Lucent Technologies MERLIN LEGEND Release 6.0 Installation and maintenance instructions

MERLIN LEGEND®
Communications System
Release 6.0
Network Reference
555-660-150
Comcode 108136011
Issue 1
February 1998

Copyright <Superscript>© 1998, Lucent Technologies Document 555-660-150
All Rights Reserved Comcode 108136011
Printed in USA February 1998
Notice
Every effort was made to ensure that the information in this bookwascomplete and accurate at the time of printing. However, information is subject
to change. See Appendix A, “Customer Support Information,” 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 programming 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 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. Lucent Technologies will not be responsible for any charges that result from such unau-
thorized use. For important information regarding your system and toll fraud, see Appendix A, “Customer Support Information.”
Federal Communications Commission Statement
This equipment has been testedand found to comply with the limitsfor a Class A digital device,pursuantto Part 15 of the FCCRules. These limits
are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may
cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in
which case the user will be required to correct the interference at his own expense. For further FCC information, see Appendix A, “Customer Sup-
port Information.”
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 règlement sur le brouillage radioélectrique édicté par le ministère des Communications du Canada.
Trademarks
DEFINITY, HackerTracker, MLX-5, MLX-5D, MLX-10, MLX-10D, MLX-10DP, MLX-16DP, MLX-20L, MLX-28D, and PassageWay, are
registered trademarks and Lucent Technologies is a trademark of Lucent Technologies in the US and other countries. NetPROTECT is a service
mark of Lucent Technologies in the US and other countries.
Novell and NetWare are registered trademarks of Novell, Inc.
Ordering Information
For more information about Lucent Technologies documents, refer to the section entitled, “Related Documents”.
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 apply. Outside the continental US, contact your local Lucent Technologies authorized representative.
Lucent Technologies Fraud Intervention
If you suspect you are being victimized by toll fraud and you need technical support or assistance, call Lucent Technologies National Customer
Care 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.”
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. Lucent Technologies 555-660-150
Comcode: 108136011
Issue 1, February 1998

MERLIN LEGEND Communications System Release 6.0
Network Reference
555-660-150
Issue 1
February 1998
Contents
Page iii
Contents
Contents iii
Figures ix
Tables xi
New Features and Enhancements xiii
■Release 6.0 Enhancements xiii
Prior Releases: Features and Enhancements xix
■Release 3.1 Enhancements xix
■Release 4.0 Enhancements xxii
■Release 4.1 Enhancements xxv
■Release 4.2 Enhancements xxvii
■Release 5.0 Enhancements xxix
IMPORTANT SAFETY INSTRUCTIONS xxxv
About This Book xxxvii
■Intended Audience xxxvii
■How to Use This Book xxxviii
■Terms and Conventions Used xxxviii
■Security xl
■Related Documents xl
■How to Comment on This Book xli
1 Introduction 1–1
■Networking Concepts 1–1
■Tandem Trunking and Tandem Switching 1–4
■Uniform Dial Plan 1–16
2 Call-Handling Scenarios 2–1
■Networking Guidelines 2–2
■Network Configuration Scenarios 2–12
3 Feature Interactions 3–1
■Account Code Entry 3–1
■Alarm 3–1
■Allowed/Disallowed Lists 3–1
■Authorization Code 3–2

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■Auto Answer All 3–2
■Auto Answer Intercom 3–2
■Auto Dial 3–2
■Automatic Route Selection (ARS) 3–3
■Barge-In 3–4
■Callback 3–4
■Caller ID 3–4
■Calling Restrictions 3–5
■Camp-On 3–5
■Computer Telephony Integration
(CTI) Link 3–6
■Conference 3–7
■Coverage 3–7
■Digital Data Calls 3–7
■Direct-Line Console (DLC) 3–7
■Direct Station Selector (DSS) 3–7
■Direct Voice Mail 3–7
■Directories 3–8
■Display 3–8
■Extended Station Status 3–8
■Forward and Follow Me 3–9
■Group Calling 3–10
■Hands Free Answer on Intercom (HFAI) 3–10
■HotLine 3–10
■Labeling 3–10
■Messaging 3–11
■Music On Hold 3–11
■Night Service 3–11
■Paging 3–12
■Park 3–12
■Personal Lines 3–12
■Pickup 3–12
■Pools 3–12
■Primary Rate Interface (PRI) and T1 3–13
■Queued Call Console (QCC) 3–14
■Reminder Service 3–14

