Lucent Technologies 555-650-116
MERLIN LEGEND
Communications System
Releases 5.0
Pocket Reference
Copyright © 1997 Lucent Technologies 555-650-116
All Rights Reserved Issue 1
Printed in USA June 1997
Ordering Information
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Call: Lucent Technologies BCS Publications Fulfillment Center at
1 800 457-1235
Write: Lucent Technologies BCS Publications Fulfillment Center
P. O. Box 4100
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For assistance when installing or programming the system:
Call: National Service Assistance Center (NSAC) at
1 800 628-2888 or your Lucent Technologies representative
Notice
While reasonable efforts were made to ensure that the information in this
document was complete and accurate at the time of printing, Lucent
Technologies can assume no responsibility for errors. Changes or
corrections to the information in this document may be incorporated into
reissues.
Trademarks
MERLIN LEGEND, 5ESS, ACCUNET, CONVERSANT, DEFINITY,
MERLIN MAIL, MERLIN II, MERLIN Identifier, MLX-10, MLX-10D, MLX16DP MLX-20L, MLX-28D, Magic On Hold, MEGACOM, MultiQuest,
MERLIN, and SYSTIMAX are registered trademarks, and 4ESS, AUDIX
Voice Power, Fax Attendant System, HackerTracker, PassageWay,
Picasso, Lucent Technologies Attendant, MERLIN PFC, MLX-5, MLX-5D,
MLX-10DP, , and TransTalk are trademarks of Lucent Technologies in the
U.S. and other countries.
Mirage, StarSet, Supra, and Supra NC are registered trademarks of
Plantronics, Inc.
PagePac is a registered trademark, and Powermate and Zonemate are
trademarks of DRACON, a division of Harris Corp.
Microsoft is a registered trademark and Windows is a trademark of
Microsoft Corporation.
IBM is a registered trademark of International Business Machines, Inc.
CLASS is a service mark of Bellcore.
NORTEL is a registered trademark and DMS a trademark of Northern
Telecom.
MCI, Prism, and Vnet are registered trademarks of MCI Communications.
Novell and NetWare are registered trademarks of Novell Corporation.
Contents
s
s
s
e
s
y
s
Release 1.1 Enhancements 1
Release 2.0 Enhancements 2
Release 2.1 Enhancements 4
Release 3.0 Enhancements 7
Release 3.1 Enhancements 10
Release 4.0 Enhancements 10
Release 4.1 Enhancements 12
Release 4.2 Enhancements 14
Release 5.0 Enhancements 16
Design Benefits 21
Environmental Specifications 22
Power and Grounding 25
Control Unit Interfaces 29
Network Interface Requirements 30
FCC Registration 30
DOC Registration 30
Hardware and Software Capacities 31
Ordering Codes 36
Control Unit Modules 66
Adjunct Summary 72
Power Supply Unit Load Requirement
■ Unit Load Calculation Rules 82
■ Unit Load Rating of System Module
■ Unit Load Rating of System Trunks, Telephone
82
84
and Adjuncts 85
System Feature Availability by Operating Mod
Telephone and Operator Console Feature
86
88
Reference Documents 102
Technical Addendum 105
■ Maintenance Error Codes 105
■ Module Component Histor
■ Telephone LEDs 136
■ Wiring Constraints 140
■ Installing SPM 141
■ Technical Support Telephone Number
124
144
i
Release 1.1 Enhancements
Refer to
Release 1.1 Notes
enhancements. Release 1.1 includes all Release 1.0 functionality plus the
enhancements described in the following sections.
Language Selection
This selection allows you to program the system for the display of prompts,
menus, and messages on MLX display telephones in English, French, or
Spanish. You can also program the following options in any of these
languages, independently of the system language:
■
Individual extensions with MLX telephones
■ System Programming and Maintenance (SPM)
■ System programming reports
■ SMDR report headers
MLX-10D
, MLX-20L, and MLX-28D display telephones and MLX-10
nondisplay telephones are available in three separate versions, with
factory-set buttons in English, Spanish, or French. (The MLX-10DP
available in the English version only.) In addition, user and operator guides
and telephone tray cards are available in all three languages.
Programming and Maintenance
Programming and maintenance enhancements include the following:
■ Additional Inspect capability in system programming
■
Editing capability (Backspace selection) in extension programming
■
Improvements to system reports
■
An access log that records the last 20 times maintenance or system
programming has been accessed
■
Longer (20-second) gap between ring cycles for programming mode and
Forced Idle tone
Operational
System operational enhancements include the following:
■ Automatic selection of an SA button when Conference is invoked
(Hybrid/PBX mode)
■ Prompting through Conference feature on MLX display telephones
■ Relocation of the More prompt on the MLX-20L display
■ Display of the number saved on a programmed Last Number Dial or
Saved Number Dial button when the button is inspected
SPM
SPM enhancements include operation in English, French, or Spanish; faster
backup and restore; and automatic on-screen display of reports as they are
created, with a Browse capability for reading the reports.
Equipment
Additional equipment includes the 8102 and 8110 analog telephones, four
headsets, two headset amplifiers, and a transparent protective cover for the
MLX-10 and MLX-10D telephones. The 8102 and 8110 telephones are also
compatible with Release 1.0.
for detailed descriptions of Release 1.1
is
1
PF Registration
PF registration number AS5USA-65646-PF-E is assigned by the FCC for
operating the MERLIN LEGEND
Communications System in Hybrid/PBX
mode in the United States. (The PF registration is also applicable to
Release 1.0 systems.)
Release 2.0 Enhancements
Refer to
Release 2.0 Notes
later enhancements. Release 2.0 includes all Release 1.1 functionality plus
the enhancements listed below.
