines that ring on the Night Service operator console. An outside line must
be assigned to a Night Service group to receive Night Service treatment.

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

Prior Release s: Features and Enhancements

555-660-118

With this enhancement, Night Service can be activated and deactivated on lines
that do not appear on operator consoles (for example, personal lines), and lines
appearing at operator positions can be excluded from Night Service.

Forward on Busy 0

Beginning with Release 4.1, the Forward, Follow Me, and Remote Call Forward
features are enhanced to remove the requirement that a call be ringing at an
extension before it can be forwarded. With the Forward on Busy enhancement, a
call to an extension with no available SA (System Access) or ICOM (Intercom)
buttons is forwarded immediately to the programmed destination, preventing the

caller from hearing a busy signal from the intended call recipient’s extension.

Maintenance Testing for BRI Facilities that Are
Part of Multiline Hunt Groups (MLHGs) 0

Beginning with Release 4.1, the NI-1 BRI (National Integrated Services Digital
Network-1 Basic Rate Interface) Provisioning Test Tool is enhanced to include
testing for BRI facilities that are part of Multiline Hunt Groups (MLHGs).

Issue 1

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Page xxxRelease 4.1 Enhancements

The NI-1 BRI Provisioning T est Tool is used by Lucent Technologies maintenance
personnel on MERLIN LEGEND Communications Systems that include a 800
NI-BRI module. Technicians use the tool during system installation and
maintenance to test the functionality of the BRI lines and to report analyzed
results.

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

Prior Release s: Features and Enhancements

555-660-118

Release 4.2 Enhancements 0

Release 4.2 includes all Release 4.1 functionality, plus the enhancements listed
below. There are no hardware changes for Release 4.2.

Additional Network Switch and Services Options
for ISDN Primary Rate Interface (PRI) 0

Release 4.2 of the system supports connectivity to MCI® or local exchange carrier
(LEC) PRI services and to the following central office switch types (in addition to

the 4ESS™ and 5ESS

services):

■ NORTEL

■ NORTEL DMS-250 generic MCI07 serving the MCI network

■ Digital Switch Corporation DEX600E generic 500-39.30 serving the MCI

network

®

switch types that carry for AT&T Switched Network

®

DMS™-100 BCS 36 for local exchange carrier services

Issue 1

February 1998

Page xxxiRelease 4.2 Enhancements

Beginning with Release 4.2, the following MCI PRI and PRI local exchange carrier
(LEC) services (along with AT & T Switched Network Services) can be provided to
users of the MERLIN LEGEND Communications System:

■ MCI Toll Services for DMS-250 or DEX600E switch type:

—MCI Prism

®

service for domestic outgoing long-distance and
international voice calls; for domestic outgoing 56-kbps restricted,
64-kbps unrestricted, and 64-kbps restricted circuit-switched data calls

®

—MCI VNet

service for incoming and outgoing domestic and voice calls;
for 56-kbps restricted, 64-kbps restricted, and 64-kbps unrestricted
circuit-swit ch ed data call s

— MCI 800 for domestic, toll-free, incoming voice calls
— MCI 900 service numbers

■ LEC services for DMS-100 switch types:

— DMS Virtual Private Network service for calls between the MERLIN

LEGEND Communications System and another comm uni cations
system (such as another MERLIN LEGEND Communications System)

— DMS INWATS (Inward Wide Area Telephone Service) for domestic

toll-free incoming voice calls

— DMS OUTWATS (Outward Wide Area Telephone Service) for domestic

outgoing long-distance voice calls

— DMS FX (foreign exchange) to provide local call rating for calls from the

local exchange to the area serviced by the foreign exchange.

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

Prior Release s: Features and Enhancements

555-660-118

— DMS tie trunk service to provide private exchange call rating for calls

placed on a dedicated central office facility between the MERLIN
LEGEND Communications System and another comm uni cations
system (such as another MERLIN LEGEND Communications System)

Improvements to Station Message Detail
Recording (SMDR) and Support for MERLIN
LEGEND Reporter Application 0

The SMDR feature is enhanced to provide more details about calling group agent
activities and to help system managers assess the effectiveness of call centers in
terms of both agent performance and the adequacy of facilities to handle inbound
calls. These improvements apply to calling groups that are programmed as Auto
Login or Auto Logout type. The SMDR and MERLIN LEGEND Reporter features
listed are administrable:

■ T ALK Fi e ld . For Auto Login and Auto Logout calling groups, the TALK field

records the amount of time a calling group agent spends on a call.

■ DUR. (DURATION) Field. For Auto Login and Auto Logout calling groups,

call timing begins when a call arrives at MERLIN LEGEND
Communications System and not after a preset number of seconds. Call
timing ends when the call is disconnected; either the caller or the agent
hangs up. This allows the system manager to determine how long a caller
waited for an agent’s attention.

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Page xxxiiRelease 4.2 Enhancements

■ Codi ng o f Ca l ls o n R eports. An asterisk (*) appears in the call record

when:

a. A call is not answered by an Auto Login or Auto Logout calling group

agent and is abandoned while waiting for an agent.

b. The call is answered by someone not a member of an Auto Login or

Auto Logout calling group.

An exclamation point (!) signals that an Auto Login or Auto Logout agent
handled a call that was answered by someone who was not a member of
that Auto Login or Auto Logout with Overflow group. An ampersand (&) in
the call record indicates that the group’s overflow receiver answered the
call.

MERLIN LEGEND Reporter 0

MERLIN LEGEND Reporter provides basic call accounting system reports for all
incoming calls to Auto Login or Auto Logout type calling groups. MERLIN
LEGEND Reporter assists in determining the effectiveness of calling group
agents, assessing the level of service provided to callers, and ascertaining
whether adequate incoming phone lines and agents are available to handle peak­call load. The SMDR Talk Time option sets up special call records used by

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

Prior Release s: Features and Enhancements

555-660-118

MERLIN LEGEND Reporter. The default is Off, in which case the Release 4.0
SMDR reports are available. If the option is set to On, the following new reports
are provided:

■ Organization Detail Report

■ Organization Summary and Trends Report

■ Selection Detail Report

■ Account Code Report

■ Traffic Report

■ Exte nsion Summa ry Re port

■ Data Report

■ Talk and Queue Time Distribution Report

■ Time of Day Report

■ ICLID Call Distribution Report

■ Facility Grade of Service Report

Issue 1

February 1998

Page xxxiiiRelease 5.0 Enhancements

Maintenance Enhancements 0

Change to Permanent Error Alarm 0

Beginning with Release 4.2, the most recent permanent error alarm is not shown
on the System Error Log menu screen but is available as an option from that
screen. For details, refer to the Maintenance section of the technician guide,

Installation, Programming, and Maintenance.

Enhanced Extension Information Report 0

Beginning with Release 4.2, the Extension Information Report includes the
Extension Status (ESS) and supervisory mode of each extension.

Release 5.0 Enhancements 0

Release 5.0 includes all Release 4.2 functionality, plus the enhancements listed
below.

Computer Telephony Integration (CTI) 0

Beginning with Release 5.0, a PassageWay® Telephony Services CTI link from
the MERLIN LEGEND Communications System to a LAN server running Novell
NetWare
control and monitor MLX and analog m ult iline telephone (BIS only) opera tions .
The physical connection for the CTI link is an MLX port on a 008 MLX or 408 MLX

®

software allows Lucent Technologies-certified telephony applications to

®

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

Prior Release s: Features and Enhancements

555-660-118

module on the MERLIN LEGEND Communications System control unit and ISDN

link interface card plugged into the customer’s server. The feature is available for
Hybrid/PBX mode systems only.

NOTE:

The NetWare server software version must be 3.12, 4.1 or 4.11.

The 008 MLX and 408 MLX modules must have firmware vintage other
than 29. If the module has firmware 29, programming a CTI link on the
module is prevented. An earlier or later vintage firmware is supported.

Basic Call Control 0

A CTI link application on a user’s computer can assume basic call control of the
user’s analog multiline or MLX telephone’s SA buttons. Basic call control includes:

■ Answering calls arriving on an SA button

■ Making calls from an SA button

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Page xxxivRelease 5.0 Enhancements

■ Hanging up calls

■ Hold and retrieving a call on hold at the user’s extension

NOTE:

Transfer and 3-way conference, when handled through a CTI link
application, provide the original caller’s calling number information or
other information to the transfer receiver or new conference
participant, if the user has screen-pop capability.

Screen Pop 0

Screen pop occurs when the calling number, called number, or other user-defined
identifier (such as account code that a voice-response unit prompts the caller to
dial) is used to display a screen associated with the far-end party. For example,
Caller ID services can be used to support screen pop on a system that includes a
CTI link; using the calling party number as a database key code, information
about a caller automatically appears on the user’s computer screen when the call
arrives at the extension. Depending on the application, screen pop may be
available for calls that arrive on line buttons other than SA buttons and/or calls
that are answered manually at the telephone rather than by the application.

Screen pop can occur on incoming calls from the following sources:

■ Calling group distribution

■ ISDN PRI Routing by Dial Plan

■ An extension on the MERLIN LEGEND Communi cations System

■ Remote access

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

Prior Release s: Features and Enhancements

555-660-118

NOTE:

In the case of remote access calls, the only information that the
application can collect about the caller is the remote telephone
number.

■ A transfer of a call that was answered by a voice response unit

■ A transfer, redirection, or conference of a call that was answered at a DLC

or at a QCC

NOTES:

1. DLCs (Direct-Line Consoles) may use CTI applications. If they do, they
perform the same way as other extensions. A DLC assigned to use a
CTI link application is a

monitored

regular operator console and not using a CTI link extension, it is

monitored

.

2. Calls to a QCC or non-monitored DLC do not initiate screen pop at the
operator position, but when an operator directs a call to an extension
using a CTI application, caller information does initiate screen pop. If
the DLC is non-monitored, screen pops can occur after the DLC
releases the call.

Issue 1

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Page xxxvRelease 5.0 Enhancements

DLC. When a DLC is used as a

non-

3. Calls transferred from Cover buttons on non-monitored DLCs do not
initiate screen pop at the destination extension.

HotLine Feature 0

The Release 5.0 HotLine feature is designed for retail sales, catalogue sales, and
other types of businesses and organizations and is available in all three modes of
system operation. It allows a system manager to program a single-line telephone
extension connected to an 008 OPT, 012, or 016 module as a HotLine. When a
user lifts the handset at the HotLine extension, the telephone automatically dials
the inside extension or outside telephone number programmed as the first
Personal Speed Dial number (code #01) for the extension. The system does not
permit calls to be transferred, put on hold, or conferenced. (A user can press the

telephone’s Hold button, if it has one, to put a call on local hold, but the call
cannot be redirected in any way. Switchhook flashes are ignored.)

Personal Speed Dial codes can be programmed from the extension prior to
HotLine assignment (a system programming function). Alternatively, a Personal
Speed Dial code can be programmed from the single-line telephone after HotLine
operation is assigned. However, because of security considerations, this is a one­time opportunity. Once the Personal Speed Dial number is programmed, any
changes to it or any other extension programming must be performed using
centralized telephone programming.

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

Prior Release s: Features and Enhancements

Any type of inside or outside line that is normally available to a single-line
telephone can be assigned to a HotLine extension. Generally, the HotLine
telephone does not receive calls, and its lines should be set to No Ring.

!

SECURITYlALERT:

555-660-118

If a HotLine extension accesses a loop-start line, that line should provide
reliable disconnect and be programmed for reliable disconnect. Otherwise,
a user at the extension may be able to stay on the line after a call is
completed and then make a toll call.

Group Ca lling Enhancements 0

Release 5.0 and later systems include Group Calling features that enhance group
calling operations.

Most Idle Hunt Type 0

In addition to the Circular (factory setting) and Linear hunt types supported in
earlier releases, a third hunt type distributes calling group calls in an order based
on which agent has waited the longest since transferring or hanging up on an
incoming calling group call. For some applications, this hunt type is more efficient
than the circular type because it takes into account the varying duration of calls.
The system distributes calls based on when an agent last completed a call, not on
when he or she last received one. This hunting method ignores non-calling group
calls. For example, if an agent transfers a call that arrived on a line not assigned

to the calling group, the calling group member’s most-idle status is unaffected.

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Page xxxviRelease 5.0 Enhancements

Delay Announcement Devices 0

The system manager can designate as many as ten primary delay announcement
devices per group rather than the single device for each group that is available in
Release 4.2 and earlier systems. Furthermore, an additional secondary delay
announcement device can be specified, for a total of ten primary device
extensions and one secondary device extension per group.

A primary delay announcement device operates in the same fashion as a single
delay announcement device, playing once, as soon as it is available, for the caller
who has waited the longest for a calling group agent and has not heard a primary
delay announcement. If a secondary announcement device is used, it can use the
factory setting, which plays the announcement once, or it can be set to repeat the
announcement after a certain amount of time. The system manager programs the
time (0–900 seconds) between announcem ent s. This setting controls both the
interval between primary and secondary announcements and the interval
between repetitions of the secondary announcement if it is set to repeat. (See
Group Callin g Options in Cha pter 4 for guidelines on setting the delay.)

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

Prior Release s: Features and Enhancements

555-660-118

The primary and secondary announcement options, when used together, allow an
initial message to play for callers, followed by a repeating announcement that, for
example, urges callers to stay on the line and wait for a calling group member.

