Lucent Technologies MERLIN LEGEND Release 7.0 Technical manual

555-670-112
Comcode 108370289
Issue 1
April 1999
MERLIN LEGEND®
Communications System
Release 7.0
System Planning

Notice
Every effort has been made to ensure that the information in this guide is complete and accurate at the time of printing. Information, however, is subject
to change. See Appendix A, “Customer Support Information,” in
System Programming for important information.
Your Responsibility for Your System’s Security
Toll fraud is the unauthorized use of your telecommunications system by an unauthorized party—for example, persons other than your company’s
employees, agents, subcontractors, or persons working on your company’s behalf. Note that there may be a risk of toll fraud associated with your
telecommunications system, and, if toll fraud occurs, it can result in substantial additional charges for your telecommunications services.
You and your system manager are responsible for the security of your system, such as programming and configuring your equipment to prevent
unauthorized use. The system manager is also responsible for reading all installation, instruction, and system administration documents provided with
this product in order to fully understand the features that can introduce risk of toll fraud and the steps that can be taken toreduce that risk. Lucent
Technologies does not warrant that this product is immune from or will prevent unauthorized use of common-carrier telecommunication services or
facilities accessed through or connected to it. Lucent Technologies will not be responsible for any charges that result from such unauthorized use. For
important information regarding your system and toll fraud, see Appendix A, “Customer Support Information,” in
System Programming .
Federal Communications Commission Statement
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case the user
will be required to correct the interference at their own expense. For further FCC information, see Appendix A, “Customer Support Information,” in
System Programming .
Canadian Department of Communications (DOC) Interference Information
This digital apparatus does not exceed the Class A limits for radio noise emissions set out in the radio interference
regulations of the Canadian Department of Communications.
Le Présent Appareil Numérique n’émet pas de bruits radioélectriques dépassant les limites applicables aux
appareils numériques de la classe A préscrites dans le réglement sur le brouillage radioélectrique édicté par le
ministère des Communications du Canada.
Year 2000 Compliance
The MERLIN LEGEND Communications System is certified to be Year 2000 compliant. Additional information on this certification, and other issues
regarding Year 2000 compliance, is available online at http://www.lucent.com/enterprise/sig/yr2000.
Trademarks
5ESS, AUDIX, CONVERSANT, CentreVu, DEFINITY, Magic On Hold, MERLIN, MERLIN LEGEND, MERLIN Mail, PARTNER, PassageWay, MLX-10,
MLX-10D, MLX-10DP, MLX-16DP, MLX-20L, MLX-28D, MLS-6, MLS-12, MLS-12D, MLS-18D, MLS-34D, SYSTIMAX, TransTalk, and Voice Power are
registered trademarks and 4ESS, Intuity, Lucent Technologies, and Prologix are trademarks of Lucent Technologies in the US and other countries.
Acculink, ACCUNET, MEGACOM, MulitiQuest, MLX-5, MLX-5D, and NetPROTECT are registered trademarks of AT&T.
Microsoft, Windows, Windows NT, and MS-DOS are registered trademarks of Microsoft Corporation.
ProComm and ProComm Plus are registered trademarks of DataStorm Technologies, Inc.
Supra, Supra NC, StarSet, and Mirage are registered trademarks of Plantronics, Inc.
UNIX is a registered trademark of UNIX System Laboratories, Inc.
PagePac is a registered trademark and Powermate and Zonemate are trademarks of DRACON, a division of Harris Corporation.
Okidata is a registered trademark of Okidata Corporation.
Pipeline is a trademark of Ascend Communications, Inc.
Intel and Pentium are registered trademarks of Intel Corporation.
Apple and Macintosh are registered trademarks of Apple Computer, Inc.
IBM is a registered trademark of International Business Machines, Inc.
Novell and NetWare are registered trademarks of Novell Corporation.
CLASS is a servicemark of Bellcore.
Copyright © 1999, Lucent Technologies 555-670-112
All Rights Reserved Comcode 108370289
Printed in USA Issue 1
April 1999