Programming
Programming enhancements include the following:
■
Extension Copy is a feature that reduces programming time by allowing
the use of any extension as a template for programming another
extension or block of extensions through centralized telephone
programming.
■ Integrated Administration provides a single interface through Integrated
Solution III (IS III) for programming entries common to the MERLIN
LEGEND Communications System and AUDIX Voice Power
■ Any SPM Version 2.xx (where xx is replaced by numbers) provides a
Convert function for use in upgrading the system from Release 1.0 or
1.1. This function converts a backup file from a Release 1.0 or 1.1
system to Release 2.0 and later format, allowing reuse of existing
system programming on the upgraded system.
■ Forced idle reductions keep system interruptions at a minimum. In
general, the smallest necessary component is forced idle during
programming activities. For example, renumbering a single extension
idles only one extension. Only a few system-wide programming
activities, such as setting the system mode and system renumbering,
idle the entire system.
Operational
System operational enhancements include the following:
■ Coverage VMS Off is a feature that prevents incoming outside calls from
going to voice mail. (All other coverage remains active as programmed.)
The feature is programmed extension by extension, either through
extension programming or through centralized telephone programming.
■ A Night Service group can be programmed to include either extensions
or a calling group as members. However, you should not program both
individual extensions and a calling group into the Night Service group
because individuals will not have a chance to answer before calling
group members do.
■ When AUDIX Voice Power sends a Leave Message notification to an
extension, the system identifies the voice mail system as the sender of
the message. When the voice mail subscriber uses the Return Call
feature, the call goes to any available voice mail port, not just to the
specific port that generated the message. This reduces the chance of
getting a busy port.
for detailed descriptions of Release 2.0 and
.
2
■ Coverage receivers can call coverage senders and have the call receive
coverage treatment. If a receiver calls a sender for whom he or she is
covering, and the sender is busy or unavailable, the call proceeds to
other points of coverage. It does not come back to the receiver who
originated the call.
■ Enhancements to display prompts include automatic posting of a Do Not
Disturb message (for MLX display telephones or other multiline
telephones, a Posted Message button must be programmed for the
Not Disturb message to be posted automatically). When a user activates
Do
the Do Not Disturb feature, and confirmation messages when a user
activates Hold, Privacy, Saved Number Dial, and Transfer.
■ Direct Inward Dialing (DID) trunk emulation on a T1 facility provides up to
24 DID channels on a single DS1 interface, instead of requiring 24
separate physical trunks.
■ A telephone user can send a timed flash (switchhook flash) on a loop-
start trunk call on a System Access (SA) button.
Fax Attendant System
Fax Attendant is an application for sending and receiving fax messages; its
interface is similar to the voice mail interface provided by AUDIX Voice
Power. Fax Attendant System, which co-resides with AUDIX Voice Power
on the IS III platform, provides the following services:
■ Fax Call Coverage. Receives and holds messages for subscribers
whose fax machines are busy or out of paper. This service also allows a
subscriber to have a personal fax number without having a fax machine.
■ Fax Mail. Allows subscribers to create and use fax distribution lists,
send and receive fax messages, and record personal greetings for
incoming fax calls.
■ Fax Response. Prompts callers to select and receive faxes from a
customer-created menu of choices, using touch-tone responses.
408 GS/LS-MLX Module
The 408 GS/LS-MLX module (Releases 2.0 and higher only) combines four
line/trunk jacks for ground-start or loop-start trunks and eight extension
jacks for MLX telephones on a single module in the control unit.
Primary Rate Interface (PRI)
Primary Rate Interface (PRI) enhancements include the following:
■ Connectivity to the 5ESS
■ Multiple incoming calls to directory number
■ Call-by-Call Service Selection
■ Password handling for FTS2000
■ Extension ID as Calling Party Number for Automatic Number ID (ANI)
Generic 6
3
Maintenance
Maintenance enhancements include the following:
■ Clear descriptions of module test failures
■ Optional printing of hard copy of error logs
■ Display that correlates extension numbers to slot/port and logical ID
■ Display of the slots, trunks, and extensions that are maintenance busy
■ Internal digital switching element (DSE) loopback test for all modules
■ B-channel loopback test for MLX modules
■ B-channel line or call service states display
■ Error log entries for dual-port RAM errors
Release 2.1 Enhancements
Refer to
Release 2.1 Notes
enhancements. Release 2.1 includes all Release 2.0 functionality plus the
enhancements listed below.
Operational
System operational enhancements include the following:
■ When a call is forwarded to a multiline telephone that has an Auto Dial or
DSS button programmed for the forwarding telephone, the green light
next to the Auto Dial or DSS button for the forwarding telephone does
not flash.
■ People answering calls received on Cover buttons are allowed to
generate touch tones if their telephones are not outward- or tollrestricted.
■ Calls received on personal lines with Do Not Disturb on go immediately
to coverage instead of waiting for the coverage delay interval.
■ A call put on hold at a Cover button can be added to a conference by
someone who has a personal line for the call.
■ A call put on hold at a Cover button can be picked up by any person who
has a personal line for the call.
■ Calls that have been put on hold at a Cover, SA, Shared SA, or Pool
button can be picked up by a person who has a personal line button for
the call.
■ An inside call on hold at an SA button can be picked up and transferred
by any person with a
the held call.
■ Calls that are on hold awaiting transfer can be picked up by any user
who has a personal line for the call.
■ Beginning with Integrated Solution III Version 1.2, the automatic
reconciliation program that was run automatically at 3:00 a.m. has been
disabled and can be invoked manually from the User Maintenance
menu.