Two or more groups may share an announcement device.
A primary delay announcement device can be administered as a secondary delay

announcement device.

Enhanced Calls-in-Queue Alarm Thresholds 0

Three Calls-in-Queue Alarm thresholds can be set to more clearly indicate the
real-time status of the calls waiting in the queue according to the behavior of
programmed Calls-in-Queue Alarm buttons. In earlier releases, only one Calls-in­Queue Alarm Threshold setting is available to activate the LEDs at programmed
Calls-in - Que ue Alarm bu t tons for a calling group.

Using all three levels, the system manager sets Threshold 3 to the highest value,
Threshold 2 to a middle value, and Threshold 1 to the lowest value. A
Calls-in-Queue Alarm button indicates the severity of the alarm conditions in the
following ways:

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Page xxxviiRelease 5.0 Enhancements

■ If the number of waiting calls is less than the value programmed for

Threshold 1 or drops below that level, the LED is unlit.

■ If the number of waiting calls is greater than or equal to the Threshold 1

value but less than the Threshold 2 value, the LED flashes.

■ If the number of waiting calls is greater than or equal to the Threshold 2

value but less than the value for Threshold 3, the LED winks.

■ If the number of waiting calls is greater than or equal to the highest value,

Threshold 3, the LED lights steadily.

NOTE:

A DSS (Direct Station Selector) button that is used as a
Calls-in-Queue Alarm button can only indicate two threshold levels,
either by flashing or by lighting steadily. If a calling group must use
this type of Calls-in-Queue Alarm button, only two threshold levels
should be programmed.

If all three thresholds are set to the same value, the result is one threshold only
with LED state either off or on (st eady). If two values are the same, then the result
is two alarm levels (flash, steady). The factory setting is one call for all three
thresholds with LED states of off and steady.

An external alert only signals when the number of calls in the queue meets or
exceeds the programmed Threshold 3 value.

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

Prior Release s: Features and Enhancements

555-660-118

MLX-5 and MLX-5D Telephones 0

The MLX-5 nondisplay and MLX-5D display telephones are compatible with all
system releases. The display telephone includes a 2-line by 24-character display,
and both telephones come with 5 line buttons. In systems prior to Release 5.0, the
MLX-5 and MLX-5D telephones are treated as MLX-10 and MLX-10D telephones
respectively. As of Release 5.0, the system recognizes the MLX-5 and MLX-5D
telephones as 5-button telephones.

If these telephones are connected to communications system releases prior to 5.0
they are recognized by the communications system as 10 button telephones.

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Page xxxviiiRelease 5.0 Enhancements

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

About This Book

555-660-118

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.

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Page xxxixIntended Audience

Intended Audience 0

This book is specifically designed to help you fulfill your role as system manager
of the MERLIN LEGEND
you need have little or no knowledge of the system and no particular experience
or expertise.

Communications System Release 5.0. T o use this guide,

How to Use This Book 0

This book provides background information about all aspects of the system,
including system components and feature s, as well as specific information and
procedures for managing the system.

The first two chapters are especially important as an introduction to the system

and your role as system manager. Therefore, you should read Chapter 1, “Read
This First,” and Chapter 2, “About the System,” if you are not already familiar with
these topics.

For more detailed information about features, system programming, and system
components, refer to the

“Related Documents” on page xlii

documentation together with ordering information.

Feature Reference

provides a complete list of system

and to

System Programming

.

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

About This Book

In the USA only, Lucent T echnologies provides a toll-free customer Helpline
24 hours a day. Call the Helpline at 1 800 628-2888 (consultation charges may
apply), or call your Lucent T echnologies representative, if you need assistance
when installing, pro grammi ng, or using your syste m.

555-660-118

Terms and Conventions Used 0

The terms described here are used in preference to other, equally acceptable
terms for describing communications systems.

Lines, Trunks, and Facilities

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Page xlTerms and Convent ions Used

Facility

telephone system and the telephone company ce ntral office. Technically, a
connects a switch to a switch, for example, the MERLIN LEGEND
Communications System to the central office. Techn ically, a
facility or a communications path that does not connect switches, for example, an
intercom line or a Centrex line. However, in actual usage, the terms
are often applied interchangeably. In this guide, we use
to refer to facilities in general. Specifically , we refer to digital
specific terms such as
When you talk to your local telephone company central office, ask about the terms
they use for the specific facilities th ey conne ct 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.

Old New

trunk module line/trunk module
trunk jack line/trunk jack
station extension
station jack ext ens ion jack
analog data station modem data workstation
7500B data station ISDN terminal adapter data workstation
analog voice and data station analog voice and modem data

digital voice and analog data station MLX voice and modem data workstation
analog data-only station modem data-only workstation
7500B data-only station ISDN terminal adapter data-only

MLX voice and 7500B data station MLX voice and ISDN terminal adapter

is a general term that designates a communications path between a

line

is a loop-start

line

and

lines/trunks

facilities

personal line, ground-start trunk, DID trunk

workstation

workstation
data workstation

and

line/trunk

. We also use

, and so on.

trunk

trunk

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

About This Book

555-660-118

Typographical Conventions 0

Certain type fonts and styles act as visual cues to help you rapidly understand the
information presented:

Example Purpose

very

It is
steps. You
before touching the connection.

The part of the headset that fits over
one or both ears is called a

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.

Choose
screen.

To activate Call Wait ing, dial

important that you follow these

must

attach the wristband

headpiece.

([W3URJ

from the display





Italics indicate emphasis.

Italics als o set off sp e ci al ter ms.

The names of fixed-feature, factory­imprinted buttons appear in bold. The
names of programmed buttons are
printed as regular text.

Plain constant-width type indicates text
that appears on the telephone display
or PC screen.

Constant-width type in italics indicates
characters you dial at the telephone or
type at the PC.

Issue 1

February 1998

Page xliSecurity

Product Safety Labels 0

Throughout these documents, hazardou s situations are indicated by an
exclamation point inside a triangle and the word

!

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.

Securi ty 0

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.

CAUTION

or

WARNING

.

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

About This Book

Nondisplaying authorization codes and telephone numbers provide another layer

of security. For more information, see Appendix A, “Customer Support
Information.”

Throughout this document, toll fraud security hazards are indicated by an
exclamation point inside a triangle and the words

!

SECURITYlALERT:

555-660-118

Security Alert indicates the presence of 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.”

Related Documents 0

SECURITY ALERT

Issue 1

February 1998

Page xliiRelated Docu ments

.

In addition to this book, the documents listed below are part of the documentation
set. Within the continental United States, these can be ordered from the Lucent
Technologies GBCS Publications Fulfillment Center by calling 1 800 457-1235.

Document No. Title

System Documents

555-66-100

Customer Documentation Package

Consists of paper versions of

System Manager’s Guide,

Feature Reference, and System Programming.

555-660-110
555-660-111
555-660-112
555-660-113
555-660-116
555-660-118
555-660-150
555-660-800

Feature Reference
System Programming
System Planning
System Planning Forms
Pocket Reference
System Manager’s Guide
Network Reference
Customer Reference CD-ROM

Contains

System Manager’s Guide,Feature Reference,

System Programming and Network Reference.

Telephon e User Support

555-660-122
555-630-150

MLX Display Telephon es User’s Guide
MLX-5D, MLX-10D, and MLX-10DP Display Telephone Tray
Cards (5 cards)

555-630-153
555-660-124

MLX-28D and MLX-20L Telephone Tray Cards (5 cards)
MLX-5® and MLX-10® Nondisplay Telephone User’s Guide

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

About This Book

Document No. Title

555-630-151

555-660-118

MLX-10 and MLX-5 Nondisplay Telephone Tray Cards
(6 cards)

555-630-155
555-660-120
555-660-126
555-660-138

555-660-134
555-660-132
555-660-136

555-660-130
555-640-105

555-660-140

MLX-16DP Display Telephone Tray Cards (5 cards)

Analog Multiline Telephones User’s Guide
Single-Line Telephones User’s Guide
MDC and MDW Telephones User’s Guide

System Operator Support

MLX Direct-Line Consoles Operator’s Guide
Analog Direct-Line Consoles Operator’s Guide
MLX Queued Call Console Operator’s Guide

Miscellaneous User Support

Calling Group Supervisor’s Guide
Data/Video Reference

Documentation for Qualified Technicians

Installation, Programming, & Maintenance (IP&M) Binder

Includes:

Installation, System Programming & Maintenance

(SPM), and Maintenance & Troubleshooting

Toll Fraud Se curity

555-025-600

BCS Products Security Handbook

Issue 1

February 1998

Page xliiiHow to Comment on This Book

How to Comment on This Book 0

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 Te chnologi es
211 Mount Airy Road, Room 2W226
Basking Ridge, NJ 07920

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

About This Book

555-660-118

Issue 1

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Page xlivHow to Comment on This Book

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

Read This First

1

555-660-118

Read This First 1

This chapter includes important background information to help you understand
the system manager function and how to use this guide.

Issue 1

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Page 1-1Overview

1

After a brief overview, this chapter provides the following information:

■ A description of system manager responsibilities

■ A description of the planning forms that are the record of how your system

is set up

■ Information abou t upgrading the system

■ A description of environmental requirements for correct and safe system

operation

Overview 1

Although the MERLIN LEGEND Communications System is technologically
sophisticated and offers state-of-the-art services, it is designed for ease of use
and management.

Once Lucent Technologies personnel install and program the system, it should
require only a little of your time. If you need to make changes to the system as
business needs change, or if there is a problem with the system, you can use the
system reference books and get assistance from Lucent Technologies personnel,
as appropriate.

When you do need to perform simple system management tasks, there are
several easy-to-use tools available to help you. For example, to program changes
in the system, you can use a specially designated system telephone that has a
display, or you can use a personal computer (PC).

MERLIN LEGEND Communications System Release 6.0

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Whether using a system telephone or a PC to program system changes, you

simply make selections from menus; you don’t have to remember any special
commands or codes.

If you need detailed information or step-by-step instructions, the system guides
clearly describe your choices.

Although the number of system reference guides may seem overwhelming at first,
this book contains clear instructions on how to use those guideshow to quickly
and easily find a solution or needed information when a problem or new business
need arises.

There are also several features that can help you manage the system, for
example, reports that provide information about how the system is set up, a
record of all incoming and outgoing calls, and an error log that describes any
system errors that occur. These reports can be viewed on screen or printed out.

If you run into a problem at any time while you are using or managing the system,
there are experienced Lucent Technologies personnel who can provide
information and instructions, including your local Lucent Technologies
representative as well as the Lucent Technolo gies national t echnical support
organization at the Lucent Technologies Helpline (1 800 628-2888; consultation
charges may apply).

Issue 1

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Page 1-2Overview

Using This Guide 1

This guide is specifically designed to help you fulfill your function as system
manager.

To use this guide, you need little or no knowledge of the system and no particular
technical experience or expertise. Also, wherever possible, the guide provides
quick reference tables and illustrations, so that you don’t have to wade through
dense text to get the information you need.

This guide is loosely divided into two parts:

■ The first four chapters provide information to help you understand the

system, including its hardware components and features.

■ The last four chapters specifically deal with managing the system, including

how to perform the most common system management tasks and how to
“troubleshoot” system problems, that is, what you can do on your own
before you call Lucent Technol ogies for help.

You should scan the first four chapters now so that you have a general idea of
how the system works. Then, if and when you need a stronger understanding
about a particular aspect of the system or a common system management task,
you can read that chapter or section more carefully.

MERLIN LEGEND Communications System Release 6.0

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555-660-118

Related Guides 1

Three categories of guides are available for the system:

■ User Guides and Ope rator Guides. Each of these guides descr ibes the

use and features of a specific telephone or operator console.

■ System Reference Gu ides. Th ese guides prov ide detailed information

about system features and capabilities:

Issue 1

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Page 1-3Overview

Feature Reference

—

contains information about features and

applications.

System Programming

—

includes detailed, step-by-step procedures to

program the system.

■ Special Reference Guide. For Release 6.0 and later systems

(Hybrid/PBX mode only), the

Network Reference

provides detailed
information about private networks made up of linked MERLIN LEGEND
Communications Systems and/or DEFINITY Enterprise Comm unication s
Server/ProLogix Solutions systems. The features and system management
issues associated with private networks are not discussed in the

Manager ’s Guide

.

System

NOTE:

An additional guide,

System Planning

, contains information about
completing the planning forms and is used mainly by Lucent Technologies
personnel.

Equipment and Operations Reference

contains information

about system equipment; it has not been updated since Release 3.0.

Feature Reference

The

and

System Programming

are essential when you

perform the common system management tasks described in Chapter 6,

“Managing the System,” or when you otherwise modify the system as your
company needs change and expand.

Both of these guides are described in Chapter 7, “Learning More,” which helps
you quickly find what you need in each guide.

MERLIN LEGEND Communications System Release 6.0

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Read This First

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You r Role as System Manager 1

As system manager, you coordinate the system to ensure the best possible
benefit and performance for your company. Primarily, this involves acting as a
contact for people using the system and for Lucent Technologies personnel, as
well as making changes to the system as the needs of your company change or
expand.

When the system is installed, experienced Lucent Technologies personnel
complete all of the programming required to get the system up and running. But if

and when you need to make changes to the system, you don’t have to be an
engineer, a programmer, or a telecommunications specialist. It is more important
that you understand the needs of your company and the system’s users.