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■Remote Access 3–14
■Signal/Notify 3–15
■Station Message Detail Recording (SMDR) 3–16
■Speed Dial 3–16
■System Renumbering 3–16
■Transfer 3–17
■Voice Announce to Busy 3–17
■Voice Messaging Interface (VMI) 3–18
4 Security 4–1
■Overview 4–2
■Facility Restriction Levels and Remote Access 4–5
5 System Management 5–1
■General Programming in Networks 5–2
■Non-Local Dial Plan Numbering 5–10
■Switch Identifiers 5–13
■Tandem PRI Facilities 5–16
■Uniform Dial Plan Routing 5–19
■Display Preferences for Intersystem Calls 5–25
6 Troubleshooting 6–1
■Troubleshooting Guidelines and Preparation 6–2
■Call to a Non-Local Extension: Unexpected Busy Tone 6–3
■Call to Non-Local Extension:
Silence or Fast Busy Tone 6–5
■Call to Non-Local Extension: Warble Tone (Error Tone) 6–10
■Calls to Non-Local Extensions:
Unexpected Busy Tone 6–12
■Call to Non-Local Extension Reaches Wrong Extension6–13
■Call to Non-Local Extension: Message from CO 6–14
■Transfer to Non-Local Extension Not Completed 6–14
■Transfer Call to Non-Local Extension Does Not Return 6–15
■Conference: Cannot Add Call 6–15
■DID Calls Not Completed 6–16
■ARS Calls Are Blocked 6–17
■Callback Does Not Work 6–18
■Network Call Transmission Level (Volume)
Too Low or Too High 6–18

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■MLX Displays: Network Call Display Problems 6–20
■PassageWay Call Display Problems 6–21
■ARS Calls Go to System
Operator (Unassigned Extension) 6–22
■DID or PRI Dial-Plan Routed Calls Not Completed 6–23
■Excessive Line Noise on Voice and Data Calls 6–23
■Station Message Detail Recording (SMDR) Reports
Do Not Include Calls across the Network 6–24
A Customer 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
■Other Security Hints A–16
■Limited Warranty and Limitation of Liability A–21
■Remote Administration and Maintenance A–22
B Sample Reports B–1
■Dial Plan Report B–6
■Non-Local Dial Plan Report B–9
■Tie Trunk Information Report B–10
■DID Trunk Information Report B–11
■General Trunk Information Report B–12
■DS1 Information Report B–13
■PRI Information Report B–14
■Remote Access (DISA) Information Report B–18
■Disallowed Lists Report B–19
■Access to Disallowed Lists Report B–19
■Automatic Route Selection Report B–20
■Extension Directory Report B–21

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■Extension Information Report B–22
■Error Log Report B–24
■Switch 56 Data Information Report B–25
GL Glossary GL–1
IN Index IN–1

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MERLIN LEGEND Communications System Release 6.0
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Figures
Page ix
Figures
1Introduction 1–1
1–1 Series Configuration 1–5
1–2 Star Configuration: Five Systems 1–7
1–3 Star Configuration: Three Systems 1–8
1–4 Series Configuration: Four Systems 1–11
1–5 Star Configuration: Three Systems 1–13
1–6 Star Configuration: Five Systems 1–15
1–7 Uniform Dial Plans 1–17
2 Call-Handling Scenarios 2–1
2–1 Scenario 1: Overview 2–15
2–2 Scenario 2: Company Floor Plans 2–29
2–3 Scenario 2: Overview 2–40
2–4 Scenario 3: Overview 2–51
2–5 Scenario 4: Overview 2–64
2–6 Scenario 5: Overview 2–77
4 Security 4–1
4–1 Facility Restriction Levels Applied to Network Calls 4–10