■ When a telephone is programmed for Forced Account Code Entry,
account codes do not have to be entered when using a programmed
Loudspeaker Paging button. In addition, an SMDR record is not
generated for calls made to paging ports.
for detailed descriptions of Release 2.1
Shared SA button corresponding to the button with
4
■ When an MLX telephone, other than an MLX-20L, is plugged into an
MLX port and the Personal Directory does not contain any entries, the
allocation of the Personal Directory resource is released. If there are any
entries in the Personal Directory, the Personal Directory allocation and
the entries in the Personal Directory are saved in the MLX port.
■ SMDR call records for calls made on PRI facilities are more accurate
than SMDR call records for calls made on non-PRI facilities. Outgoing
calls made on PRI facilities receive “answer supervision.” Consequently,
SMDR timing for calls made on PRI facilities begins when the call is
answered. Timing for calls made on non-PRI facilities begins when
dialing is completed. Therefore, an SMDR call record is not generated
when a call made on a PRI facility is not answered at the far end.
■ The Call Type field and the Called Number field on the SMDR report
have been changed for both the Basic and ISDN report formats.
■ An 012 port that is programmed as a
generic
voice messaging interface
(VMI) port can transfer an outside call to an outside number.
■ In a system where the transfer audible option is programmed for Music
On Hold and a music source is provided, outside callers who are
transferred to a calling group and are waiting in the queue or who are
parked or camped-on hear music while they are waiting. Internal callers
never hear music on hold while waiting in the calling group queue or
when they are parked, camped-on, or being transferred to another
extension.
Installation and Hardware
Installation and hardware enhancements include the following:
■ The control unit covers for the MERLIN LEGEND Communications
System are the same easy-to-use covers as those for the MERLIN
II
Communications System.
■ A new 012 (T/R) module [apparatus code 517G13 (28) or higher letter]
contains a built-in ring generator. The maximum ring equivalency
number (REN) supported is 2.2, and the module rings four ports at one
time. Bridging of single-line telephones is not supported due to poor
transmission quality.
■ A new 008 OPT module (labeled “with RING GEN.”) contains a built-in
ring generator. It rings four ports at a time.
■ Ferrite cores for the power supply modules are shipped from the factory
to comply with FCC Part 15 requirements.
■ 3129-WTWA (touch-tone outdoor telephone equipped with cast
aluminum housing and armored handset cord with bell ringers)
■ 3129-WRWA (rotary-dial outdoor telephone equipped with cast
aluminum housing and armored handset cord with bell ringers)
■ 3129-WAWA (auto dial outdoor telephone equipped with cast aluminum
housing and armored handset cord with bell ringers)
■ 3129-WNWA (nondial, automatic ringing on dedicated circuit outdoor
telephone equipped with cast aluminum housing and armored handset
cord with bell ringers)
5
Equipment and Operations
Equipment and operations enhancements include the following:
■ A new release (Version 2.16) of the System Programming and
Maintenance (SPM) software to support international use.
■ Support of PRI connection to DEFINITY
■ MLX-10DP telephone, identical to an MLX-10D, except that it provides a
jack for access to the PassageWay
Communications Systems
Solution and PassageWay Direct
Connection Solution application.
Additional Application Packages, Telephones, Adjuncts, and Adapter
Additional application packages, adjuncts, and adapter enhancements
include the following:
■ A Lucent Technologies Digital Announcer Unit, compatible with all call
management systems and tip/ring applications currently available for the
MERLIN LEGEND Communications System.
■ The HackerTracker
system software enhancement to the Call
Accounting System (CAS) detects abnormal calling activity by allowing
monitoring of facilities or authorization code usage.
■ A new digital Magic on Hold unit is available in three configurations:
— Basic Prerecorded Package
— Personalized Package
— Custom Production Package
■ The MERLIN
Identifier application enables people to receive, store, and
use information provided by the local telephone company, specifically,
the telephone number of a caller in an area where the service is also
supported.
■ An Off-Premises Range Extender (OPRE) supports off-premises
operation with an off-premises extension capability and extended range
operation for tip/ring devices as well as variable gain to improve voice
transmission levels.
■ PagePac
Plus Loudspeaker Paging Systems do not require system
adapters. The controller provides 8 built-in zones (expandable to 56
zones by using up to 3 16-zone expansion units), group zones, talkback,
night bell, operator override, tones, door supervision, microphone input,
and system access security codes as standard features.
■ PassageWay Solution (Release 1.0) software consisting of four
applications that run with Microsoft
an interface between an IBM
Windows 3.1 or later and provide
-compatible personal computer and the
MERLIN LEGEND system.
■ Four single-line telephones with memory buttons: 710, 715, 725, and
730.
■ Four specialty handsets compatible with all MLX telephones and the
3101-series, 3178-NHL, 8102, and 8110 single-line telephones.
6
Release 3.0 Enhancements
Release 3.0 includes all Release 2.1 functionality plus the enhancements
listed below.
Equipment
New hardware includes a variety of components. Additional details are
included elsewhere in this book.
■ CPU modifications include:
A processor running at 16 MHz with a 32-bit wide data bus
1.5 Mbytes of non-volatile (battery-backed) RAM
4.0 Mbytes of Flash ROM
PCMCIA memory card interface
A full-duplex 1200/2400 bps modem
Error/Status code display for maintenance support
■ An 800 GS/LS-ID line/trunk module delivers the calling party’s telephone
number to the customer premises (MLX display telephones only) if the
service is subscribed to by the customer and if it is supported by the
caller’s local telephone company.