If you like, you can use a personal computer (PC) to do the programming.
Otherwise, you can use a system telephone, with a display, for most programming
tasks. In both cases, menus guide you through the process. You don’t need to
remember any special commands or codes.

Issue 1

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Page 1-4Your Role as System Manager

If you want more detailed instructions, you can use the step-by-step procedures in
the system’s manuals. The instructions are designed so that you can follow them
easily. To quickly find the information or procedure you need, read Chapter 7,
“Learning More,” for descriptions of the system reference guides and how to use
them. As a last resort, call the Lucent Technologies Helpline at 1 800 628-2888
(consultation charges may apply).

System Manager Responsibilities 1

Depending on the size and complexity of a system, more than one person may
perform the system manager function. Lucent Technologies personnel carry out
more complex tasks or help you through them.

Specifically, the responsibilities of the system manager may include the following
tasks:

■ Pre-in stallation

— Ensuring appropriate selection of equipment and features by surveying

your company’s employees and providing the information to your Lucent

Technol ogies repres entative
— Helping develop a floor plan that illustrates where to install equipment
— Participating in any training that your Lucent Technologies

representative provides for you and telephone users

■ Post-installation

— Functioning as the in-house contact both for your system’s users and for

Lucent Technologies personnel

MERLIN LEGEND Communications System Release 6.0

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555-660-118

— Planning for and sometimes implement ing sy stem modi fications that

may become necessary as your company changes and grows
— Maintaining records of changes made t o the system
— Preparing an updated in-house directory of telephone extension

numbers
— Training new users
— Screening repair and/or operational problems or questions and reporting

them, if necessary, to the Lucent Technologies Helpline

(1 800 628-2888; consultation charges may apply)
— Maintaining the security of the system and overseeing features that help

prevent fraud

The System Pl a nni ng Forms 1

When a MERLIN LEGEND Communications Syst em is installed and set up,
Lucent Technologies personnel program it to function according to the options the
customer selects and the features the customer needs. T o make the programming
process run smoothly, the Lucent Technologies personnel f ill out and refer to
planning forms that record all of the system’s settings and features, those that
affect the whole system and those that affect individual extensions. Lucent
Technol ogies repres entative s use a book called
when filling out forms at the time of an installation or upgrade.

System Planning

Issue 1

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Page 1-5The System Planning Forms

as a guide

After the system is installed and programmed, copies of these completed planning
forms are available for you, as system manager, to use for reference and to
update as you make changes to the system. The forms are a complete record of
how your system is set up, so keep them in a safe place.

A list of the forms and a description of each form’s purpose is in Appendix D. One
of the forms, the Employee Communications Survey, is included in Appendix D.
Use this form if you need to conduct a survey of your users’ needs; for example, to
plan system modifications as your company’s needs expand.

If you have not received the completed planning forms for your system, contact
your Lucent T echnologies representative. If you need a blank set of forms, call the
Lucent Technologies Customer Information Center at 1 800 457-1235.

MERLIN LEGEND Communications System Release 6.0

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Upgrading the System 1

There are two types of system upgrades:

■ Feature Upgrade. To upgrade your system to the latest “release” or

version as soon as it becomes available. With little or no changes in your
existing equipment or wiring, your system can be easily adapted and
expanded as your company’s business needs change and grow.

■ Maintenance Upgrad e. To fix problems in the system.

In Release 3.0 and later, an upgrade basically involves inserting a memory card
(similar to a computer diskette) into a slot on the system’s processor or “brain”
(part of the system’ s

control unit

card; for a maintenance upgrade, Lucent T ec hnologies provides the memory card
at no cost to you.

The memory cards are color-coded and have different titles to indicate their
contents and function:

■ Feature Upgrade Memo ry Card . Orange label with black bars; entitled

Forced Install a tion

). For a feature upgrade, you need a new memory

. To upgrade your system to the latest release.

Issue 1

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Page 1-6Upgrading the Syst em

■ Maintenance Upgrad e Memo ry Card. Orange label; entitled

. To fix problems in the system.

Card

NOTE:

A third type of memory card has a white label and is entitled

. This memory card is used to back up and restore your system

Card

programming as described in “Backing Up the System” on page 6–39

For more information about upgrading your system, contact your Lucent
Technol ogies repres entative .

Environmental Requirements 1

The control unit requires a regulated environment that is temperature-controlled,
clean, and not exposed to direct sunlight. In addition, proper power and grounding
are essential for correct and safe system operation, and to protect the system
against lightning, power surges, and other problems.

If the control unit and other system components were installed by qualified Lucent
Technol ogies techn icians, these requirement s were met during installation.

Upgrade

Translation

.

MERLIN LEGEND Communications System Release 6.0

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555-660-118

After installation, you can help with the correct operation of the system by making
sure the following rules are observed:

■ The electrical outlet for the control unit must not be controlled by a switch.

Plugging the control unit into an outlet that can be turned on and off by a
switch invites accidental disconnection of the system.

■ The AC outlet must be properly grounded by using an AC receptacle for a

3-prong plug.

■ Do not install the control unit outdoors.

■ Do not place the control unit near extreme heat (furnaces, heaters, attics,

or direct sunlight).

■ Do not expose the control unit to devices that generate electrical

interference (such as arc welders, or the motors of air conditioners and
ventilators, compressors, and so on).

■ Each auxiliary power unit requires one outlet.

■ Do not expose the control unit to moisture, corrosive gases, dust,

chemicals, spray paint, or similar material.

Issue 1

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Page 1-7Environmental Requirements

■ Do not place anything that could block ventilation on top of or around the

carriers.

■ Do not install the control unit under any device that may drip fluid, such as

an air conditioner.

■ For maintenance purpose s, the control unit should be mounted in an

accessible location. There should be sufficient room and lighting available
to remove the cover(s) and replace modules without moving furniture,
boxes, or other objects.

For more information, contact your Lucent Technolog ies representative.

MERLIN LEGEND Communications System Release 6.0

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Page 1-8Environmental Requirements

MERLIN LEGEND Communications System Release 6.0

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2

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About the System 2

This chapter provides a general overview that introduces all of the major aspects
of the system and its operation, including:

Issue 1

February 1998

Page 2-1

2

■ Trunks

■ Modes of operation

■ System components

■ Features

■ Applications

■ Programming the system

■ System capacities

■ Auxiliary components

■ Data communication s capabilities

NOTE:

Release 6.0 and later systems (Hybrid/PBX mode only) support private
connections between MERLIN LEGEND Com mun ications Systems and
DEFINITY Enterprise Communications Server (ECS) or DEFINITY
ProLogix Solutions systems using private networks or the public switched
telephone network. This aspect of the system is not covered in this guide.
For complete information, see the

More information about specific system topics is included throughout the guide.

Feature Reference

The

and

System Programming

Network Reference.

provide detailed information.

MERLIN LEGEND Communications System Release 6.0

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About the System

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Many of the principles of telephone communications have not changed sinc e
Alexander Graham Bell made the first phone call in 1876. Because learning about
these concepts helps explain how the system works, this chapter begins with
some background information about telephone communications. For a more

detailed history and description, see Appendix B, “About Telecommunications.”
If you are already familiar with the concepts described in this chapter, you can skip

the chapter.

Backgr ound 2

Alexander Graham Bell and his assistant, Thomas A. Watson, demonstrated the
first working model of a telephone on March 10, 1876. Bell made the call from a
transmitter in one room to a receiver a few rooms away.

The first telephone installations were set up like that first call, as direct
connections between one telephone and another. When more and more
telephones were installed, it quickly became impractical to have every phone
connected directly to every other phone. Thus, the concept of
developed, that is, all telephones connected physically to all other telephones, but
each telephone could make the electrical cross-connection betw een itself and
another phone so that the caller was connected to the called party.

Issue 1

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Page 2-2Background

switching

Again, as more and more telephones and lines were installed, it became
impractical to have each telephone perform this switching function, so all lines
from all phones were brought into a common place, called a

exchange

(see Figur e 2–1) where human operators switched calls at

central office (CO)

or

switchboards. This 2-way connection between the telephone and t he CO was
(and still is) called the

local loop .

Eventually, more and more COs were created
and interconnected, until the current global telephone network evolved (see

Figure 2–2

).

As geographic areas expanded and the global telephone network evolved, and as
technological advances became available, switche s also evolved and are now
fully automatic and controlled by computers.

There are now also private switches that, rather than being located at the
telephone company’s CO, are located on a company’s premises. These systems,

private branch exchanges (PBXs

called

), made sense because most of a

business’ calls are between telephones on site within the company.
The MERLIN LEGEND Communications System includes such a switch, located

on a company’s premises, that offers access to even more powerful telephone
network applications and services. It can operate as a PBX (

Hybrid/PBX mode)

or
can be set up to operate in one of two other modes that define how the system
works. The system can also use state-of-the-art telephone equipment.

MERLIN LEGEND Communications System Release 6.0

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The next sections briefly describe the evolution of telephone equipment and

switching. For more information, see Appendix B, “About Teleco mmunication s.”

Telephone Company
Central Office
(CO)

Issue 1

February 1998

Page 2-3Background

Customer
Premises

Figure 2–1. The Local Loop

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Long Distance
(Toll) Network

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CO

CO

Customer
Premises

February 1998

Page 2-4Background

Customer
Premises

Issue 1

Figure 2–2. The Telephone Network

Telephone Equipment 2

The first working model of a telephone consisted of a microphone (called a

transmitte r

a pair of wires and a battery.
A telephone is powered by

supplied by a battery inside the phone. Beginning in 1894, COs used a common
battery to power all the telephones connected to the exchange.

The receiver for early telephones hung on a hook that activated a switch to control
the flow of direct current to the telephone. This hook was called a
term that is still used today. When a telephone handset is sitting on its cradle

on-hook

(
from the cradle (
requesting service.

) and a small loudspeaker-like device (called a

direct current (dc

) which, in early phones, was

), it draws no current from the CO. When a person removes the handset

off-hook

), current flows and signals the CO that the caller is

receiver)

connected by

switchhook

, a

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Similarly, the CO signals the called party by sending current to his or her phone,
causing it to ring. When the called party lifts the handset from its cradle, the
current flows, indicating to the CO that the party has answered.

Bell realized that a caller needed a way to signal the other person to pick up the

phone. After experiments wit h vari ous bells and buz zer s, in 1878 Be ll’s assista nt
Watson developed a bell ringer operated by a hand crank.

When human operators handled switching, the caller used the telephone’s hand
crank to ring the operator, and then told the operator the name of the person he or
she wanted to reach. If the called party was available, the operator connected the
two parties by using a cord that had plugs at each end. Each plug had parts called

tip and a ring

a

that functioned as conductors to complete the electrical circuit.

The operator connected the two parties by plugging in one end of the cord into the

jack

caller’s connector (called a

) on the switchboard, and the other end of the cord

into the call e d p ar ty’s jac k .
Once automatic switches were in place, telephone companies assigned numbers

to telephone service subscribers, and a dialing mechanism was built into the
telephone. The caller identified the called party to the switch by dialing the called
party’s number.

Issue 1

February 1998

Page 2-5Background

Telep hone users originally dialed numbers by using a mech anical device called a

rotary dialer

. A spring wound up when turned in one direction and, on its return to
normal position, caused interruptions in the flow of current, thus creating dial
pulses recognized by the switch. The subsequent development of the touch-tone
dialer provided a further innovation: the creation of unique tones produced by
simply pressing buttons on the dialpad.

Although there are still some rotary-dial telephones in use, most modern
telephones have touch-tone dialing, which is faster and, with the advent of
services available from touch-tone phones, more versatile.

tip

and

ring

The terms

, however, still describe any telephone equipment that
involves only one line, for example, a single-line telephone (such as those in most
homes), an answering machine, or a fax machine. These are referred to as

tip/ring (T/R

) devices.

You can use several different types of telephones with the MERLIN LEGEND
Communications System , including single-line telephone s, analog multiline
telephones, and MLX digital telephones. The terms

analog

and

digital

refer to the

type of signal the telephone produces:

■ Analog Signal. A signal that represents a range of frequencies, that is,

continuously variable physical qualities such as amplitude; for example, the
human voice.

■ Dig ital S ignal . Information transmitted in a coded form (from a computer)

represented by discrete signal elements; for example, off and on or zero
and one.

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Switching Equipment 2

As described earlier, the telephone network is composed of a number of
centralized switching locations, call

central offices (COs

circuit is connected, or switched, to another circuit. That is, the caller’s line is
connected to the called party’s line so the two can hold a conversation.

Telephone operat ors, who supplied the first manual switching, were slow and
costly but afforded some special functionality: calls could be forwarded, messages
taken, and calls interrupted. Electromechanical switching autom ated that manua l
labor and made telephone service universally affordable, but the technology was
inflexible and did little more than switch calls. Now, with electronic, computer­controlled switches, both flexibility and functionality are affordable for everyone.

The Evolution of Switches 2

The method, type, capabilities, and capacities of switches have evolved as
geographic areas expanded and technologic al advances became avail able. The
following list describes each of these progressive innovations. Figure 2–3
illustrates this evolution of switching equipment.

Issue 1

February 1998

Page 2-6Background

), where a telephone

■ Private-Line Service. In the first telephone installations, commun ication

was directly from one telephone to another, as in Bell’s demonstration.
Thus, one telephone could communicate with only one other telephone.