Ordering Information
For more information about Lucent Technologies documents, refer to the section entitled “Related Documents” in “About This Guide” in System
Programming
.
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. Outside the
continental US, contact your local Lucent Technologies authorized representative.
Network Engineering Group
For assistance in designing a private network, call the Network Engineering Group at 1-888-297-4700.
Lucent Technologies Corporate Security
Whether or not immediate support is required, all toll fraud incidents involving Lucent Technologies products or services should be reported to Lucent
Technologies Corporate Security at 1-800-821-8235. In addition to recording the incident, Lucent Technologies Corporate Security is available for
consultation on security issues, investigation support, referral to law enforcement agencies, and educational programs.
Lucent Technologies Fraud Intervention
If you suspect you are being victimized 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,” of
System Programming .
Call: BCS Publications Center
Voice 1-800-457-1235 International Voice 317-322-6791
Fax [phone] International Fax [phone]
Write: BCS Publications Center
2855 North Franklin Road
Indianapolis, IN 46219-1385
Order: Document No. 555-670-112
Comcode: 108370289
Issue 1, April 1999

MERLIN LEGEND Communications System Release 7.0
System Planning
555-670-112
Issue 1
April 1999
Contents
Page iv
Contents
New Features and Enhancements xxi
■Release 7.0 Enhancements
(April 1999) xxi
MLS and Enhanced Tip/Ring (ETR) Telephone
Support xxi
Expanded Digital Endpoint Connectivity xxii
Voice Announce on Idle Only Option on MLX
Telephones xxii
Priority Call Queuing xxiii
Calling Party Name on Caller ID xxiii
MLX Headset Operation xxiv
Touch-Tone or Rotary Signaling xxiv
Abandoned Call Information Reported to
MERLIN LEGEND Reporter xxiv
Prior Releases: Features and Enhancements xxv
■Release 6.1 Enhancements
(August 1998) xxv
Private Networking xxv
Service Observing xxviii
WinSPM xxviii
Windows NT Driver xxviii
■Release 6.0 Enhancements
(February 1998) xxix
Private Networks xxix
Group Calling Enhancements xxx
Centrex Transfer via Remote Call Forwarding xxxii
Authorization Codes and
Remote Call Forwarding xxxii
■Release 5.0 Enhancements
(June 1997) xxxiii
Computer Telephony Integration (CTI) xxxiii
HotLine Feature xxxv
Group Calling Enhancements xxxvi
MLX-5 and MLX-5D Telephones xxxvii

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■Release 4.2 Enhancements
(June 1997) xxxviii
Additional Network Switch and Services Options
for ISDN Primary Rate Interface (PRI) xxxviii
Improvements to Station Message Detail
Recording (SMDR) and Support for
MERLIN LEGEND Reporter Application xxxix
MERLIN LEGEND Reporter xl
Maintenance Enhancements xl
■Release 4.1 Enhancements
(June 1997) xl
Coverage Timers Programmed for
Individual Extensions xli
Night Service with Coverage Control xli
Night Service Group Line Assignment xli
Forward on Busy xlii
Maintenance Testing for BRI Facilities that Are
Part of Multiline Hunt Groups (MLHGs) xlii
■Release 4.0 Enhancements
(March 1996) xliii
Support for Up to 200 Extensions xliii
Support for National ISDN BRI Service xliii
New Control Unit Modules xliii
Support for 2B Data Applications xliv
Support for T1 Switched 56
Digital Data Transmission xliv
Forwarding Delay Option xliv
Voice Announce on Queued Call Console xliv
Time-Based Option for
Overflow on Calling Group xlv
Single-Line Telephone Enhancements xlv
Seven-Digit Password for SPM xlv
■Release 3.1 Enhancements
(March 1996) xlv
Call Restriction Checking for Star Codes xlvi
Trunk-to-Trunk Transfer Set for Each Extension xlvi
Programmable Second Dial Tone Timer xlvi
Security Enhancements xlvi
■Release 3.0 Enhancements
(August 1994) xlviii