■ Support for:
MDC 9000 (6-line, cordless)
MDW 9000 (6-line, cordless, wireless)
8101 (single-line telephone, desk or wall-mount, data/fax jack, selectable
positive disconnect)
2500YMGL and 2500 MMGL (single-line desk telephones, selectable
positive disconnect)
™
Still-Image telephone (for interactive display of still images)
Picasso
■
Videophone 2500 single-line phone with interactive video display
■
Pre-fabricated and pre-drilled backboard
Installation, Upgrade Administration, and Maintenance
These are the new MERLIN LEGEND Communications System capabilities:
■ SPM (Release 3.18) conversion of translations from Release 1.0, 1.1,
2.0, and 2.1 to 3.0
■ Remote operation at 1200/2400bps
■ Advice and feedback administration screens for new Release 3.0
functionality
■ PCMCIA Memory Card Interface (a Release 3.0 processor board
required) allowing:
System software installation
System software upgrade
800 GS/LS-ID port module firmware upgrade
Integrated backup and restore of translations
Automatic and manual options for backup and restore are available
on the system. Automatic backup can be scheduled weekly or
daily to fit the customer’s needs.
■ Inter-digit dialing timer values are administratable
■ Inspection of Lines/Trunks displays only those lines and trunks
configured on system rather than all 80 facilities
■ Stations and facilities in Maintenance Busy (both manual and automatic)
can be identified by the maintenance monitor
User Features
7
Security
The Remote Access feature allows people at remote locations to enter the
system by dialing the number of a line or trunk designated for remote
access. The system can be programmed to require the remote user to dial
a barrier code (a type of password) after reaching the system. In earlier
versions, the system-wide barrier code length is fixed at 4 digits. Release
3.0 allows a system-wide barrier code length ranging from a minimum of 4
digits to a maximum of 11 digits, with a default setting of 7 digits. SMDR
records are enhanced to provide information for remote access calls. If the
remote access call is received on a facility providing Caller ID information
(see below), the SMDR report can help trace the call.
Caller ID
Caller information (telephone number) is furnished to MLX display
telephones by an 800 GS/LS-ID module using the LS (loop-start) option.
This allows customers to screen calls prior to answering the phone, as well
as providing calling party information for use with various applications. This
function is available only when the customer subscribes to caller
identification service from the local telephone company, if the telephone
company supports that service.
Shared System Access (SSA)
A telephone may have up to 27 Shared SA buttons to expand extension
coverage.
Authorization Codes
The Authorization Code feature allows you to make calls using your calling
privileges when you are dialing from an extension other than your own.
When you enter your authorization code (ranging from 2 to 11 characters
and unique across the system), the privileges and restrictions assigned to
your home extension override the current restrictions at the host extension.
This includes toll restriction, outward restriction, Facility Restriction Level
(FRL), Allowed Lists, Disallowed Lists, Night Service Exclusion List, and
Dial Access to Pools. All other functions on the telephone are those of the
local telephone, not the home extension.
Authorization codes can also be used for the purposes of call accounting
through the SMDR printout. The SMDR account code field can hold the
authorization code extension number or the authorization code itself.
Direct Voice Mail
If your company has voice mail, this feature allows you to dial a co-worker’s
voice mailbox directly without ringing that person’s extension. Direct Voice
Mail is especially useful for transferring calls when a co-worker is not
available.
8
Additional Features
The status of Leave Word Calling (LWC) and Privacy are retained across
cold starts.
SM
Caller ID (CLASS
ICLID and PRI) are available on primary coverage and
return from transfer.
Additional Application Packages, Adjuncts, and Adapter
Enhancements
PassageWay
TM
Direct Connection Solution
PassageWay Direct Connection Solution (Release 2.0) is a Lucent
Technologies computer telephone integrated product that links a desktop
Windows PC to the MERLIN LEGEND’s MLX-10DP, MLX-16DP, MLX-20L,
or MLX-28D telephone. The Windows applications are: Lucent
Technologies Call (autodial/contact manager), Lucent technologies Buzz
(screen-pop applications), Lucent Technologies Set (station programming
interface), and Log Viewer (call log application). PassageWay Direct
Connection Solution (Release 2.0) is the version supported on MERLIN
LEGEND 3.0.
PagePal
PagePal connects several Lucent Technologies and other paging systems
to the MERLIN LEGEND Communications System. No other system
adapter is necessary for loudspeaker paging.
Fax Attendant 2.1.1
Fax Attendant Release 2.1.1., which co-resides with AUDIX Voice Power on
the IS III Release 1.2 platform, provides the same functionality as earlier
versions, plus the following enhancements:
■ Personal Fax Messaging. Inbound faxes can be stored until the
subscriber asks that they be printed, at any fax machine he or she
specifies, on company premises or off-site (when the subscriber
retrieves fax messages remotely).
■ Fax Mail. Allows subscribers to send fax messages, get fax messages,
record personal greetings, and program outcalling.
■ Fax Broadcast. Provides a simple way to send one fax to as many as
1000 fax numbers.
Call Accounting System (CAS) for Windows
This standalone version of CAS takes advantage of the easy-to-use
graphical environment offered by Microsoft Windows. Through data
communications, it also allows one CAS system to serve multiple business
sites.
Group Video Conferencing
Group video conferencing is supported over DS1 (Digital Signal Level 1)
facilities with PRI. (Video conferencing has been available since Release
2.0.)
9
Release 3.1 Enhancements
Release 3.1 includes all Release 3.0 functionality plus the toll fraud and
security enhancements listed below.
Star Codes
Star codes are dialable codes for services provided by the CO. The user
has to contract with the CO to get these codes activated.
With this release, users can now add a star (*) code to Allowed and
Disallowed Lists to help prevent toll fraud. The MERLIN LEGEND system
checks if the star codes are allowed. If allowed, the system then checks the
remaining dialed digits against the calling restrictions.
As a security enhancement, *03 requires a technician to enter a
maintenance password to access test procedures.