■ Party-Line Service. Several telephones were connec ted to one line so

that a number of people could communicate in the same conversation. But
there was no way to reach a telephone on any other line.

■ Station Switching. All telephones were connected to all other telephones.

The telephone itself performed the switching and made the connection.
This was workable for a small number of telephones, but quickly became
impractical as hundreds of telephones were installed.

■ Centralized Switch in g. As the number of telephones grew, all the lines

from all the telephones came to a common

central office (CO)

or

exchange

so that the lines could be electrically cross-connected. Human operators
made the connections.

,

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Telephone

Station

☎☎☎

☎

☎

Private-Line

Service

Telephone

Station

Switch

☎

☎

Party-Line

☎

Central Office

☎

Service

Issue 1

February 1998

Page 2-7Background

☎

☎

☎

☎☎

☎☎

Station Switching

☎

Figure 2–3. Th e Evolution of Switches

Eventually, as more and more COs were created, a hierarchy of special

(SOs) connected the COs locally and then between cities and countries for

offices

long-distance (toll)

trunks.

The following list provides an overview of the hierarchy of switching offices. Figure

2–4 illustrates the hierarchy.

■ Level 1: Trunking between COs. The first level in the hierarchy consists

of local COs with direct trunk connections between them. This is referred to
as the
be a residence with a single phone line or a business with a customer
premises switch such as the MERLIN LEGEND Communications System .

switching.

local CO network.

☎

Centralized Switching

switching

The dedicated lines between COs were called

The customer premises served by each CO can

■ Level 2: Switching between Tandem (Intermediary) SOs. When the

traffic between two COs exceeds the amount that direct trunking can
efficiently and cost-eff ectively s erve, the COs are each connected to a third
switching office (SOs) that functions as an Intermediary. This is referred to
as the

public tandem network.

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■ Level 3 and Above: Switching among All SOs. To ensure that there is a

communications path from each SO to any other SO, ever-increasing
levels of SOs combine larger and larger geographical areas. This is
referred to as the
service.

Toll
Network

Tandem
Network

555-660-118

toll network

and comprises national and international

Issue 1

February 1998

Page 2-8Background

Key:
= Level 5

= Level 4
= Level 3
= Level 2
= Level 1 (CO)

= MERLIN

LEGEND
Communications
System

= Customer

☎

Telephone

Local
Network

☎

Figure 2–4. Th e Switching Office Hierarchy

Today, a local area within which there is a single, uniform set of charges for
telephone service is called a
local exchange area, and a call between any two points within an exchange area
is a local call. A toll call is a call made to a point outside the local exchange area
and includes service through the switching office hierarchy.

☎

☎

☎

☎

local exchange area.

☎

☎

Switching Methods 2

For the first few decades of telephone service, human operators manually
switched calls and made the actual connections of circuits. They made the
connections at switchboards by using cords that had plugs at each end.

Approximately 120 lines terminated at answering jacks on an operator’s
switchboard. In turn, each operator had 18 cords for making connections.

When a telephone service subscriber made a call, a lamp lit at his or her jack,
telling the operator that the person on that line desired service. The operator
connected to the subscriber’s jack, and the calling party would then give the name
(and later, the telephone number) of the party he or she was calling. Then the
operator completed the call (that is, completed the circuit) by connecting the cord
to one of perhaps 10,000 subscriber jacks within reach. When the call was over

A number of COs may serve a

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and the parties had hung up, the lamp associated with each connecting cord
would go out and the operator knew that the call was complete and the cord could
be removed.

The first automatic switch was invented in 1892 by Almon B. Strowger, an
undertaker who realized that his competitor was getting all the undertaking

business in the town, referred by the town telephone operator—who was also the
competing undertaker’s wife! The Strowger switch was an electromechanical
device controlled by the caller’s telephone (

Strowger’s switch was adapted for use in the Bell System in 1919. It was noisy
and not very flexible at offering new services but, because it was more cost­effective than human operators, it was directly responsible for making telephone
service affordable and universal.

In 1938, the Bell System developed and installed the next innovation in
electromechanical switching, and it is still in use in some areas today. It had fewer
switches, a sophisticated control mechanism, and lower maintenance. However,
like its predecessor , it was not flexible because it couldn’t be programmed.

Issue 1

February 1998

Page 2-9System Overview

station switching).

It was, therefore, a natural progression that led to the idea of using a computer,
with its inherent programmable flexibility, to control the switching operation. This
new generation of switching technology was called an

. With ever-increasing innovations in technology (beginning with the AT&T

(ESS)

No.1 ESS first installed in 1965), the Lucent Technologies 5ESS

system handles 100,000 lines and 650,000 telephone calls per hour. The newer
digital switching systems also interface easily with high-speed digital trunks.

As mentioned earlier, the MERLIN LEGEND Communications System is a switch

located on a company’s premises, providing access to powerful features and
advanced telephone network applications and services.

System Overvi ew 2

The MERLIN LEGEND Communications System can handle voice and data
simultaneously over the same lines, and voice features can enhance the use of
data communications. The system accommodates businesses with needs ranging
from a few telephones to over 100 telephones. Its modular design allows easy
expansion.

Many of the terms and concepts introduced in the beginning of this chapter are
used in the system. As illu strated in Figure 2–5
of incoming trunks from the telephone company’s central office (CO), connected
through the system’s

control unit

example, a PC or fax machine.

to telephones and other system equipment, for

electronic swi tching system

®

digital switching

, the system allows the connection

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There are various types of trunks that provide different functionality. Likewise, a
variety of telephones and other equipment can be connected to the system.
Depending on the trunks and the telephones and other equipment selected, a
wide array of features and add-on products (
to the needs of your company.

The rest of this chapter provides an overview of each primary system aspect:

■ Incoming trunks

■ Modes of operation

■ System components

■ Line/trunk and extension modu les

■ Features

■ Applications

■ Programming the system

■ System capacities

applications

Issue 1

February 1998

Page 2-10System Overview

) can function according

■ Auxiliary components

■ Data communication s capabilities

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Telephone
Company

MERLIN
LEGEND
Communications
System
Control Unit

Telephones
and Other
Equipment

555-660-118

Telephone Company
Central Office
(CO)

Incoming Trunks

012

8 Analog Telephones (ATL)
44GS or LS Outside Lines/
408 GS/LS

8 MLX (Digital) Telephones
008 MLX

408

PROCESSOR

POWER

CAUTION

ON



OFF

Turn off
power before
inserting or
removing
modules

AG INPUT

FR
GND

Issue 1

February 1998

Page 2-11System Overview

MERLIN
LEGEND

Applications

Auxiliary
Components

Figure 2–5. System Overview

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Inco ming Trunks 2

Trunks are the telephone company’s facilities, provided by the central office (CO)
to carry voice or data communications (see Figure 2–6
trunks, each with different capabilities. These types have evolved over the years
as technology has advanced and customer needs have expanded.

The decision concerning the type of trunks chosen for your company’s system
depends primarily on your company’s needs. Other factors include cost (due to
differing capabilities, the use of some trunks is more expensive than others), and
availability (some of the advanced trunks are not available everywhere).

Your company chooses trunks before the system is installed. A L ucent
Technol ogies represent ative works with you or your company’s representative to
identify needs and, therefore, the appropriate type and number of trunks. When
the Lucent Technol ogies repres entati ve places the order for the system
equipment, she or he also contacts the local telephone company and arranges for
the trunks.

Issue 1

February 1998

Page 2-12Incoming Trunks

). There are a variety of

Depending on the trunk type and what the CO can provide, a variety of services is
available, for example, incoming and outgoing WAT S (INWATS and OUTWATS).

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Telephone
Company

Incoming Trunks

MERLIN
LEGEND
Communications
System
Control Unit

555-660-118

Telephone Company
Central Office
(CO)

Loop-Start Trunk
Ground-Start Trunk
Digital Facility

012

8 Analog Telephones (ATL)
44GS or LS Outside Lines/
408 GS/LS

8 MLX (Digital) Telephones
008 MLX

408

PROCESSOR

POWER

CAUTION

ON



OFF

Turn off
power before
inserting or
removing
modules

AG INPUT

FR
GND

Issue 1

February 1998

Page 2-13Incoming Trunks

MERLIN
LEGEND

Telephones
and Other
Equipment

Applications

Auxiliary
Components

Figure 2–6. Incoming Trunks

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The types of trunks are:

■ Loop-Start Lines (Incoming and Outgoing Calls). Provide incoming and

outgoing calls and are intended primarily for single-line telephones and
older PBXs. The y are th e simplest (oft en th e le a st e x p ensive) and most
common facilities in the nationwide telephone network. Although they are
not appropriate for some situations, they are necessary for others (for
example, some caller identification services).

■ Grou nd-S t art Trunks (Incoming and Outgoing Calls). Provide a signal at

the beginning and end of incoming and outgoing calls to determine the
availability of a trunk before the CO routes an incoming call on it. Also,
when either the caller or the called party hangs up, the entire circuit is
disconnected and dropped. These trunks were introduced to solve the
problems that PBXs encounter on loop-start trunks (namely, glare and
unreliable disconnect), as described in the Introduction booklet.

■ Tie Trunks. Private lines that directly connect two communications

systems. Using a tie trunk, a user on one system can call an extensio n on
another system by dialing an access code and the extension number or
simply the extension number. In Release 6.0 and later systems
(Hybrid/PBX mode only), tandem tie trunks, either analog or T1-emulated,
can be used for networking. In this case, the user dials only the non-local
extension number without an access code. For more information, see the

Network Reference

.

Issue 1

February 1998

Page 2-14Incoming Trunks

In more complex tie trunk configurations, a person can tie into another
system and use a trunk that does not exist on his or her own system. For
example, in a company with locations in New York, Chicago, and Los
Angeles (with tie trunks between New York and Chicago, and Chicago and
Los Angeles), users in New Yo rk can access a Los Angeles trunk and
make a local call as if they were in Los Angeles themselves.

■ Direct Inward Dial (DID) Trunks (Incoming Calls Only). Provide fast

access to specific individuals; incoming DID calls can be routed directly to
an extension or calling group without system operator assistance.

■ Dig ital Fa c ilities. MERLIN LEGEND supports two different types of digital

facilities: Digit al Signal 1 (D S1) and, in Releas e 4. 0 and later system s ,
National Integrated Services Digital Network 1 Basic Rate Interface
(abbreviated

NI-1 BRI

) facilities. T1, PRI, and BRI are the system’s
interfaces to these Integrated Services Digital Network (ISDN) facilities,
which provide end-to-end digital connectivity and switched connections to
other networks. All three interfaces allow high-speed data transfer.

— National Integrated Services Digital Network 1 Basic Rate Interface

(Incoming and Outgoing Calls). One NI-1 B R I fa c ilit y carr ies the
equivalent of three “lines.” Two are called

B-channels

and provide voice
and data communications services. A third D-channel controls signaling
and maintains operations on the B-channels.

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—Digital Signal 1 Facility Programmed for Either T1 or Primary Rate

Interface Operation (Incoming and Outgoing Calls). One Digital Signal

1 (DS1) facility provides the equivalent of 24 lines, called
Release 4.0 and later systems, the DS1 facility can be programmed to
operate in one of three ways:



T1 Voice Operation. A “line” can be programmed through the
system, without the services of a telephone company installer, to
emulate a ground-start, loop-start, tie, or DID trunk. This type of T1
operation also gives you access to special services, such as inbound
800 or WATS service for incoming, toll-free service for voice calls.
Only this type of T1 operation is available in releases prior to Release

4.0.

NOTES:

1. While you can quickly and easily change the type of line
that a channel imitates, you must coordinate the change
with the T1 provider so that both ends of the connection are
set up for the same type of line/trunk.

Issue 1

February 1998

Page 2-15Incoming Trunks

channels

. In

2. In Release 6.0 and later systems (Hybrid/PBX mode only),
tandem PRI lines can be used for networking. In this case,
you order a T1 facility and program it for PRI operation. For
more information, see the



T1 Data Operation. Available in Release 4.0 and later systems, T1

Network Reference

.

data operation allows high-speed data communications ov er the
public switched network; this is called

T1 Switched 56 service

. It also
provides data tie “lines” to connect one MERLIN LEGEND
Communications Syste m to anothe r o r to a DEFINITY syst e m. A T1
data-operation “line” is a



Primary Rate Interface (PRI) Operation. The 24 “lines” include 23

channel

.

B-channels. Each B-channel can dynam ically provide voice and data
services; one D-channel carries signaling information for the
B-channels.

NOTE:

Facility

is a general term that designates a communications path between
a telephone system and the telephone company central office. Specifically,
we refer to digital facilities (sometimes called

). Technically, a

trunk

pipes

connects a switch to a switch, for example, the MERLIN LEGEND

line

Communications System to the central office. Techn ically, a

is a loop­start facility or a communications path that does not connect switches, for
example, an intercom line or a Centrex line. However, in actual usage, the

line

and

trunk

terms

lines/trunks

use
specific terms such as

are often applied interchangeably. In this guide, we

and

line/trunk

to refer to facilities in general. We also use

personal line, ground-start trunk, 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.

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Modes of Oper ati on 2

The system’s mode of operation determines the following:

■ The types of outside trunks that can be connected to the system

■ How users access outside trunks

■ The types of system operator consoles that your business can use

■ The features and applications that your business can use and how they

work

■ How the system is registered with the Federal Communications

Commission (FCC)

The choice of system mode depends on your company’s needs. Your Lucent
Technologies representative and you or your company’s representative decide on
the system mode when you plan and purchase your system. Lucent Technologies
personnel then set the mode when they install the system.