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Equipment xlviii
Installation, Upgrade Administration, and Maintenance xlix
User Features xlix
Additional Application Packages, Adjuncts, and
Adapter Enhancements li
■Release 2.1 Enhancements
(August 1994) lii
Operational lii
Installation and Hardware liii
Equipment and Operations liv
Additional Application Packages, Telephones,
Adjuncts, and Adapter liv
■Release 2.0 Enhancements
(October 1992) lv
Programming lv
Operational lvi
Fax Attendant System™ lvii
408 GS/LS-MLX Module lvii
Primary Rate Interface (PRI) lvii
Maintenance lviii
■Release 1.1 Enhancements
(October 1992) lviii
Language Selection lviii
Programming and Maintenance lix
Operational lix
SPM lix
Equipment lix
PF Registration lix
About This Guide lxi
■Intended Audience lxi
■How to Use This Guide lxi
■Terms and Conventions Used lxii
Typographical Conventions lxiv
Product Safety Advisories lxiv
■Security lxiv
■Related Documents lxv
■How to Comment on This Guide lxvii

MERLIN LEGEND Communications System Release 7.0
System Planning
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Contents
Page vii
1Before You Begin 1-1
■Reviewing System Components 1-1
■Confirming the Location of the Control Unit 1-2
Grounding Requirements 1-4
Electrical Noise/Radio-Frequency Interference 1-5
■Requirements for Supporting CTI Applications 1-6
Environmental Specifications 1-9
■Obtaining Telephone Company Information 1-10
■Obtaining User Information 1-10
■Obtaining a Floor Plan 1-12
2 Control Unit Configuration 2-1
■Planning Module Placement 2-1
Capacity for Lines/Trunks 2-2
Capacity for Extensions 2-2
Control Unit Diagram—Module Placement 2-4
■Recording System Operating Conditions 2-7
Programming Equipment 2-8
System Mode 2-9
Language Selection 2-10
Automatic Maintenance Busy 2-10
Set System Date 2-11
Backup 2-11
System Consoles 2-12
Second Dial Tone Timer 2-12
Applications 2-12
■Numbering the System 2-13
Identifying Extension Jacks 2-14
System Renumbering 2-36
Updating Planning Information 2-40
3Lines/Trunks 3-1
■Overview 3-1
■Identifying Line/Trunk Jacks 3-2
Module Types and Line/Trunk Jack Types 3-2

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Incoming Line/Trunk Type 3-7
Jacks for Auxiliary Equipment 3-9
Function Information 3-10
■Selecting Line/Trunk Options 3-11
Loop-Start Reliable Disconnect 3-12
Outmode Signaling 3-13
Toll Type Prefix Required 3-14
Hold Disconnect Interval 3-14
QCC Operator to Receive Calls
(Hybrid/PBX Mode Only) 3-15
QCC Queue Priority Level (Hybrid/PBX Mode Only) 3-15
Pools (Hybrid/PBX Mode Only) 3-16
Remote Access 3-17
DS1 Connectivity (100D Module) 3-23
Tie Trunks 3-40
DID Trunks (Hybrid/PBX Mode Only) 3-44
NI-1 BRI Connectivity 3-46
■Assigning Lines/Trunks 3-52
■Assigning Telephone Buttons 3-53
Telephones in Hybrid/PBX Mode 3-54
Telephones in Key and Behind Switch Mode 3-61
Direct-Line Consoles 3-72
4 Features 4-1
■Telephone and Extension Features 4-2
Queued Call Console (Hybrid/PBX Mode Only) 4-3
Pool Dial-Out Code Restriction
(Hybrid/PBX Mode Only) 4-4
Calling Restrictions 4-4
Forced Account Code Entry 4-5
Microphone Operation 4-6
Remote Call Forwarding 4-6
Fax Message-Waiting Receiver 4-7
Trunk-to-Trunk Transfer 4-8
HotLine 4-9
Extension Copy 4-9
Cover Ring Delay 4-13

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System Planning
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Service Observing 4-14
■Operator Features 4-16
Direct-Line Console 4-16
Queued Call Console (Hybrid/PBX Mode Only) 4-17
Direct Station Selector 4-23
■Group-Assigned Features 4-24
Call Pickup Groups 4-25
Group Paging 4-25
Coverage 4-26
Group Calling 4-30
■System Features 4-40
Transfer Options 4-41
Camp-On Return Time 4-42
Call Park Return Time 4-43
Automatic Callback 4-43
Extension Status 4-43
Station Message Detail Recording (SMDR) 4-44
Inside Dial Tone 4-46
Reminder Service Cancel 4-46
Calls to Unassigned Extensions 4-47
Recall Timer 4-48
Interdigit Timers 4-49
Rotary 4-49
Allowed Lists 4-49
Disallowed Lists 4-51
Call Restriction Summary 4-52
Night Service 4-53
Labeling 4-56
Automatic Route Selection (Hybrid/PBX Mode Only) 4-59
5Data Communications 5-1
■Overview 5-1
■Terminology 5-2
■About Data and Video Communications 5-4
Connectivity 5-4
Data Stations 5-5
Modem Data Stations 5-6