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Figures
Page x

MERLIN LEGEND Communications System Release 6.0
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Tables
Page xi
Tables
1Introduction 1–1
1–1 Tandem PRI Trunks versus Tandem Tie Trunks 1–10
2 Call-Handling Scenarios 2–1
2–1 UDP Extension Ranges: Scenario 1 2–19
2–2 Scenario 1: Facilities Planning, Calls Originating
within the Network and Going to the PSTN 2–20
2–3 Scenario 1: ARS Routing Summary, Calls Originating
within the Network and Going to the PSTN 2–21
2–4 Outside Calls: Scenario 1 2–23
2–5 Intersystem Calling: Scenario 1 2–26
2–6 Work Group Needs 2–31
2–7 Individual Needs 2–33
2–8 UDP Extension Ranges: Scenario 2 2–42
2–9 Scenario 2: Facilities Planning, Calls Originating
within the Network and Going to the PSTN 2–43
2–10 Scenario 2: ARS Routing Summary, Calls Originating
within the Network and Going to the PSTN 2–44
2–11 Outside Calls: Scenario 2 2–46
2–12 Intersystem Calling: Scenario 2 2–49
2–13 UDP Extension Ranges: Scenario 3 2–54
2–14 Scenario 3: Facilities Planning, Calls Originating
within the Network and Going to the PSTN 2–55
2–15 Scenario 3 ARS Routing Summary: Calls Originating
within the Network and Going to the PSTN:
Systems J & K 2–56
2–16 Scenario 3 ARS Routing Summary: Calls Originating
within the Network and Going to the PSTN:
Systems L & M 2–57
2–17 Outside Calls: Scenario 3 2–59
2–18 Intersystem Calling: Scenario 3 2–62
2–19 UDP Extension Ranges: Scenario 4 2–68
2–20 Scenario 4: Facilities Planning, Calls Originating
within the Network and Going to the PSTN,
Systems E and H 2–70

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2–21 Scenario 4: Facilities Planning, Calls Originating
within the Network and Going to the PSTN,
Systems F and G 2–71
2–22 Outside Calls: Scenario 4 2–73
2–23 UDP Extension Ranges: Scenario 5 2–80
2–24 Scenario 5: Facilities Planning, Calls Originating
within the Network and Going to the PSTN 2–81
2–25 Outside Calls: Scenario 5 2–83
2–26 Intersystem Calling: Scenario 5 2–85
4 Security 4–1
4–1 Calling Restrictions and Security Feature Planning in
Networks 4–3
4–2 Recommended Settings for Tie and Non-Tie Default
COR and Callback 4–9
4–3 Facility Restriction Levels 4–11
B Sample Reports B–1
B–1 Sample Report Pages B–1
B–2 System Reports B–2

New Features and Enhancements
Page xiiiRelease 6.0 Enhancements
MERLIN LEGEND Communications System Release 6.0
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New Features and Enhancements 0
Release 6.0 Enhancements 0
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 Communications Systems
can be networked with one another or with DEFINITY®Enterprise
Communications Server (ECS) and ProLogix™Communications Systems in
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, delay-start tie 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 System 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 extension
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/orPRI tandem

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New Features and Enhancements
Page xivRelease 6.0 Enhancements
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
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,
 . The local ARS tables would route this
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.
— 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 savings.
■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 switched telephone
network access:
— You order a point to point T1 facility from a service provider, then
use system programming to set it up for PRI signalling. As
necessary, a service provider can provide amplification on the T1
facility, but does not supply switching services.
— 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.

MERLIN LEGEND Communications System Release 6.0
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New Features and Enhancements
Page xvRelease 6.0 Enhancements
— 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.
■Voice Mail and Auto Attendant. Networked systems should have their
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 Calling 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, subsequent callers receive a busy signal.
Queue control applies to calls received on the following types of facilities:
■DID (Direct Inward Dialing)
■PRI facilities programmed for dial-plan routing
■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.
Internal calls that dial
 or  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 Position-
Busy Backup.

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New Features and Enhancements
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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.
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 the 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
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 system, which may originate at extensions in the Centrex system
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.

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New Features and Enhancements
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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
 instead of a dial-out code,
and a Pause character may be required after the
 . The Centrex service provider
determines whether the Pause is needed.
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, forwarding features,
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 single-
line 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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New Features and Enhancements
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Prior Releases: Features and Enhancements
Page xixRelease 3.1 Enhancements
MERLIN LEGEND Communications System Release 6.0
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Prior Releases: Features and
Enhancements 0
Release 3.1 Enhancements 0
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 allowed. If they are allowed, the system’s calling restrictions 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 setting for all extensions is restricted.

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Prior Releases: Features and Enhancements
Page xxRelease 3.1 Enhancements
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.
Default Pool Dial-Out Code
Restriction for All Extensions 0
The default setting for the pool dial-out code restriction (Hybrid/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.”