Issue 1

February 1998

Page 2-16Modes of Operat ion

!

CAUTION:

Because the operating mode significantly affects how the system works,
you should know the mode in which your system is configured. You can
either check the

Planning Forms

your Lucent Technologies representative

(Form 1, Page 2, System Mode) or contact

.

The system operates in one of three modes:

■ Key Mode. The simplest way to provide people with more than one line

from a telephone. Easy to use. Recommended for smaller systems.

■ Hybrid/PBX Mode. Especially useful where toll fraud/security are a

concern. Provides cost-effective call routing, especially useful for special­purpose network services. Recommended for medium to larger systems.

■ Behind Switch Mode. Used when the system is connected to a system

such as DEFINITY. May be appropriate for users who are part of a large
organization, for example, a department within a company.

While Key mode is appropriate for smaller systems and has the capacity
limitations of any key system, the MERLIN LEGEND Communications System,
unlike other key systems, is flexible and allows you to expand to a PBX system
when your business outgrows Key mode. Table 2–1

outlines the primary
differences among the modes. “Line Buttons on Mult iline Tele phones ” on page

3–25 describes Shared Access (SA) buttons and Intercom (ICOM) buttons.

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Table 2–1. Modes of Operation

Key Mod e Hybrid/PBX Mode Behind Switch Mode

Description Telephones have multiple

buttons (or keys) labeled
with telephone number s.
Every button corr esponds
directly to an outsi de li ne.
Different buttons (ICOM
buttons) are used for
inside cal ls.

Typ es of Trunks Ground-start

Loop-start
Tie
DS1 (T1 only)
BRI

Number of
Extensions:

Fewer than 50
More than 50

Types of Buttons A line button f or each

User Access to
Outside
Lines/Trunks

Types of Operator
Console(s)
Recommended
Use

Good
Not recommended

outside line.
Up to 10 ICOM buttons for

inside cal ls.

Choosing a specific li ne
button

DLCs only DLC, QCC, or a

Smaller systems (fewer
than 50 ext en sion s )

Outside trunks are
grouped in pools for
shared use; the system
automatically selects an
available outside trunk.
People use the same
button to make both
inside and outsi de calls.

Ground-start
Loop-start
Tie
DS1 (PRI and T1)
DID
BRI
Private network tr unks

(Release 6.0 and later)

Good
Good
Up to 10 SA buttons.

Pool button to access a
specific pool. (Optional) A
personal line button for
dedicated use of a
specific out side trunk.

Dialing a code (usually
from an SA button

combination of bot h
Medium to larger systems

(more than 50 extensions)

February 1998

Used when the system
(called t he local system ) is
connected to a larger PBX
or Centrex system (called
the host system). One
outside line (a pri m e li ne)
is assigned to each
telephone. The host
system provides the
interface to outside lines
and some features.
Ground-start
Loop-start
Tie

Good
Good up to 80
For multiline phones:

Multiple prime l ine butt ons.
Up to 10 ICOM buttons.



)

Dialing the host system’s
dial-out cod e (usually
from a prime line button
DLCs only

For users wh o a re par t of a
large organization, for
example, a department
within a company or
companies which
subscribe to Cent rex
serv i c es for m o st feature s

Page 2-17Modes of Operat ion

Issue 1



)

Continued on next page

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Table 2–1. Continued

Key Mod e Hybrid/PBX Mode Behind Switch Mode

Comments All users need multiline

phones.
Line assignments can be

customized by phone or
groups of phones. For
example, you can assign
tie trunks only to the
telephones where the y
are needed.

Provides the most effic ient
use of outside trunks. The
Automatic Route
Selection (ARS) feature
can be programmed for
the cost-effective use of
pools and the greates t
protection aga inst toll
fraud. Provides greater
functional ity for single-line
phones than other modes.
Fewer line buttons
required for users.

Components 2

Issue 1

February 1998

Page 2-18Components

Users can have acces s to
most features of both the
local system and the host
system. Single -line phones
can be used.

The system includes the following components:

■ Control Unit. The circuitry that manages the switching activities of the

telephone company’s trunks and your system. It consists of

modules

which

processor module

(circuit packs) are inserted. The module types include a

(the “brain” of the system), a power supply module, and

carriers

a variety of line/trunk or extension modules with jacks for connecting the
incoming trunks and the extension lines. The following section explains
line/trunk and extension modules in more detail.

A plastic cabinet (the cover) protects the control unit.

■ Telephones. Single-line, cordless, cordless/wireless, and analog multiline

telephones, as well as digital MLX telephones that offer a variety of
features and advanced capabilities. Most MLX telephones have displays
that show call information, list features for using the telephone, and provide
menu-driven programming instructions. MLX telephon es include the
following: MLX-5, MLX-5D, MLX-1 0, MLX-10D, MLX-10DP, MLX-16DP,
MLX-20L, and MLX-28D.

■ System Operator Consoles. Telephones programmed to handle a variety

of operator functions. Types of consoles include:
— Analog or MLX Direct-Line Console (DLC). Outside lines are assigned

to individual buttons, and the console can have several calls ringing at
the same time. Only certain MLX telephones and analog multiline
telephones can be used as DLCs.

into

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2

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—MLX Queued Call Console (QCC). Available only in Hybrid/PBX mode.

Incoming calls wait in a queue for the operator and reach the QCC on a
first-in, first-out basis, according to the call priority level assigned
through system programming. Only one call rings at a time.

The MLX-20L telephone is the only telephone that can be assigned
through system programming to function as a QCC. The buttons on the
QCC are factory-set with fixed features.

The type of console used depends on the company’s needs and the
system’s mode of operation, as described earlier in this chapter.

NOTE:

One or two Direct Station Selector (DSS) adjuncts can be added
to an MLX console to provide 150 or 300 additional extension
buttons. The analog System Display Console has 40 built-in DSS
buttons and provides access to three pages of extensions, for a
total of 120.

■ Auxiliary Components. Adapters for connecting extra equipment and the

adjuncts that add features to the system or extensions. Some adjuncts are:
loudspeaker paging systems, headsets, fax machines, and modems. Other
add-on components are optional accessories, for example, su rge
protectors that protect the equipment from lightning and power surges.

Issue 1

February 1998

Page 2-19Components

Figure 2–7

illustrates some of the compone nts of the system. “Aux iliary

Components” on page 2–26 and Chapter 3, “System Components,” include

additional information. For more information or to order any of the components,
contact your Lucent Technologies representative.

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

About the System

2

Telephone
Company

MERLIN
LEGEND
Communications
System
Control Unit

555-660-118

Telephone Company
Central Office
(CO)

Incoming Trunks

012

8 Analog Telephones (ATL)
44GS or LS Outside Lines/

408 GS/LS

8 MLX (Digital) Telephones

008 MLX

408

PROCESSOR

POWER

CAUTION

ON



OFF

Turn off
power before
inserting or
removing
modules

AG INPUT

FR
GND

LAN

Telephony

Server

Your LAN

Issue 1

February 1998

Page 2-20Components

MERLIN
LEGEND

Telephones
and Other
Equipment

Applications

Auxiliary
Components

MLX

Telephone

Fax

Machine

MLX

Telephone

with MFM

Single-

Line

Phone

Answering

Machine

Analog

Multiline

Telephone

Figure 2–7. System Components

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

About the System

2

555-660-118

Line/Trunk and Extension Modules 2

The line/trunk and extension modules inserted into the control unit have jacks for
connecting CO trunks and system telephone wires to the control unit.

A system with a basic carrier has five slots for modules. Up to two expansion
carriers can be added, each one providing six slots for modules.

The system supports 17 different types of modules that vary in the types of
lines/trunks that they support and the types of telephones or other equipment that
can be connected to them.

The names of the modules identify their capacities and capabilities. The first digit
tells you the number of line/trunk jacks a module supports, while the last two digits
describe the number of extension jacks it supports. Following the number may be
letters that indicate the type of trunk it supports, that is,

ground-start

for
the module supports loop-start trunks. For example, the 408 GS/LS MLX modul e
provides four li n e/trunk jacks and eight MLX extension jacks, and sup ports
ground-start and loop-start trunks (see Figure 2–8

; if the number indicates line/trunk support and no letters follow,

Issue 1

February 1998

Page 2-21Components

LS

for

loop-start

and GS

).

408 GS/LS

4 GS or LS Outside Lines/

8 Analog Telephones (ATL)

PFT Jack

Line/Trunk
Jacks

Digital (MLX)
Extension
Jacks

408

GS/LS-MLX

Figure 2–8. 408 GS/LS-MLX Module

MERLIN LEGEND Communications System Release 6.0

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555-660-118

Features 2

The versatility and power of the system are due, in large part, to the variety of
feature settings and services it can provide.

Features include traditional items (Transfer and Call Waiting), as well as
advanced features (Coverage and Park).

Some functions can be perfo rmed in sev er al way s. For exam ple, the system
offers a variety of ways to provide call coverage. You therefore choose and set up
features according to your specific business needs.

Chapter 4, “Features and Applications,” provides additional information about
features. The

Feature Reference

provides detailed information, including

interactions of features.

Applications 2

Issue 1

February 1998

Page 2-22Features

Numerous add-on products (

applications

) are available to enhance the system,

including:

■ Voice messaging systems answer incoming calls, provide callers with a

menu of choices, such as people or departments, and then transfer the call
as prompted by the caller using a touch-tone phone. Voice messaging
systems may or may not include voice mail services, descri be d below.

■ Voice mail services enable system users, for example, to send voice

messages to other users, forward voice messages with comments, and
return a call.

■ Fax messaging services automat e the sendin g, receiving, call-han dling,

and storage of faxes, in much the same way voice messaging systems
handle voice messaging.

■ Call accounting applications manage telephone usage by tracking and

sorting telephone costs and producing reports on costs.

■ A call management application answers and distributes calls to members

of a specified group, for example, ticketing agents.

■ PassageWay Direct Connection Solution provides an interface between an

extension and a PC with Microsoft

®

Windows®, as well as providing utilities
and allowing the integration of Windows applications with telephone
activities.

■ In Release 5.0 and later systems, t he CTI l i nk hardware/sof tware f eature is

available as part of the Lucent Technologies P as sageWay Telephony
Services product. It works with Novell NetWare LANs (local area networks)
to support LAN applications on Windows 3.1, Windows 95, Windows for
Workgroups 3.11, Windows NT, Apple

®

Macintosh® OS, and UNIX®

System clients.

MERLIN LEGEND Communications System Release 6.0

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About the System

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555-660-118

NOTE:

A CTI link is not compatible with all Macintosh OS and UNIX System
clients, which must support private data in order to function with the
feature. For additional information, consult the

Services Network Manager’s Guide.

■ Group and personal videoconferencing and data exchange applications

allow multimedia interaction among people who work together but are
geographically distant.

In addition, the system provides support for special services, such as Centrex,
Basic Rate Interface (BRI), and Primary Rate Interface (PRI).

Issue 1

February 1998

Page 2-23Applications

PassageWay Telephony

Figure 2–9

illustrat es som e of th e s e ap p lic at io ns .

Businesses can purchase some applications separately; others are integrated to
have a common interface. Most have settings that you can easily customize to
suit your company’s needs. Some require additional hardware.

In Release 5.0 and later systems, a bridge to PC applications is available: the
Computer Telephony Integration (CTI) link or

CTI link

(part of the PassageWay
Telephony Services product from Lucent T echnologies) for local area networks
(LANs). The connection is made through a programmed MLX extension jack. The
link allows calls on SA buttons to be monitored and controlled from workstations
connected on a LAN to a server running Novell NetWare software. The link
supports applications such as power dialing for telemarketing salespeople and
pop-up database information about a caller (screen-pop applications that use the
caller’s telephone numbers must be combined with Caller ID services through
PRI, NI-1 BRI, or a local service provider via the system’s 800 GS/LS ID module).
For more information, see “CTI (Computer Telephony Integration) Link” on page

5–23 or consult your Lucent Te chnologi es representative.

Chapter 4, “Features and Applications,” includes an overview of available
applications. Of course, the documentation provided with the product is the most
authoritative. Once you have reviewed this material and found an application that
seems to fit your needs, contact your Lucent T echnologies representative to order
the product or discuss it further.

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

About the System

2

Telephone
Company

MERLIN
LEGEND
Communications
System
Control Unit

555-660-118

Telephone Company
Central Office
(CO)

Incoming Trunks

012

8 Analog Telephones (ATL)
44GS or LS Outside Lines/
408 GS/LS

8 MLX (Digital) Telephones

008 MLX

408

PROCESSOR

POWER

CAUTION

ON



OFF

Turn off
power before
inserting or
removing
modules

AG INPUT

FR
GND

LAN

Telephony

Server

Your LAN

Issue 1

February 1998

Page 2-24Applications

MERLIN
LEGEND

Telephones
and Other
Equipment

Applications

PassageWay

Direct Connection

Solution

Auxiliary
Components

MLX

Telephone

Call

Accounting

System

Fax

Machine

MLX

Telephone

with MFM

Single-

Line

Phone

Answering

Machine

Messaging

Voice

System

Analog

Multiline

Telephone

CTI Link

Application

Figure 2–9. Applications

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

About the System

2

555-660-118

Programming the System 2

System installation includes programming features, settings, and options selected
by you or a representative from your company.