Second Dial Tone Timer
Users can program a delay period (Second Dial Tone Timer) during which
no dialing is allowed. This is useful in cases when the CO sends a second
dial tone (such as after a star code); the user may start dialing before
getting the second dial tone, creating a risk of toll fraud or misrouted calls. If
the timer is programmed and dialing is attempted during the delay, the call
is not completed.
Trunk-to-Trunk Transfer
This feature allows or disallows trunk-to-trunk transfer on a per-station
basis. The default setting for all stations is restricted (disallowed).
Toll Fraud Defaults
This feature changes these default settings:
■ No station or remote access user with a barrier code may dial access
to any pool.
■ Disallowed List 7 contains numbers most commonly abused for toll
fraud: 0, 10, 11, 1809, 1700, 1900, 976, 1ppp976 (p=any number
or character), *. Assign this list to extensions as needed.
■ VMI ports are maximally restricted. Outward restriction is on and they
are assigned to Disallowed List 7.
■ FRL settings for VMI ports is 0, for local calls is 2, and for toll calls is 3.
Release 4.0 Enhancements
Release 4.0 includes all Release 3.1 functionality plus the enhancements
listed below.
System Functionality
The MERLIN LEGEND Communications System functionality is enhanced
to include the following:
■ An expanded dial plan supporting up to 200 tip/ring devices.
■ National ISDN BRI service support for voice and data connectivity to the
CO. Data speeds are 14.4 kbps for analog data and up to 64 kbps for
digital data. Release 4.0 supports the IOC Package “S” and Multiline
Hunt service configurations.
10
■ Certified 2B-data video/data applications that connect to MLX ports and
use NI-1 BRI, PRI, or T1 Switched 56 network interfaces to make
outside connections.
NOTE:
The 008 MLX and 408 MLX modules must have firmware vintage other
than 29. An earlier or later vintage firmware is supported.
■ The use of T1 facilities for digital data transmission of up to 56 kbps per
T1 channel.
Equipment
New hardware includes two new modules. They are:
■ An 016 module supporting 16 tip/ring devices and four TTR’s. All 16
ports can ring simultaneously. The module's ringing frequency (default
20 Hz) can be changed through programming to 25 Hz for those
locations that require it.
■ An 800 NI-BRI module supporting high-speed data and video
transmission.
Maintenance Support
The R4.0 software includes a Provisioning Test tool that technicians can
use to verify the operational status of installed NI-1 BRI lines.
User Features
Product Enhancements
The following enhancements are added:
■ Delay Call Forwarding. Each user can program a Forwarding Delay
setting for calls that are forwarded using Forward, Remote Call
Forwarding, or Follow Me. The forwarding delay is the number of times a
call rings at the forwarding extension before the call is sent to the
receiver. During the delay, the user may screen calls by checking the
displayed calling number (if it is available). The delay can be set at 0 to 9
rings. The factory setting for Forwarding Delay is 0 rings (no delay).
■ Voice Announce on the QCC. The QCC operator can use the fifth Call
Button to announce a call on another user’s speakerphone if the
destination telephone has a Voice Announce-capable SA button
available. QCCs cannot receive Voice Announce calls; they are received
as ringing calls. The factory setting for the fifth Call button is Voice
Announce disabled.
■ Timebased option for overflow on Calling Group. If the Overflow
Threshold Time is set to a value between 1–900 seconds, calls that
remain in the Calling Group Queue for the set time are sent to the
number
Overflow Receiver. This is in addition to the
of calls that are in
the Queue (previously, the only way to send calls to the Overflow
Receiver). If the Overflow Threshold Time is set to 0, Overflow by time is
off. The factory-set time limit is 0 (overflow by time is off).
11
■ Downloadable Firmware for 016 T/R board and the NI-BRI board.
The PCMCIA technology introduced in Release 3.0 continues to support
these two new boards in Release 4.0 for installation and upgrade. A
Release 3.0 or later processor is required for PCMCIA technology.
Single-Line Telephone Enhancements
The following enhancements are added to the single-line telephones:
■ Disable Transfer. Through centralized programming, the system
manager can disable the ability to transfer calls by removing all but one
SA or ICOM button from the telephone.
■ No Transfer Return. When a handset bounces in its cradle, the
MERLIN LEGEND system interprets this as a switchhook flash and
attempts to transfer a call. This causes unintended ringing at the user’s
phone. In Release 4.0, a flash followed by an on-hook state when a dial
tone is present causes the call to be disconnected.
■ Forward Disconnect. All ports on 012 and 016 modules now send
forward disconnect to all devices connected to them when forward
disconnect is received from the CO. This is a non-administrable
operation.
System Security
Greater system security is achieved by requiring a 7-digit maintenance
password when using SPM to perform remote administration via the
Remote Access Feature.
Release 4.1 Enhancements
Release 4.1 includes all Release 4.0 functionality plus the enhancements
listed below. There are no hardware changes in Release 4.1.
■ Coverage Timers Programmed for Individual Extensions
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 system-wide 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 system-wide in previous
releases.
These enhancements allow the system manager to customize
coverage call delivery to match individual extensions’ call-handling
requirements.
12
■ Night Service Coverage Control
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 Mail 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
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.
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
Beginning with Release 4.1, the Forward, Follow Me, and Remote Call
Forward features are enhanced to remove the requirement that a call
must 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)
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).
13
The NI-1 BRI Provisioning Test 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 report analyzed results.
Release 4.2 Enhancements
Release 4.2 includes all Release 4.1 functionality plus the enhancements
listed below. There are no hardware changes or Release 4.2.