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Modem Data-Only 5-8
MLX Voice and Modem Data 5-8
Other Supported Data Terminals 5-13
Other Resource Groups 5-13
Video Systems 5-14
■Planning Overview 5-16
■Assigning Extension Jacks 5-19
Guidelines for Digital Extension Jacks 5-20
Modem Data-Only Stations 5-21
ISDN Terminal Adapter Data-Only Stations 5-22
Local Host Computer Data Stations 5-22
LAN Workstations 5-23
Video Systems 5-24
■Assigning Lines/Trunks to Data and Video Stations 5-25
Assigning Line Buttons in Hybrid/PBX Mode 5-29
Assigning Pools and Lines/Trunks
(Hybrid/PBX Mode Only) 5-31
Assigning Line Buttons in Key Mode 5-32
■Assigning Features to Data Stations 5-33
Pool Dial-Out Code (Hybrid/PBX Mode Only) 5-35
Calling Restrictions 5-35
Forced Account Code Entry 5-36
ARS Facility Restriction Level
(Hybrid/PBX Mode Only) 5-36
System Speed Dial Codes 5-37
■Creating Data Hunt Groups 5-37
Guidelines 5-38
■Digital Data/Video Stations 5-39
6Modifications 6-1
■Preparation 6-1
■Adding to the System 6-2
7Upgrading 7-1
■Upgrading to Release 7.0 7-2
Upgrade Procedure 7-3
■Release 7.0 Forms 7-5

MERLIN LEGEND Communications System Release 7.0
System Planning
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Page xi
ACustomer Support Information A-1
■Support Telephone Number A-1
■Federal Communications Commission
(FCC) Electromagnetic
Interference Information A-1
■Canadian Department of Communications (DOC)
Interference Information A-2
■FCC Notification and Repair Information A-2
■Installation and Operational Procedures A-4
■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
Physical Security, Social Engineering, and
General Security Measures A-11
Security Risks Associated with Transferring
through Voice Messaging Systems A-12
Security Risks Associated with the Automated
Attendant Feature of Voice Messaging Systems A-14
Security Risks Associated with the Remote
Access Feature A-15
■Other Security Hints A-16
Educating Users A-16
Educating Operators A-17
Detecting Toll Fraud A-17
Establishing a Policy A-18
Choosing Passwords A-19
Physical Security A-19
Limiting Outcalling A-19
■Limited Warranty and Limitation of Liability A-20
Limitation of Liability A-21
■Remote Administration and Maintenance A-21
B System Forms B-1
C Data Forms C-1

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System Planning
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Page xii
D T1/PRI Planner D-1
EDS1 Connectivity Ordering E-1
FUnit Load Calculation F-1
■Unit Load Rules F-1
Unit Loads for the Hybrid/PBX Mode F-2
Unit Loads for Key or Behind Switch Mode F-2
■Calculating Unit Loads F-2
■Unit Load Worksheet F-3
G NI-1 BRI Review G-1
HNI-1 BRI Provisioning H-1
■Lucent Technologies 5ESS Switch Translations H-2
ISDN Capability Package “S” H-2
Series Completion Feature Translations H-4
■Northern Telecom DMS-100 Switch Translations H-20
ISDN Capability Package “S” H-20
Multiline Hunt Group Feature Translations H-22
■Siemens SSC EWSD Switch Translations H-30
ISDN Capability Package “S” H-30
Series Completion Feature Translations H-33
INetwork Engineering Forms I-1
GL Glossary GL-1
IN Index IN-1