Depending on the feature, either you, as system manager, or a person at his or
her extension can make changes to features:

■ System Programming. Used to program systemwide or group features. A

Lucent Technologies technician can also do system programming. You use
one of the following:

Issue 1

February 1998

Page 2-25Programming the System

— An MLX-20L telephone, referred to as the
— A PC with System Programming and Maintenance (SPM) software,

reaching the system in one of three ways: a direct connection between
the PC and the system’s control unit, an on-site or
connection to the modem in the control unit, or an off-site
modem connection.

■ Extension Prog ra m m i ng. Can be performed in two ways:

— Central ized Telephone Progr amming. You program at the

programming console.

— T elephone Pro grammi ng. Either you or the user programs at a specific

telephone.

When programming at an MLX telephone or PC, you work with features and
options from screen menus. You simply select an item from the menu and enter
settings as desired.

System Capacities 2

The system can support up to 80 line/trunk jacks, 72 of which can actually be
B-channels supplied on 100D modules or 800 NI-BRI modules (Release 4.0 and
later systems).

programming console

local

modem

remote

The maximum number of extensions depends on the type of equipment included
in the system. In theory, you can connect as many as 255 extensions, but this, in
fact, is not practical. In Release 4.0 and later systems, a higher-capacity tip/ring
(T/R) extension module, the 016, allows the system to support as many as 200
T/R devices such as single-line telephones, modems, and fax machines. The
number of extensions you can connect depends on the equipment you are using
in your system.

Appendix C describes hardware and software capacities, that is, the minimums
and maximums for certain features.

If you have any questions about your system’s capacity, contact your Lucent
Technol ogies repres entative .

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

About the System

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555-660-118

Auxiliary Components 2

There are many other components that people use with the system, including
adapters, adjuncts, and accessories. You probably have many of these in your

system already. If you’re interested in adding any of these components to your
system, contact your Lucent Technologies representative.

The following is a list of the types of auxiliary sys tem components, including some
examples of each:

■ Adjuncts. An auxiliary piece of equipment that adds features to the

system, for example, a fax machine or a modem. There are three types of
adjuncts:

— System Adjuncts. Connect directly to the control unit, for example, a

Station Message Detail Recording Printer (SMDR) to print call records, a
PC with System Programming and Maintenance (SPM) software to be
used for the programming and maintenance of the system, loudspeaker
paging systems, and Magic on Hold
callers on hold.

Issue 1

February 1998

Page 2-26Auxiliar y Com ponents

 to provide background music for

— Telephone Adjuncts. Connect to telephones. For example, Direct

Station Selectors (DSSs) can enhance the capabilities of operator and
programming consoles, as well as a variety of headsets,
speakerphones, and specialty handsets (for users who are hard of
hearing or in noisy environments).

— Other Adjuncts. Connect directly to the control unit but are not

necessarily used systemwide, for example, a fax machine at its own
extension. (Many adjuncts, such as fax machines and modem s, can
either connect directly to the control unit from their own extensions, or
they can connect to a telephone at an extension.)

■ Adapters. Enable the connection of other equipment or certain telephone

company facilities. There are two kinds of adapters, classified according to
function:

— System Adapters. Connect adjuncts (for example, a loudspeaker

paging system) directly to the control unit and serve the whole system.

— Telephone Adapters. Connect adjuncts to telephones. For example, a

Multi-Function Module (MFM) connects an adjunct, such as an
answering machine, modem, fax machine, or special strobe, to an MLX
telephone.

MERLIN LEGEND Communications System Release 6.0

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2

■ Accessories. Different kinds of accessories can be added to the system to

555-660-118

provide more power or additional protection from power surges. There are
three types of accessories:

— Power Accesso ries. For example , an Uninterruptible Power Supply

(UPS) for the system or telephone power units to provide additional
power to individual telephones that require them for adjuncts.

— Protection Accessori es. For example, for grounding and protecting

special telephone connections (like a telephone located in a different
building) from lightning strikes and power surges.

— Miscellaneous Accessories. A power-failure transfer (PFT) telephone

used to make and receive calls in the event of a commercial power
failure or an Off-Premises Range Extender (OPRE) used for a single­line telephone located in a different building from the control unit and
more than 1000 feet away.

Issue 1

February 1998

Page 2-27Auxiliar y Com ponents

Figure 2–10

illustrates some of these components. For information about these

accessories, see Chapter 3, “System Components,” and the

Operations Reference

(not updated since Release 3.0).

Equipment and

MERLIN LEGEND Communications System Release 6.0

System Manager’s Guide

About the System

2

Telephone
Company

MERLIN
LEGEND
Communications
System
Control Unit

555-660-118

Telephone Company
Central Office
(CO)

Incoming Trunks

012

8 Analog Telephones (ATL)
44GS or LS Outside Lines/
408 GS/LS

8 MLX (Digital) Telephones

008 MLX

408

PROCESSOR

POWER

CAUTION

ON



OFF

Turn off
power before
inserting or
removing
modules

AG INPUT

FR
GND

February 1998

LAN

Telephony

Server

Your LAN

Issue 1

Page 2-28Auxiliar y Com ponents

MERLIN
LEGEND

Telephones
and Other
Equipment

Applications

PassageWay

Direct Connection

Auxiliary
Components

Building A

Solution

Headset

MLX

Telephone

Accounting

System

E

XPRESS

R

OUTE

Digital Adapter 1000

Data

Computer
and ISDN

Terminal
Adapter

Call

Music-on-Hold
Magic-on-Hold

Machine

O

H

or

Fax

L

D

MLX

Telephone

with MFM

Bell, Chime,
Strobe, etc.

Single-

Line

Phone

Uninterruptible

Power

Supply

Answering

Machine

“Attention”

Paging
System

Telephone

Voice

Messaging

System

Analog

Multiline

CTI Link

Application

POWER

OUT

657E

GROUND

IN

657E

OPRE

Single-

Line Phone

Building B

GAIN

ON

12
34

Figure 2–10. Auxiliary System Components

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About the System

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555-660-118

Data Comm u nication s Cap abilities 2

One of the imp or t a nt capabilities of the sys t em is that it can carr y bot h vo ic e an d
data communications simultaneou sly over the same lines. In addition, system
features used for voice communications, such as Automatic Route Selec tion,
calling restrictions, and speed dialing can also enhance the use of data
equipment.

NOTE:

For the most up-to-date information about data and video communications,
consult the

Data/Video Reference

Thus, the system allows you to use telephone lines for communicating not only
voices but data and video too. For example, a computer in New York can send
data files to a computer in San Diego. At your own company, your PC can
communicate with a gateway computer on a local area network (LAN) and gain
access to the network; or, you can call your office computer from your home
computer and send files back and forth between your home and office.

.

Issue 1

February 1998

Page 2-29Data Communications Capabilities

In addition, the system supports advanced network services that integrate voice
and data, such as group and personal videoconferencing.

A special type of extension, called a

data workstation

, is used for data
communications. It may include a telephone and always include s two types of
equipment:

■ Data Terminal Equipment (DTE). For example, a PC, data terminal,

printer, optical scanner, or video system.

■ Data Com m unicati on s Eq ui pm ent (DCE). For example, an internal or

external modem or an external Ascend Pipeline™ 50 ISDN terminal
adapter.

The DTE connects to the system via the DCE, which has capabilities similar to a
telephone. The DCE places the data call, maintains its connection, and terminates
the data call.

Sometimes a telephone is also part of a data workstation. The telephone can be
either an MLX or an analog multiline telephone that operates independently of the
data communications equipment (DCE). You can attach a modem to either an
analog or MLX telephone adapter.

video workstation

A

is a type of data workstation that allows group or desktop

videoconferencing.

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For high-speed data communications over Integrated Services Digital Network
Basic Rate Interface (NI-1 BRI, Release 4.0 and later) or Digital Signal 1 (DS1)
Primary Rate Interface (PRI) or T1 Switched 56 (Release 4.0 and later) facilities,
you can attach an ExpressRoute 1000 ISDN Term inal Adapter or another ISDN
(Integrated Digital Services Network) communications device to an MLX
extension. Group videoconferencin g may require ExpressRoute 1000s, or an
ISDN terminal adapter compatible with them, which may be provided with the
videoconferencing application. A modem or other communi ca tions device can
operate (with its data terminal, of course) from its own extension, with no
telephone at the extension.

Desktop videoconferencing, data transfer, and screen-sharing applications work
with Release 4.0 and later systems. They use any combination of PRI, NI-1 BRI,
and T1 Switched 56 data lines/trunks. Such systems can stand alone, and some
may also have an MLX telephone attached. Desktop videoconferencing systems
can use one MLX B-channel or two (for acceptable video quality). If the system
uses both MLX B-channels, you cannot use the phone connect ed to the same
MLX port as the videoconferencing application while the desktop
videoconferencing system is making or receiving calls. The use of two B-channels
is called

2B data

.

Issue 1

February 1998

Page 2-30Data Communications Capabilities

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System Components 3

This chapter describes the system’s basic hardware. It includes descriptions of
the control unit, MLX telephones, analog m ult iline telephones, single-line
telephones, system operator consoles, adjuncts and adapters for the system and
telephones, and power-related accessories.

Issue 1

February 1998

Page 3-1Control Unit

3

Control Unit 3

The control unit connects the telephone company’s outside trunks to the system’s
telephones and adjuncts. It is the heart of the system, managing the traffic within
the system (inside calls) and making telephone company facilities and outside
services available to your company. It includes the following components:

■ Carriers (up to three)

■ Processor module (one per system)

■ Power supply module (one per carrier)

■ Line/trunk and extension modules (up to 17 total in three carriers)

■ Cover that protects the unit

Carriers 3

The carriers in the system are the containers that hold the modules on which the
circuit boards and connections for lines/trunks and extensions (called

ports

) are located. There can be up to three carriers: one

expansion carriers.

basic carrier

jacks

or

and two

MERLIN LEGEND Communications System Release 6.0

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The carriers hold the modules in slots. For the purposes of system programming
and installation, 2-digit numbers indicate the slots, starting with 00 for the
processor module.

Issue 1

February 1998

Page 3-2Control Unit

Inside the back of each carrier is a component called the

the circuitry that makes it possible for the modules to “talk” to each other and for
the processor module to handle the traffic among the modules.

Every system has a

■ Power supply module (not numbered)

■ Processor module (slot 00)

■ Up to five line/trunk and extension modules (slots 01–05)

basic carrier

that holds the following modules in its slots:

If you need more trunks and/or extensions than can fit in the basic carrier, you can
connect up to two

expansion carriers

to the basic carrier. Like the basic carrier,
each expansion carrier’s leftmost slot holds a power supply module; the remaining
six slots hold line/trunk and extension modules. (The processor module in the
basic carrier serves the expansion carriers too.) The six slots for line/trunk and
extension modules in the expansion carriers are numbered as follows:

■ First expansion carrier (slots 06−11)

■ Second expansion carrier: slots (12−17)

Processor Module 3

The processor module is the “brains” of the system, a miniature computer that
controls system features and diagnostics, as well as the traffic among the
modules (see Figure 3–1
Station Message Detail Recording (labeled
and maintenance using a PC (labeled
by Lucent Technol ogies te chnicians only (this one is plugged shut)

). The processor module provides three jacks, one for

SMDR

ADMIN

backplane

, which holds

), one for system programming

), and one for software maintenance

.

The Personal Computer Memory Card International Association (PCMCIA)
interface slot on the processor module is where you insert a PCMCIA memory
card. A memory card is very similar to a floppy diskette used in a PC, but it is
about the size of a credit card. There are different types of memory cards used
with the system, each with a different label (see the next section for more
information).

The processor module has a single-character display for numbers and symbols
that help Lucent Technologies technicians to understand any problems with the
system software and to maintain the system. The module also has a red light that
indicates hardware failures.

MERLIN LEGEND Communications System Release 6.0

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Processor

Module Label

Error/Status Code Display

PCMCIA
Interface Slot

Debugging Port (plugged to prevent access)
Alarm Status Light
SMDR Port

ADMIN Port

Issue 1

February 1998

Page 3-3Control Unit

Figure 3–1. Processor Module

A super capacitor in the processor module provides backup power for the

system’s clock and its memory in case of power failure o r syste m shutd o wn. The
super capacitor retains data for four to five days.

PCMCIA Memory Card 3

The processor includes 4 MB of on-board memory that can be erased and written
over multiple times. A PCMCIA memory card can be used to install or upgrade the
system software into this memory. A memory card can also be used to back up
and restore system programming.

There are different types of memory cards, each about the size of a credit card.
Their labels indicate contents and function. Described below are three types of
PCMCIA memory cards that you may encounter. For more information, see

System Programming

■ Feature Upgrade Memo ry Card . Orange label with black bars; entitled

Forced Install a tion

■ Maintenance Upgrade Memory Card. Orange label; entitled

To fix problems in the system.

Card.

or contact your Lucent Tech nologies representative.

. To upgrade your system to the latest release.

Upgrade

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Issue 1

February 1998

Page 3-4Control Unit

■ Translation Memory Card. White label; entitled

up and restore your system programming as an alternative to using System
Programming and Maintenance (SPM). These procedures are faster when
you use the PCMCIA card.