■ Additional Network Switch interface and Services Options for
ISDN Primary Rate Interface (PRI)
Release 4.2 of the system supports connectivity to MCI
exchange carrier (LEC) PRI services and to the following central office
switch types (in addition to the 4ESS and 5ESS switch types that are
currently available for AT&T Switched Network Services):
Nortel
DMS-100 Generic BCS 36 for local exchange carrier
services
or local
Nortel DMS-250 Generic MC107 serving the MCI network
Digital Switch Corporation DEX600E Generic 500-39.30 serving
the MCI network
Beginning with Release 4.2, the following MCI PRI and local exchange
carrier (LEC) PRI services (along with the 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
and international voice calls; for domestic outgoing 56-kbps
restricted, 64-kbps unrestricted, and 64-kbps restricted
circuit-switched data calls
❏ MCI VNet
voice calls; for 56-kbps restricted, 64-kbps restricted, and
64-kbps unrestricted circuit-switched data calls
❏ MCI 800 for domestic, toll-free, incoming voice calls
❏ MCI 900 service numbers
service for domestic outgoing long-distance
service for incoming and outgoing domestic and
LEC services for DMS-100 switch types:
❏ DMS Virtual Private Network service for calls between the
MERLIN LEGEND Communications System and another
communications 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.
14
❏ DMS Tie Trunk to provide private exchange call rating for
calls placed on a dedicated central office facility between
the MERLIN LEGEND Communications System and
another communications system (such as another MERLIN
LEGEND Communications System)
■ Improvements to Station Message Detail Recording (SMDR) and
Support for MERLIN LEGEND Reporter Application
The SMDR feature is enhanced to provide more details about calling
group agent activities and 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:
TALK Field. 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.
Coding of Calls on Reports. 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.
■ MERLILN LEGEND Reporter. 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 peak call load. MERLIN
LEGEND Reporter is an administrable option. The default is Off, in
which case the Release 4.0 SMDR reports are available. If this
option is set to On, the following reports are provided:
15
❏ Organization Detail Report
❏ Organization Summary and Trends Report
❏ Selection Detail Report
❏ Account Code Report
❏ Traffic Report
❏ Extension Summary Report
❏ Data Report
❏ Talk and Queue Time Distribution Report
❏ Time of Day Report
❏ ICLID Call Distribution Report
❏ Facility Grade of Service Report
■ Maintenance Enhancements
Change to Permanent Error Alarm
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,
Programming and Maintenance
.
Installation,
Enhanced Extension Information Report
Beginning with Release 4.2, the Extension Information Report
includes the Extension Status (ESS) and supervisory mode for
each extension.
Release 5.0 Enhancements
Release 5.0 includes all Release 4.2 functionality plus the enhancements
listed below.
■ Computer Telephony Integration (CTI)
Beginning with Release 5.0, a PassageWay
link from the MERLIN LEGEND Communications System to a LAN
server running Novell
Technologies-certified telephony applications to control MLX and
analog multiline telephone (BIS only) operations that are
the applications. The physical connection for the CTI link is an MLX
port on a 008 MLX or 408 MLX module on the MERLIN LEGEND
Communications System control unit and an ISDN link interface card
plugged into the customer’s server. The feature is available for
Hybrid/PBX mode systems only.
NetWare software allows Lucent
Telephony Services CTI
monitored
by
System Requirements for CTI link
Refer to Chapter 2 of the
instructions.
The following equipment and software are required:
16
Network Manager’s Guide
for detailed installation
■ An Intel i386 , Intel i486, or Pentium class computer with at least
16 megabytes of RAM. Additional memory may be needed if
additional applications will be running on the server machine.
■ NetWare Version 4.10 or Version 3.12
■ 5 megabytes of disk space available on the SYS (system)
volume
■ Telephony Services for NetWare software, Releases 2.21 or
later, installed
■ An Eicon/G. Diehl SCOM card for the CTI link
■ A free 8- or 16- bit ISA slot for the Eicon/G. Diehl SCOM card
■ System software Release 5.0 or later installed on the MERLIN
LEGEND Communications system
■ The MERLIN LEGEND configured in Hybrid/PBX mode
■ An MLX port board (using firmware Version 28 or later,
except
Version 29) installed in the MERLIN LEGEND
NOTE:
The 008 MLX and 408 MLX modules must have firmware
vintage other than 29. If the module has firmware 29,
administering a CTI link on the module is prevented. An earlier
or later vintage firmware is supported.
■ If the MERLIN LEGEND switch has only one MLX port board,
you also need System Programming and Maintenance (SPM)
software, Version 5.01, to administer the CTI link
■ One port on the MLX board is used for the CTI link. This port
cannot be a potential operator port (2,3,4,6,7,and 8 must be
available) or a console programming port
■ For a NetWare 3.12 installation, ensure that either
NWSNUT.NLM, Version 4.11 or later, and TUI.NLM, Version
1.04 or later, is obtained from Novell and installed in the
SYS:\SYSTEM directory
NOTE:
To obtain these NLMs from Novell, access either the Novell web
site (http:\\www.novell.com) or the Novell ftp site
(ftp.novell.com). First, download IPXRT4.EXE and follow the
directions in the associated readme file. Then, download
NWSNUT.NLM and TUI.NLM.
17
■ Basic Call Control. 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
Hanging up calls
Hold and retrieving a call on hold at the user’s extension
Conference calls from a DLC or QCC operator
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. Screen pop occurs when the calling number, called
number, or other user-defined identifier (such as an account code that
a voice-response unit prompts the caller to dial) is used to display a
screen associated with the calling 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 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 Communications
System
Remote Access
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:
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
a DLC is used as a regular operator console and not assigned as
a CTI link extension, it is
non-monitored
monitored
.
DLC. When
Calls to a QCC non-monitored DLC do not initiate screen pop at
the operator position., but when an operator directs a call to an
18
extension using a CTI application, caller information does initiate
screen pop.