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Figures
Figures
1 Before You Begin
1-1 System Configuration for Support of CTI Applications 1-7
1-2 Sample Floor Plan 1-14
2 Control Unit Configuration
2-1 Sample Control Unit Diagram 2-7
2-2 Extension Numbers for 2-Digit Numbering Plan 2-37
2-3 Extension Numbers for 3-Digit Numbering Plan 2-37
2-4 Extension Numbers for Set Up Space Numbering Plan 2-38
3 Lines/Trunks
3-1 Partially Completed System Form 2c 3-9
3-2 Factory-Set Assignment, MLX Telephones
(Hybrid/PBX Mode) 3-54
3-3 Factory-Set Assignment, Analog Multiline Telephones
(Hybrid/PBX Mode) 3-55
3-4 ETR-34D Telephone (Hybrid/PBX Mode) 3-56
3-5 ETR-18/18D Telephone (Hybrid/PBX Mode) 3-56
3-6 ETR-6 Telephone (Hybrid/PBX Mode) 3-57
3-7 MLS-34D Telephone (Hybrid/PBX Mode) 3-57
3-8 MLS-18D Telephone (Hybrid/PBX Mode) 3-57
3-9 MLS-12/12D, TransTalk, or Business Cordless 905
Telephone (Hybrid/PBX Mode) 3-58
3-10 MLS-6 Telephone (Hybrid/PBX Mode) 3-58

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Figures
3-11 Factory-Set Assignment, MLX Telephones (Key and
Behind Switch Modes) 3-62
3-12 Factory-Set Assignment, Analog Multiline Telephones
(Key and Behind Switch Modes) 3-63
3-13 ETR-34D Telephone (Key Mode) 3-64
3-14 ETR-18/18D Telephone (Key Mode) 3-64
3-15 ETR-6 Telephone (Key Mode) 3-65
3-16 MLS-34D Telephone (Key Mode) 3-65
3-17 MLS-18D Telephone (Key Mode) 3-65
3-18 MLS-12/12D, TransTalk, or Business Cordless 905
Telephone (Key Mode) 3-66
3-19 MLS-6 Telephone (Key Mode) 3-66
3-20 ETR-34D Telephone (Behind Switch Mode) 3-66
3-21 ETR-18/18D Telephone (Behind Switch Mode) 3-67
3-22 ETR-6 Telephone (Behind Switch Mode) 3-67
3-23 MLS-34D Telephone (Behind Switch Mode) 3-68
3-24 MLS-18D Telephone (Behind Switch Mode) 3-68
3-25 MLS-12/12D Telephone (Behind Switch Mode) 3-69
3-26 MLS-6 Telephone (Behind Switch Mode) 3-69
3-27 MLX Direct-Line Console 3-73
3-28 Analog Direct-Line Console 3-74
4 Features
4-1 Completed ARS Worksheet—Automatic Route
Selection Tables 4-62
4-2 Example 1: Form 3f, 6-Digit Table 4-65
4-3 Example 2: Form 3f, Area Code Table 4-66
4-4 Subpattern Example 4-68
4-5 Other Digits Example 4-69
4-6 Digit Absorption Example 4-70

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Figures
5 Data Communications
5-1 Analog Voice and Modem Data 5-7
5-2 Modem Data-Only 5-8
5-3 MLX Voice and Modem Data 5-9
5-4 MLX Voice and ISDN Terminal Adapter Data 5-10
5-5 ISDN Terminal Adapter Data-Only 5-11
5-6 Personal and Group Video Connections 5-16

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Figures

MERLIN LEGEND Communications System Release 6.1
Installation 555-661-140
Issue 1
August 1998
Tables
xvii
Tables
1 Before You Begin
1-1 Environmental Requirements 1-2
1-2 Control Unit Space Requirements 1-4
1-3 Employee Communications Survey:
Description of Questions 1-11
2 Control Unit Configuration
2-1 Power Supplies and MLX, ETR, and
MLS Telephones 2-6
2-2 Application Ports 2-15
2-3 Modules with Touch-Tone Receivers 2-19
2-4 Touch-Tone Receivers Required by Voice
Messaging Systems 2-19
2-5 System Requirements for Touch-Tone Receivers 2-20
2-6 TTRs Required for Primary Delay Announcement
Devices 2-21
2-7 TTRs Required for Secondary Delay
Announcement Devices 2-21
2-8 Maximum Number of Operator Positions 2-24
2-9 Application Ports 2-33
3 Lines/Trunks
3-1 Line/Trunk Jack Types 3-3
3-2 Codes for Line/Trunk Jacks 3-6
3-3 Line Compensation Settings 3-27