Power Supply Module 3

The power supply module (Figure 3–2) provides power to the carrier, to each
telephone, and to most adjuncts (some adjuncts, such as fax machines, come
with their own power supplies and do not rely on the system). Each carrier
requires its own power supply module, installed in the carrier’s leftmost slot. The
current power supply module is XXX; it works with all releases of the system.

In some systems, you need extra power supplies to support your system
components as described in “Power-Related Hardware” on page 3–46

Translation Card

. To back

.

POWER

TEST PORTS

+5V

1

-5V

2

3

-48V

BATTERY BACK UP

ON/OFF

CAUTION

TURN OFF SWITCH THEN REMOVE
POWER CORD BEFORE INSERTING OR
REMOVING UNIT.

ATTENTION

ETEIGNEZ L'APPAREIL ET D´EBRANCHEZ
LA PRISE AVANT D'INTRODUIRE OU DE
RETIRER DES MODULES.

PRECAUCION

APAGUE EL INTERRUPTOR DESPUES
REMUEVA EL CABLE ELECTRICO
INSERTANDO O REMOVIENDO LA

AC INPUT

UNIDAD

VORSICHT

ZUERST ABSCHALTEN, DANN DAS
STROMKABEL ENTFERNEN, EHE DAS
GERAT EINGESETZT ODER ENTFERNT
WIRD.

Figure 3–2. Power Supply Module

Power Indicator (Green Light)

On/Off Switch
Power Connection
Grounding Screw

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Line/Trunk and Extension Modules 3

Line/trunk and extension modules have jacks for connecting telephone company
lines/trunks and extension wires to the control unit. The system supports 17 types
of line/trunk and extension modules. For maximum flexibility, some modules
support only lines/trunks, some only extensions, and some a combination of the
two.

Each module has a label that contains its name. As noted in Chapter 2, “About the
System,” the names of the modules identify their capacities and capabilities. The
first digit indicates the number of line/trunk jacks a module supports, while the last
two digits describe the number of extension jacks it supports. Following the
number may be letters that indicate the type of trunk or trunks it supports; for
example, LS for

loop-start

no letter following it supports loop-start trunks. The following are examples of
module names:

■ The 408 GS/LS MLX module provide s four trunk jacks supporting

ground-start and/or loop-start trunks and eight MLX extension jacks.

■ The 016 module (Release 4.0 and later only) provides 16 extension jacks

that, in this case, supply tip/ring (T/R) connections for single-line
telephones, modems, voice messaging systems that serve the system as a
whole, and other components.

and GS for

ground-start

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Page 3-5Control Unit

. A line/trunk module name with

The balance of this section presents some specific information about the modules
that connect extensions and the modules that connect lines/trunks. Figure 3–3
and Table 3–1

present summary information.

Modules Supporting Extensions 3

Table 3–1 describes the type of equipment that each module supports. This

section highlights some important points about extension modules.

NOTE:

Extension jacks connect to individual telephones and to adjuncts that are
attached to extensions. Some adjuncts and applications serve the whole
system and connect directly to line/trunk jacks.

Extension Jacks 3

While the jacks that support MLX extensions and the jacks that support analog
extensions may look the same, there is a major difference: an MLX extension jack
actually supports two extension numbers at each location served by the jack.

When you use an adapter called a Multi-Function Module in an MLX telephone,
you can connect a T/R device (for example, a modem, a fax machine, or an
answering machine) to that telephone. Even though a single extension jack on the

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module serves both the phone and T/R device, each device has its own extension
number and operates independently. In contrast, if you want to use both an
analog multiline telephone and a modem or other adjunct at the same location in
the system and give each one its own extension number, you must use
physical extension jacks on the module.

The Voice Announce to Busy feature, which allows a telephone user to hear a

voice page

(also called a

voice-announced call

same requirements as an adjunct that operates independen tly from the phone:
one extension jack (and no adjunct) for an MLX phone; two extension jacks for an
analog multiline telephone. Single-line telephones and cordless or wireless
telephones (which are analog multiline telephones) cannot receive voice pages .

NOTE:

There is a distinction between an extension jack (sometimes referred to as

logical ID

a

or

port

) and an extension number. In system programming, you
sometimes need to use port/jack/logical ID numbers rather than extension
numbers or system line/trunk numbers. Port/jack/logical IDs are numbered,
starting at 1, from the bottom of a module, and are fixed: they cannot be
changed. The extension and line/trunk numbers that people in the system
dial are flexible and can be programmed

Issue 1

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Page 3-6Control Unit

two

) while on another call, has the

.

Touch-Tone Receivers 3

In addition to jacks for connecting lines/trunks and extensions, various modules
also include components called

touch-tone receivers (TTRs

). These TTRs al low
the system to process touch tones entered by outside callers for special purposes,
such as automated attendants that answer calls from people with touch-tone
phones, voice mail systems, and remote access callers who call into the system
and use its services. When your Lucent T echnologies representative helps plan
your system, he or she makes sure that your modules have enough touch-tone
receivers to support your needs. When you add an application or adjunct to your
system, you sometimes have to make more TTRs available as well, for example,
tie trunks connecting networked systems (Release 6.0 and later systems,

.

Hybrid/PBX mode)

When you make a change to your system, consult your
Lucent Tech nologies representative for information about additional TTRs that
may be required.

016, 012, and 008 OPT Modules 3

Extension modules that support single-line telephones or off-premises telephones
(OPTs) must have ring generators so that the phones get electrical current for
their ringers. All 016 extension modules, which are compatible only with Release

4.0 and later systems, include built-in ring generators. Since late in 1993, 012 and
008 modules have come with ring generators built in. Earlier modules required

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Lucent Technologies technicians to install ring generators. If your 008 or 012
module has a ring generator, either added or built-in, you should see a label on
the front of the module telling you that the ring generator is included.

Also, 016, 012, and 008 modules allow the connection of T/R devices directly to
the control unit, without the need for a telephone and adapter at an extension. Y ou
can use them to hook up fax machines or PCs with modems, for example. For
more information, see “Adjuncts” on page 3–36

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.

NOTE:

The MERLIN LEGEND Mail

®

Voice Messaging System integrates a T/R
module (007 MLM) with a voice messaging system and is both a module
and an application.

Modules Supporting Lines/Trunks 3

Table 3–1 summarizes the modules that support lines/trunks. This section

describes a few module features and modules that need additional explanation.

NOTE:

Modes of operation affect features and hardware. For example, Direct
Inward Dial is supported only in Hybrid/PBX mode, so if your system uses
a different mode of operation, you do not need a DID module. For more
information about modes, see Chapter 2, “About the System.”

Power-Failure Transfer Telephones 3

When your system was planned, the Lucent T echnol ogies representative(s) made
sure that you had a module to support one or more power-failure transfer (PF T)
telephones. These telephones, which are connected to a special line/trunk jack,
allow you to make and receive calls during a commercial power failure. They do
not affect the capacity of the modules.

100D Module 3

The 100D module has only one line/trunk (called a
facility) but actually supports 23 or 24 “virtual” lines/trunks. These are called

channels

or

B-channels

, depending upon the type of service you choose. As
described in Chapter 2, “About the System,” you can program the DS1 facility to
provide either T1 or Primary Rate Interface (PRI) service on the 100D module.

NOTE:

The 100D module is not available in Behind Switch mode.

Digital Signal Level 1

or

DS1

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In addition, PRI and T1 support Group IV (G4) fax machines as well as desktop
and group videoconferencing.

PRI and T1 differ in some important ways:

■ Primary Rate Interface (PRI). PRI supports Integrated Services Access,

also called

Service Select i on

Shared Access for Switched Services (SASS)

. This feature, available from various telecommunications
companies, allow s m ult iple P R I serv ic es to use the sa me f ac ilities ,
eliminating the need to have dedicated, separate incoming and outgoing
B-channel groups. It selects the optimal service for each outgoing call,
allowing more than one service over each B-channel, including digital data
communications at speeds up to 64 kilobits per second.

NOTES:

1. In releases prior to 4.2, only AT&T services for Lucent
Technolo gies generic 4E SS, Luce nt Technologies 5ESS, and

other providers’ emulations of these services are supported.
Release 4.2 and later systems support services on NORTEL
DMS-100 generic BCS 36 serving local exchange carriers,
NORTEL DMS-250 generic MCI07 serving the MCI network, and
Digital Switch Corporation DEX 600E generic 500-39.30 serving
the MCI network.

February 1998

and

Call-by-Call

Issue 1

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2. For the DMS-100 or DMS-250 switch type, you must give special
instructions to the service provider to use variant NTNAPRI
(Northern Telecom North America Primary Rate Interface)
instead of the AT&T protocol. For the DEX600E switch type,
instruct the service provider to use the profile p250. For
additional information, refer to

System Planning

or contact your

Lucent Techn ologi es representative.

PRI supports

routing by dial plan

for DID-like call-handling. This is
especially appropriate for Caller ID services such as AT& T’s Station
Identification/Automatic Number Identification or the AT&T and MCI Dialed
Number Identification Service (DNIS) when your company subscribes.
DNIS routes incoming 800 or 900 calls according to customer-selected
parameters, such as area code, state, or time of call. For example, a
customer can specify that calls received from a particular area code be
routed to a specific individual or group responsible for accounts in the area.

The system’s PRI plat fo rm all o ws you to choose a ny combin ation of the
telecommunications company services listed below (your company must
subscribe to these).

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—MCI Services (Release 4.2 and later systems only). Domestic outgoing

long-distance and international voice calls; domestic incoming toll-free
800 voice calls; 900 service numbers; and private network voice calls as
well as 56- and 64-kbps restricted and unrestricted circuit-switched data
calls.

—Local DMS-100 Services (Release 4.2 and later systems only).

Available from local carriers: private network or tie trunk service for calls
between the MERLIN LEGEND Communications System and another
communications system (such as another MERLIN LEGEND
Communications System ); outbound WATS for domestic outgoing long­distance calls; inbound WATS for domestic toll-free incoming voice calls;
and, foreign exchange service.

— AT&T Services. Domestic outgoing long-distance and voice calls;

56-and 64-kbps circuit-switched data calls with routing by dial plan; 900
service numbers; outbound WATS for domestic outgoing long-distance
calls; and domestic toll-free incoming voice calls.

■ T1 Service. This service is cost-effective and convenient for many

businesses. Prior to Release 4.0, it provided voice operation only . In
Release 4.0 and later systems, T1 service provides voice operation or
high-speed data operation. A T1 channel must be programmed for either
voice or data operation and cannot be used for both.

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NOTE:

In Release 6.0 and later systems (Hybrid/PBX mode only), tandem
PRI lines can be used for networking. In this case, you order a T1
facility and program it for PRI operation. For more information, see

Network Reference

the

.

—Voice Operation. T1 voice channels can be configured to emulate

different types of trunks for voice (analog) use, according to business
needs. T1 can emulate loop-start, ground-start, Direct Inward Dial (DID,
Hybrid/PBX mode only), and tie trunks. In some areas, T1 service is less
expensive than leasing the equivalent number of standard telephone
company trunks. T1 also allows access to network subscriber options
such as toll-free domestic long-distance services.

You can connect the system’s control unit to another system’s control
unit using an emulated T1 tie trunk programmed for T1-type voice
operation. This arrangement provides voice communicat ion s or analog
data communications using modems.

— Data Operation. Available in Release 4.0 and later systems, T1

Switched 56 data operation allows switched data communications at 56
kilobits per second. The same high-speed connectivity can link a
MERLIN LEGEND Communications System to another; or it can link a

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MERLIN LEGEND Communications System to a DEFINITY system.
Whether used for digital tie-trunk emulation or not, a T1 data-operation
channel provides data communications only, not voice communications.

800 NI-BRI Module 3

Available for Release 4.0 and later systems, this module supplies eight line/trunk
jacks for connecting central office facilities that use the standard National ISDN 1
(Integrated Services Digital Network 1) protocol and the BRI (Basic Rate
Interface) access arrangement (this combination is abbreviated
digital facilities are available from COs in many areas.

Each facility actually includes two “virtual” lines, two B-channels for carrying voice
and data, as well as a third D-channel for handling signaling and maintenance.

NOTE:

The 800 NI-BRI module is not available in Behind Switch mode.

Summary 3

February 1998

NI-1 BRI

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). These

Figure 3–3 shows the modules; Table 3–1 lists the number of available jacks for

each module and presents a brief description of the equipment you can connect
to it.

NOTE:

Modules labeled “GS/LS” can accept ground-start trunks, loop-start trunks,
or a combination of both types of trunks.

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800 GS/LS-ID

800 NI-BRI

8 Central Office Basic Rate Interfaces

8 GS/LS-ID Outside Lines

555-660-118

400EM

4 E&M Tie Trunks

400

4 Outside Lines

Touch Tone Receivers

PFT Jack

Line/
Trunk
Jacks

Line/
Trunk
Jacks

Line/
Trunk
Jacks

Line/
Trunk
Jacks

PFT Jack

4-pair

Tie-
Trunk
Jacks

Line/
Trunk
Jacks

PFT Jack
Jacks
(DS1)

Tie-
Trunk
Jacks

400 GHS/LS/TTR

4 GS or LS Outside Lines

Touch Tone Receivers

Line/
Trunk
Jacks

PFT Jack

800 DID

8 Direct Inward Dialing Trunks

Line/
Trunk
Jacks

Line/
Trunk
Jacks

800

8 Outside Lines

PFT Jack

Line/Trunk
Jacks

Line/Trunk
Jacks

PFT Jack

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800 GS/LS

8 GS/LS Outside Lines

PFT Jack

Line/Trunk
Jacks

Line/Trunk
Jacks

PFT Jack

GS/LS-ID

008 OPT

8 Off-Premisis (Basic) Telephones (+4)

800

100D 400EM 400 400

008

8 Analog Telephones (ATL)

008 MLX

8 MLX (Dighital) Telephones

012

12 Basic Telephone Sets

800

NI-BRI

Off-Premises
Telephone
(OPT) Jacks

Off-Premises
Telephone
(OPT) Jacks

Analog 
Extension
Jacks

Digital 
Extension
Jacks

Basic
Telephone
Jacks

Figure 3–3. Line/Trunk and Extension Modules

GS/LS/TTR

016 with RING GEN.

16 Basic Telephone Sets

Basic
Telephone
Jacks

800 DID

408

4 Outside Lines/ 8 Voice Terminals

PFT Jack

Line/
Trunk
Jacks

Analog
Extension
Jacks

800

408 GS/LS

4 GS or LS Outside Lines/

8 Analog Telephones (ATL)

PFT Jack

Line/
Trunk
Jacks

Analog
Extension
Jacks

800

GS/LS

408 GS/LS

4 GS or LS Outside Lines/

8 Analog Telephones (ATL)

PFT Jack

Line/
Trunk
Jacks

Digital
Extension
Jacks

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Tabl e 3–1. Line/Trunk and Extens io n Mo d ule s

Module Line/Trunk Description

008 none Capacity: 8 analog extension jacks

Supports: Analog mult iline telephone s

008 MLX none Capacity: 8 digital extension jacks, each with 1 or 2 extens ions (each

extension is ass igned an individual extension number)
Supports: MLX extensions, including:

— MLX voice only
— MLX voice with Voice Announce to Busy
— MLX voice and ISDN terminal adapter
— MLX voice and Multi-Function Module (MFM) with T/R adjunct
— ISDN terminal adapter only
— Access devic e for dat a commun icati ons bet ween a PC on the syst em
and a high-speed Int ernet connection, con nection to remote node LAN
access server, or ISDN router*
— CTI (Computer Telephony Integration) link
— Videoconf erenci ng syste ms usi ng one jack and 2B da ta feat ure, MLX
telephone with some video systems*

008 OPT§none Capacity: 8 T/R extensions on 2-way voice transmission path with

support for telephones with message-wait ing lights, 2 TTRs
Supports: On-premises or off-pr em ises single-line tel ephones

012 none Capacity: 12 T/R extensions on 2-way voice transmission path with

support for telephones with message-wait ing lights, 2 TTRs
Supports: Singl e-line telephones; Lucent Technologies Attendant;
MERLIN Mail

®

VMS; Intuity™ CONVERSANT®; T/R adjuncts (such as

answering or fax machi ne); analog data devic es (such as modems)

016* none Capacity: 16 T/R extensions on 2-way voice transmission path with

support for telephones with message-wait ing lights, 4 TTRs
Supports: Singl e-line telephones; Lucent Technologies Attendant;
MERLIN Mail VMS; CONVERSANT; T/R adjun cts ( such as ans wering or
fax machine); anal og data devices (such as modems).

100D T1 or PRI Capacity: 24 channels (“virtual” l ines/trunks) for voice and analog data

or for digital data only (T1); or 23 B-channels for voice and data and 1
channel used for signaling (PRI). Suppor ts networking in Release 6.0
and later systems, Hybrid/PBX mode only.
Supports: See “100D Module” on page 3– 7
lines/trunks: loop-start, ground-start, tie , and Di rect Inward Dial (DID;
Hybrid/PBX mode only); can also supply subscri ber services. In
Release 4.0 and later, T1 can also provide high-speed data
communications and digitally emulated tie trunks for data
communications. PRI supports subscr iber services, allows high-speed
digital data communications, and includes special features.

†

‡

†

†

for details. T1 emulates 24

Continued on next page

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Page 3-13Control Unit

Table 3–1. Continued

Module Line/Trunk Description

800
NI-BRI*

¶

400

400EM Tie trunk Capacity: 4 ti e trunks. Supports networking in Release 6.0 and later

400
GS/LS

¶

408

408
GS/LS

408
GS/LS­MLX**

¶

800

800 DID DID, TTR Capacity: 8 lines/trunks, 2 TTRs
800

GS/LS
800 GS/

LS-ID

BRI Capacity: 8 BRI facili ties, each with 2 B-channels (“virtual” lines) for

voice and data and 1 channel used for signaling.
Supports: See “800 NI-BRI Module” on page 3–10

for details. Voice,
data, video, and other services at 64 kbps ov er standard ISDN
lines/trunks.

LS, TTR Capacity: 4 lines/trunks, 4 TTRs, 1 PF T tel ephone

Supports: 1 PFT telephone

systems, Hybri d/PBX mode onl y.

LS or GS,
TTR

Capacity: 4 lines/t runks, 4 TTRs, 1 PFT telephone
Supports: PFT telephone with ground-start (GS) button

LS Capacity: 4 lines/trunks, 8 extensions, 1 PFT telephone

Supports: Analog mult iline telephones; CMS; a PFT telephone

LS or G S Capacity: 4 lines/trunks, 8 extensions, 1 PFT telephone

Supports: Analog mult iline telephones; CMS; PFT telephone with GS

button

LS or G S Capacity: 4 lines/trunks, 1 PFT telephone, 8 digital exten sion jacks for

MLX extensions, in cluding:

— MLX voice only
— MLX voice with Voice Announce to Busy
— MLX voice and ISDN terminal adapter
— MLX voice and MFM with T/R adjunct
— ISDN terminal adapter only
— Access devic e for dat a commun icati ons bet ween a PC on the syst em
and a high-speed Int ernet connection, con nection to remote node LAN
access server, or ISDN router
— CTI (Computer Telephony Integration) link
— Videoconf erenci ng syste ms usi ng one jack and 2B da ta feat ure, MLX
telephone with some video systems*

†

‡

†

†

LS Capacity: 8 lines, 2 PFT telephones

Supports: 2 PFT telephones

LS or GS,
TTR

LS or G S Capacity: 8 lines/trunks, 2 PFT telephones; 2 TTRs

††

Capacity: 8 lines/t runks, 2 PF T telephones
Supports: 2 PFT telephones with ground-start (GS) button

Supports: Call er ID (ground-start trunks only), if you subscribe to c all er

identification from the local phone company), di splays the numbers of
incoming callers (from supported areas) on MLX display phones.

Issue 1

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Table 3–1. Continued

Module Line/Trunk Description

MERLIN
LEGEND
Mail
007

‡‡

MLM

* For Release 4.0 and later systems only

†
‡

§

¶

** For Release 2.0 and later systems only

††
‡‡

none Capacity: 7 i nternal, syst em -defined T/R jacks; 2 TTRs; internal remote

maintenance device; serial port for PC connection; detachable disk
drive for stori ng me ssages
Supports: MERLIN LEGEND Mail Voice Messaging System; is a
component of this app lication that provides the T/R jacks and other
portions of the application.

Not compatible with firmware vintage 29; use an earlier or later vintage.
For Release 5.0 and later systems only
The system software recognizes the OPT module as a 012 module. Even though the OPT module has

only 8 jacks, it uses 12 port s of capaci ty, thereby decreas ing overall extension capacity by 4
extensions for every OPT module.

Although these MERLIN® II modules are supported, the following ar e recommended for the system:
400 GS/LS, 408 GS/LS, 408 GS/LS-MLX, 800 GS/LS, and 800 GS/LS-ID.

For Release 3.0 and later systems only
The system software recognizes the MERLIN LEGEND Mail VMS module as a 012 module. Even

though the module has a maximum of 7 T/R jacks, including the modem jack, it uses 12 ports of
capacity in any of its thr e e co nfi gu r a tio ns .

Issue 1

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Page 3-14Telephones

Telephones 3

You can use MLX (digital) telephones as well as several different analog and
single-line telephones with the system. This section describes these telephones.

NOTE:

Telep hones that are located far from the control unit or that have other
equipment (

adjuncts

fax machine) may need additional power. A special power unit, described
in “Power-Related Hardware” on page 3–46

MLX Telephones 3

The communications system supports MLX-28D, MLX-20L , MLX-16 DP,
MLX-10DP, MLX-10D, MLX-10, MLX-5D, and MLX-5 digital telephones:

MLX telephones are available in black or white with factory-set buttons in English,
French, Hungarian, or Spanish (the MLX-10DP telephone is available with
English-language buttons only). In addition, all models have the following features
in commo n :

■ Line buttons (can also be programmed with features) with red and green

lights

) attached (for example, an answering machine or a

, supplies this need.

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■ Fixed-feature buttons (including Feature, HFAI, Mute, and Speaker)

■ Red Message light

■ Built-in speakerphone

■ Multi-function volume control for speakerphone, handset, and ringer

■ Telephone card tray for easy reference to frequently used features

■ 2-position adjustable desk stand

■ 4-pair modular line cord

■ Optional Multi-Function Module (MFM ) to connect tip/ring (T/R) equipment

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and alerting devices

MLX display telephones in particular offer enhanced services to telephone users
and to you in your role as system manager. MLX display telephones have the
following unique features:

■ Menu-driven telephone program mi ng

■ The ability to select and use features from the display

Issue 1

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Page 3-15Telephones

■ Support for Primary Rate Interface (PR I) calling number identification

services and the Caller ID feature

■ Display in English, French, or Spanish. (You can program the system to

provide all displays to MLX telephones in one of these languages; users at
MLX telephones can program their own telephones to display in English,
French, or Spanish, independently of the system language.)

A list of features specific to each MLX telephone follows.

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MLX-28D 3

The MLX-28D telephone (Figure 3–4) provides the following features:

■ Optional Direct-Line Console (DLC) operation

■ Display (2 lines by 24 characters)

■ 28 line buttons that can be programmed with features

■ 4 fixed display buttons, 4 unlabeled display buttons for screen selection,

and 8 fixed-feature buttons

■ Support of one or two Direct Station Selectors (DSSs) or PassageWay

Direct Connection Solution

MLX-28D telephones cannot be wall-mounted.

Issue 1

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Page 3-16Telephones

Handset

MLX-28D

Display Screen

Home Menu

v

v

Volume

Feature

Transfer

HFAI

Conf

Mute

Drop

Speaker

Hold

Inspct

More

123

GHI JKL

456

PQRS TUV WXYZ

789

OPER

*

ABC DEF

0

MNO

#

Volume Control

Fixed-Feature Buttons (8)

User Cards and Tray

Figure 3–4. MLX-28D Telephone

MLX-20L 3

The MLX-20L telephone (Figure 3–5) provides the following features:

Unlabeled Display Buttons (4)
Fixed-Display Buttons (4)

Button Labeling Cards

Line Buttons (28)

Message Light

Dialpad

■ System programming and optional DLC or QCC operation

■ Display (7 lines by 24 characters)

■ 20 line buttons that can be programmed with features

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■ 14 fixed and unlabeled display buttons and 8 fixed-feature buttons

■ Support of one or two DSSs or PassageWay Direct Connection Solution

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MLX-20L telephones cannot be wall-mount ed.
When used as a QCC, some restrictions apply. The line buttons are not

programmable, and the console cannot have an MFM. Later in this chapter,

“Queued Call Consoles” on page 3–30

Unlabeled Display

provides more information about QCCs.

Buttons (10)

Fixed-Display

Buttons (4)



Display Screen

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Page 3-17Telephones

Home

Menu

MLX-20L

Handset

v

Volume

Feature

HFAI

Mute

Speaker

Figure 3–5. MLX-20L Telephone

More

Inspct

Transfer

Conf

Drop

Hold

v

ABC DEF

123

MNO

GHI JKL

456

PQRS TUV WXYZ

789

OPER

0

#

*

Volume Control

Fixed-Feature Buttons (8)

User Cards and Tray

Button Labeling Cards

Line Buttons (20)

Message Light

Dialpad

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MLX-16DP 3

The MLX-16DP telephone (Figure 3–6) provides the following features:

■ Display (2 lines by 24 characters)

■ 16 line buttons that can be programmed with features

■ 4 fixed display buttons, 4 unlabeled display buttons for screen selection,

and 8 fixed-feature buttons

■ Support of PassageWay Direct Connection Solution, version 2.1 or later

MLX-16DP telephones cannot be wall-mounted.

NOTES:

1. The MLX-16DP telephone should not be an operator console.

2. The system recognizes the MLX-16DP as an MLX-28D. For this
reason, when programming the telephone, be careful not to assign
lines or features to buttons that do not actually exist on the telephone.
Programming instructions come with the equipment.

Issue 1

February 1998

Page 3-18Telephones

Handset

MLX-16DP

Display Screen

Home

Menu Inspct

Volume

v

Transfer

Conf

Drop

Hold

v

Feature

HFAI

Mute

Speaker

Figure 3–6. MLX-16DP Telephone

Unlabeled Display Buttons (4)

More

Fixed-

Display Buttons (4)

Button Labeling Card

Line Buttons (16)

ABC DEF

123

GHI JKL

456

PQRS TUV WXYZ

789

OPER

0

*

Message Light

MNO

Dialpad

#

Volume Control

Fixed-Feature Buttons (8)

User Cards and Tray