Calls transferred from Cover buttons on non-monitored DLCs do
not initiate screen pop at the destination extension.
■ HotLine Feature. The Release 5.0 HotLine feature is designed for
retail sales, catalogue sales, and other types of businesses and
organizations. It is available in all three modes of system operation. The
feature allows a system manager to program a single-line telephone
extension 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. At HotLine extensions, calls
cannot be transferred, put on hold, or conferenced.
Personal Speed Dial codes can be programmed at 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 one-time 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.
Any type of inside or outside line that is normally available to a singleline telephone can be assigned to a HotLine extension. Generally, the
HotLine telephone does not receive calls, and its line should be set to
No Ring.
!
SECURITY ALERT:
A HotLIne single-line telephone accesses a loop-start line, the line
should provide and be programmed for Reliable Disconnect. If it is not,
a caller may be able to stay on the line after the initial call and access
an outside line.
■ Call Center Enhancements. Release 5.0 and later systems include
Group Calling features that enhance call center operations.
Most Idle Hunt Type. 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.
19
Delay Announcement Devices. 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 primary
and secondary announcements. 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.
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.
Enhanced Calls-in-Queue Alarm Thresholds. Three Calls-in-
Queue Alarm thresholds can be set to more clearly indicate the
real-time status of the queue according to the behavior of
programmed Calls-in-Queue Alarm buttons. In earlier releases,
only one Calls-in-Queue Alarm Threshold setting is available to
activate the LEDs at programmed Calls-in-Queue Alarm buttons
for a calling group.
Using all three levels, the system manager sets Threshold 1 to
the lowest value, Threshold 2 to a middle value, and Threshold
3 to the highest value. A Calls-in-Queue Alarm button indicates
the severity of the alarm conditions in the following ways:
— 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.
20
— If the number of waiting calls is greater than or equal to
the Threshold 2 value but less than the Threshold 3
value, 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 (Direction 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. If two values are the same, then the result is two
alarm levels. The factory setting is one call for all three
thresholds.
An external alert only signals when the number of calls in the
queue exceeds the programmed Threshold 3 value.
MLX-5 and MLX-5D Telephones. The MLX-5 nondisplay and
the 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 MLX5D 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.
Design Benefits
Modular components allow easy, cost-effective growth in both size and
function. For upgrades from the MERLIN LEGEND Communications
System, all wiring and analog MERLIN system telephones can be reused.
For upgrades from the MERLIN II Communications System, certain trunk
and extension modules can also be reused. The modules are 800, 400,
400EM, 012, 008, and 408.
Menu-driven system programming maintains the customer’s command of
business operations.
Built-in 1200/2400-bps modem allows fast access to the system by
customers, Lucent Technologies personnel, or authorized dealers from a
remote location for system programming and maintenance.
Flexible mode of operation saves upgrade costs by allowing system
configuration in one of three modes: Hybrid/PBX, Key, and Behind Switch.
(The default setting on the 3.0 processor board is Hybrid/PBX.)
Connectivity to other systems in the Behind Switch mode optimizes
existing resources by allowing the system to work as part of another
MERLIN LEGEND Communications System, System 25, System 75,
System 85, DEFINITY 75/85, or other communications system. The control
21
unit can connect to another system’s control unit via either an off-premises
telephone (OPT) line or an analog or digital tie trunk.
Digital 2.048-MHz bus supplies a 64-kbps channel on each of the 216 time
slots.
68EC020 Motorola CPU running at 16 MHz with zero wait states provides
fast system performance.
Memory data retention saves time by ensuring that system and extension
programming information is retained for 5 days, depending on the system
configuration, in case of power failure or system shutdown.
Integrated voice and data capabilities allow users to talk while
transmitting data at speeds up to 64 kbps.
DS1 interface can be configured for connection of either T1 or PRI for
basic call control with the 4ESS
or 5ESS PRI service specifications.
Basic Rate interface (BRI) S/T protocol supports premier digital multiline
(MLX) telephones with superior display capabilities and supports the ISDN
terminal adapter Data Module for the connection of adjuncts.
Environmental Specifications
The control unit requires a regulated environment and can be located in any
room or closet that is temperature-controlled and clean. Do not mount the
control unit where it will be exposed to direct sunlight.
In addition, the control unit should not be co-located with air conditioning or
ventilation units, compressors, fans and blowers, heaters, arc welders, or
other machinery that produces electrical interference.
The control unit is mounted on a Lucent Technologies pre-drilled
backboard.
Once installed, it is important to keep the control unit site clear of hazards,
such as stacked paper or boxes, that block ventilation. Installing any
machinery in the vicinity of the control unit should be avoided. If any
pollution-producing work (such as sanding or spray painting) is to be done
in the area, care should be taken to protect the unit.
Table 1–4 gives the environmental specifications for the control unit.
Control Unit
Fully loaded basic carrier
Weight: 45 lb. (20.4 kg)
Dimensions: 14 in. wide x 23 in. high x 12 in. deep
Fully loaded 2-carrier system (basic carrier plus 1 expansion carrier)
Weight: 90 lb. (40.8 kg)
Dimensions: 25 in. wide x 23 in. high x 12 in. deep
Fully loaded 3-carrier system (basic carrier plus 2 expansion carriers)
Weight: 135 lb. (61.2 kg)
Dimensions: 37 in. wide x 23 in. high x 12 in. deep
Mean Time Between Failures
(35.6 cm x 58.4 cm x 30.5 cm)
(63.5 cm x 58.4 cm x 30.5 cm)
(94 cm x 58.4 cm x 30.5 cm)
22
(mean/average time the system is expected to operate before any type of
failure occurs)
2.4 years
For a system configured with 24 trunks and 50 stations (extensions)
23
Backboard Mounting Hardware Requirements
This refers to the types of wall construction to which the backboard will be
attached.
Type of material Mounting Hardware
Wood surface Wood screws
Concrete surface, brick, cinder block Masonry anchors
Plaster, plasterboard Toggle bolts
Sheet-metal surface Sheet-metal screws
Hardware has a combined pullout force of 650 lb. (294.8 kg). When
mounting to sheet-metal walls, attach to structural members.
Location
Within 5 ft. (1.5 m) of dedicated AC power outlet (1 plug per carrier)
Within 1000 cable ft. (304.8 m) of telephones
Heat Dissipation
Fully loaded basic carrier 500 Btu/hr (35 cal/sec)
Fully loaded 2-carrier system 1000 Btu/hr(70 cal/sec)
(basic carrier with one expansion carrier)
Fully loaded 3-carrier system 1500 Btu/hr(105 cal/sec)
(basic carrier plus two expansion carriers)
Power Requirements
Basic carrier 117 VAC 60 Hz -15% to 10% 5.4A
2-carrier 117 VAC 60 Hz -15% to 10% 10.8A
3-carrier 117 VAC 60 Hz -15% to 10% 16.2A
Temperature/Humidity Range
40°–104°F (4°–40°C)
20%–80% relative humidity
Ventilation Clearances
1 in. (2.5 cm) on right and left sides
Radio Frequency Interference, Tolerance 1.0 V/m
Electromagnetic Interference (EMI)
To reduce electromagnetic interference emissions (possible interference
problems with handheld telephones), check the date of manufacture of the
CPU (517A27) units. If they were manufactured before April 1993, replace
them with a later version.
24
!
CAUTION
■ For the control unit, do not use an AC outlet that is controlled by a wall
switch or some other switch.
■ Use an approved ground (AC receptacle for 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 motors).
■ Do not place anything on top of carriers.
■ Do not install the control unit under any device that may drip fluid, such
as an air conditioner.
■ Each auxiliary power unit requires one outlet.
■ Do not expose the control unit to moisture, corrosive gases, dust,
chemicals, spray paint, or similar materials.
Power and Grounding
Proper power and grounding are essential for correct and safe functioning
of the system.
Power Specifications
The system control unit plugs into a 117-VAC outlet. To avoid accidental
disconnection of the system, this outlet should not be controlled by a wall
switch.
Each carrier unit requires its own power supply. Each power supply
requires a maximum current of 5.4 amps. Therefore, if expansion carrier
units are added to the system, extra AC outlets may be needed.
Grounding Requirements
Proper grounding of the installation site protects the system against the
following:
■ Lightning
■ Power surges
■ Power crosses on outside lines/trunks
■ Electrostatic discharge (ESD)
The local telephone company is responsible for providing protection of
outside lines/trunks at the entrance to the site. The protection should
consist of the following:
■ Carbon blocks or gas discharge tubes connected to an approved ground
■ Adequate bonding of the outside line/trunk protector ground and the
power company ground
!
WARNING
An improper ground can result in equipment failures and service outages.
Verify that the AC power uses an approved ground for its primary ground,
that all voltage-limiting devices are grounded to an approved ground, and
that the ground is one of the approved grounds listed below.
25
The following is a list of approved grounds, starting with the most preferred:
■ Building steel
■ Acceptable water pipe, must be a metal, underground water pipe at least
½-in. (30.4 cm) in diameter, and in direct contact with the earth for at
least 10 ft. (3 m).
— It must be electrically continuous so that the protector ground is
connected. (Check for insulated joints, plastic pipe, and plastic water
meters that might interrupt electrical continuity.)
— A metallic underground water pipe must be supplemented by the
metal frame of the building, a concrete-encased ground, or a ground
ring.
— Other local metal underground systems or local underground
structures such as tanks and piping systems
— Rod and pipe electrodes, a 5/8-in. (1.6-cm) solid rod or ¾-in.
(1.9-cm) conduit or pipe electrode driven to a minimum depth of 8 ft.
(244 cm)
— Plate electrode, a minimum of 2 square ft. (61 square cm) of metallic
surface exposed to the exterior soil
■ Concrete-encased ground, which must be an electrode, consisting of
one of the following:
— At least 20 ft. (6.1 m) of one or more steel reinforcing rods, each
being at least 0.5-in. (1.27 cm) in diameter
— 20 ft. (6.1 m) of bare copper conductor not smaller than #4 AWG,
encased in 2 in. (5 cm) of concrete. This electrode must be located
within and near the bottom of a concrete foundation or roofing that is
in direct contact with the earth.
— Ground ring, consisting of at least 20 ft. (6.1 m) of bare copper
conductor not smaller than #2 AWG, encircling the building. The
ground ring must be in direct contact with the earth and buried at least
2.5 ft. (77 cm) below the earth’s surface.
!
WARNING:
Do not use a metal underground gas piping system. This is a safety risk.
For most power surges, the following standard grounding requirements
provide adequate lightning and surge protection:
■ Properly wired/grounded/bonded outside line protectors
■ Properly wired/grounded AC outlet
■ Properly grounded single-point ground bar
■ Properly wired connection between single-point ground and power
supplies
Additional Power Surge Protection
The 391A1 power supply has built-in AC line protection. This built-in
protection handles almost all situations.
Occasionally, additional protection may be needed if the customer is
located in a heavy lightning area. A 147A surge protector can be connected
to the system to limit surges from the AC lines and outside lines. One 147A
protector provides protection for four outside lines. Up to three 146A
protectors can be added to the 147A to provide protection for a maximum of
16 outside lines. For more than 16 lines, additional 147A protectors are
required.
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