MERLIN LEGEND Communications System Release 6.1
Installation 555-661-140
Issue 1
August 1998
Tables
xviii
3-4 Line Compensation Settings 3-33
3-5 NI-1 BRI Timers 3-51
4 Features
4-1 Features that Can Be Copied 4-10
5 Data Communications
5-1 Data Station Configurations 5-12
5-2 Data Forms 5-17
5-3 System Forms 5-18
5-4 Extension Jack Types 5-20
6 Modifications
6-1 Adding New Trunks 6-5
6-2 Adding Auxiliary Equipment 6-5
6-3 Adding New Extensions 6-6
7 Upgrading
7-1 Planning Forms 7-5
F Unit Load Calculation
F-1 Power Supplies and MLX, ETR, and MLS TelephonesF-2

MERLIN LEGEND Communications System Release 7.0
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IMPORTANT SAFETY INSTRUCTIONS
The exclamation point in an equilateral triangle is intended to alert the
user to the presence of important operating and maintenance
(servicing) instructions in the literature accompanying the product.
To reduce the risk of fire, electrical shock, and injury to persons, follow these basic safety
precautions when installing telephone equipment:
■Read and understand all instructions.
■Follow all warnings and instructions marked on or packed with the product.
■Never install telephone wiring during a lightning storm.
■Never install a telephone jack in a wet location unless the jack is specifically designed
for wet locations.
■Never touch uninsulated telephone wires or terminals unless the telephone wiring has
been disconnected at the network interface.
■Use caution when installing or modifying telephone lines.
■Use only Lucent Technologies-manufactured MERLIN LEGEND Communications
System circuit modules, carrier assemblies, and power units in the MERLIN LEGEND
Communications System control unit.
■Use only Lucent Technologies-recommended/approved MERLIN LEGEND
Communications System accessories.
■If equipment connected to the analog extension modules [008 (ATL), 408 (LS-ATL), and
408 GS/LS], the MLX telephone modules (008 MLX, 408 GS/LS-MLX, 408 GS/LS-ID-
MLX, and 016 MLX), or the ETR telephone modules (412 LS-ID-ETR and 016 ETR) is
to be used for in-range out-of-building (IROB) applications, IROB protectors are
required.
■Do not install this product near water—for example, in a wet basement location.
■Do not overload wall outlets, as this can result in the risk of fire or electrical shock.
■The MERLIN LEGEND Communications System is equipped with a 3-wire grounding-
type plug with a third (grounding) pin. This plug will fit only into a grounding-type power
outlet. This is a safety feature. If you are unable to insert the plug into the outlet, contact
an electrician to replace the obsolete outlet. Do not defeat the safety purpose of the
grounding plug.
■The MERLIN LEGEND Communications System requires a supplementary ground.
■Do not attach the power supply cord to building surfaces. Do not allow anything to rest
on the power cord. Do not locate this product where the cord will be abused by persons
walking on it.

MERLIN LEGEND Communications System Release 7.0
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■Slots and openings in the module housings are provided for ventilation. To protect this
equipment from overheating, do not block these openings.
■Never push objects of any kind into this product through module openings or expansion
slots, as they may touch dangerous voltage points or short out parts, which could result
in a risk of fire or electrical shock. Never spill liquid of any kind on this product.
■Unplug the product from the wall outlet before cleaning. Use a damp cloth for cleaning.
Do not use cleaners or aerosol cleaners.
■Auxiliary equipment includes answering machines, alerts, modems, and fax machines.
To connect one of these devices, you must first have a Multi-Function Module (MFM).
■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.
■For your personal safety, DO NOT install an MFM yourself.
■ONLY an authorized technician or dealer representative shall install, set options, or
repair an MFM.
■To eliminate the risk of personal injury due to electrical shock, DO NOT attempt to
install or remove an MFM from your MLX telephone. Opening or removing the module
cover of your telephone may expose you to dangerous voltages.
SAVE THESE INSTRUCTIONS
!WARNING: