Lucent Technologies 9400, 8400 User Manual

DEFINITY

®

Enterprise Communications Server

Release 8.2
Overview

555-233-002
Issue 1
April 2000

Copyright  2000, Lucent Technologies
All Rights Reserved
Printed in U.S.A.

Notice

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

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 to reduce that
risk. Lucent Technologies does not warrant that this product is immune from or will prevent
unauthorized use of common-carrier telecommunication services or facilities accessed
through or connected to it. Lucen t Technologies w ill not be responsi bl e f or an y charg es tha t
result from such unauthorized use.

Lucent Technologies Fraud Intervention

suspect that you are bein g vic timized

If you

by toll fraud and you need technical support or
assistance, cal l Technical Service Center Toll Fra ud Interve ntion Hotl ine at 1 800 64 3-2353
or contact your Lucent Representative.

Federal Communications Commission Statement
Part 68: Statement

Part 68: Ans wer-Su pervision Signali ng. Allo wing th is equi pment to be oper ated in a man ner
that does not provide proper answer-supervision signaling is in violation of Part 68 rules.
This equipment returns answer-supervision signals to the public switched network when:

■ Answered by the called station

■ Answered by the attendant

■ Routed to a recorded announcement that can be administered by the CPE user

This equipment returns answer-supervision signals on all DID calls forwarded back to the
public switched telephone network. Permissible exceptions are:

■ A call is unanswered

■ A busy tone is received

■ A reorder tone is received

Lucent Technologies attests that this registered equipment is capable of providing users
access to interstate providers of operator services through the use of access codes.
Modification of this equipment by call aggregators to block access dialing codes is a
violation of the Telephone Operator Consumers Act of 1990.

This equipment complies with Part 68 of the FCC Rules. On the rear of this equipment is a
label that contains, among other information, the FCC registration number and ringer
equivalence number (REN) for this equipment. If requested, this information must be
provided to the telephone company.

The REN is used to determine the quantity of devices which may be connected to the
telephone line. Excessive RENs on the telephone line may result in devices not ringing in
response to an incomi ng call . In mos t, b ut not al l areas , the s um of REN s should not exceed

5.0. To be certain of the number of devices that may be connected to a line, as determined
by the total RENs, contact the local telephone company.

NOTE:

REN is not required for some types of analog or digital facilities.

Means of Connection

Connection of this equipment to the telephone network is shown in the following table.

Table 1. Means of Connection

Manufacturer’s
Port Identifier FIC Code

Off/On Premises Station OL13C 9.0F RJ2GX, RJ21X,

DID trunk 02RV2-T 0.0B RJ2GX, RJ21X
CO trunk 02GS2 0.3A RJ21X
CO trunk 02LS2 3.0A RJ21X
Tie trunk TL31M 9.0F RJ2GX

1.544 digital Interface 04DU9-B,C 6.0F RJ48C, RJ48M

1.544 digital Interface 04DU9-BN,KN 6.0F RJ48C, RJ48M

2.048 digital Interface 04DU9-BN,KN 6.0F RJ48C, RJ48M
120A2 channel service unit 04DU9-DN 6.0F RJ48C

If the terminal equipment (DEFINITY® System) causes harm to the telephone network, the
telephone compan y will noti fy y ou in adv an ce tha t tempor ary discontin uanc e of service ma y
be required. But if advance notice is not practical, the telephone company will notify the
customer as soon as possible. Also, you will be advised of your right to file a complaint with
the FCC if you believe it is necessary.

SOC/REN/A.
S. Code Network Jacks

RJ11C

The telephone company may make changes in its facilities, equipment, operations or
procedures that could affect the operation of the equipment. If this happens, the telephone
company will provide advance notice in order for you to make necessary modifications to
maintain uninterrupted service.

If trouble is experienced with this equipment, for repair or warranty information, please
contact the Technical Service Center at 1-800-242-2121 . If the equip ment is causing ha rm to
the telephone network, the telephone company may request that you disconnect the
equipment until the problem is resolved.

It is recommended that repairs be performed by Lucent Technologies certified technicians.
The equipment cannot be used on public coin phone service provided by the telephone

company. Connection to party line service is subject to state tariffs. Contact the state public
utility commission, public service commission or corporation commission for information.

This equipment, if it uses a telephone receiver, is hearing aid compatible.

Canadian Department of Communications (DOC)
Interference Information

This digital apparatu s does not e x ceed the Clas s A limits for ra dio nois e emiss ions se t out in
the radio interference regulations of the Canadian Department of Communications.

Le Présent Appareil Nomérique n’émet pas de br uits radioélectriques dépassant les limites
applicables aux appareils numériques de la class A préscrites dans le reglement sur le
brouillage radioélectrique édicté par le ministére des Communications du Canada.

European Union Declaration of Conformity

®

The “CE” mark affix e d to the DEFINITY

equipment described in this book indicat es that the

equipment conforms to the following European Union (EU) Directives:

■ Electromagnetic Compatibility (89/336/EEC)

■ Low Voltage (73/23/EEC)

■ Te lecommunicatio ns Terminal Equipment (TTE) i-CTR3 BRI and i-CTR4 PRI

For more information on standards compliance, contact your local distributor.

Table 1. ETS standards referenced by iCTR3 and CTR4

iCTR3 iCTR4 CTR3 CTR4

L1: ETS300012 ETS300011 ETS300012 ETS300011
L2: ETS300153 ETS300156 ETS300125 ETS300125
L3: ETS300104 ETS300104 ETS300102 ETS300102
Safety: ETS300047 ETS300046 ETS300047 ETS300046

How to get help

If you need additional help, the following services are available. You may need to purchase
an extended service agreement to use some of these services. Contact your Lucent
representative for more information.

DEFINITY Helpline [phone]
(for help with feature administration and system applications)

Lucent T echn ologies National Cust omer Care Center Support Line [phone]
(for help with maintenance and repair)

Lucent Technologies Toll Fraud Intervention [phone]
Lucent Technologies Corporate Security [phone]
Lucent Centers of Excellenc e

--Asia/Pacific [phone]

--Western Europe/Middle East/South Africa [phone]

--Central/Eastern Europe [phone]

--Central/Latin America/Caribbean [phone]

--Australia 61-2-9352-9090

--North America [phone]

How to order more copies

Call: Lucent Technologies Publications Center
US Voice [phone]
US FAX [phone]
Canada Voice [phone]
Europe, Middle East, Africa [phone]
Asia, China, Pacific Region, Caribbean,
Latin America Voice [phone]
Non-US Fax [phone]
Write: Lucent Technologies Publications Center
2855 N. Franklin Road, Indianapolis, IN 46219
USA
Order: Document No. 555-233-002

Issue 1, April 2000

DEFINITY Enterprise Communications Server Release 8.2
Overview

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Contents

vi

Contents

Contents vi

About This Book xvii

■ What Is the Purpose of This Book? xvii

■ Who Should Read This Book? xvii

■ What Is in This Book? xvii

■ Conventions Used in This Book xviii

■ Trademarks and Servic e Mark s xviii

■ How Can I Order Other Books? xix

■ How Can I Make Comments About This Book? xx

1 — System Overview 1

■ Hardware 2

Processor Port Network (PPN) 2
Expansion Port Network (EPN) 2
Center Stage Switch (CSS) 2
Carriers and Cabinets 3

■ Reliability and Recoverability 8

Configuring for Reliability/Recoverability 8
Survivable Remote EPN (SREPN) 8

■ DEFINITY ECS Network Connections 9

Public Telephone Network 9
Private Telephone Networks 9

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TCP/IP Networks 10
ATM Networks 10
Typical Connections 11

■ International Capabil ities 13

Public Network Call Priority 13
World Class Tone Detection 13
World Class Tone Generation 13
Administrable Loss Plan 13

■ Power 14

■ Software 14

2 — Telephone Features 15

■ Telephones 15

Telephones for the Global Marketplace 15

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IP SoftPhones 16
Wireless Handsets for X-Station Mobility 17

■ Teleconferencing Products 17

Quorum A-28 Conference Bridge 17
SoundStation Audioconferencing Systems 17

■ Telephone Features 19

Handling Incoming Call s 19
Call Redirection 22
Speed/Convenience Calling 29
Telephone Displays 32
Group Communication 33
Special Ringing 35

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Messaging 36
Telecommuting 38

3 — Attendant (Operator) Features 41

■ Attendant (Operator) 41

Attendant Console 41

■ DEFINITY PC Console 41

■ Attendant Features 42

Call Handling 42
Making Calls 44
Accessing the Attendant 45
Monitoring Calls 45
Centralized Attendant Service 47
Attendant with DCS 47

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4 — Computer-Related Calling Features 49

■ Data Modules 49

■ Modem Pooling 49

■ Alphanumeric Dialing 51

■ Data Call Setup 51

■ Data Hot Line 51

■ Default Dialing 51

■ Data Privacy 51

■ Data Restriction 52

■ Administered Connections 52

■ Multimedia Calling 52

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Multimedia Call Early Answer on
Vectors and Stations 52

Multimedia Call Handling 53
Multimedia Call Redirection to MM Endpoint 55
Multimedia Data Conferencing (T.120) via ESM 55
Multimedia Hold, Conference, Transfer, and Drop 55
Multimedia Multiple-Port Network 55
Multiple Call Appearances 55

■ Multimedia Applications Server Interface 56

■ Local Area Network Connectivity (LAN) 56

■ IP Solutions 56

Trunks 57
IP SoftPhones 58

■ Integrated Workstation Applications 59

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PassageWay 59
CallVisor ASAI 59

5 — Hospitality Features 61

■ Overview 61

■ Automatic Wakeup 61

■ Do Not Disturb 61

■ Dual Wakeup 61

■ Room Activated Wakeup With Tones 61

■ Hospitality Services 62

■ Names Registration 62

■ Suite Check-In via the Hunt-to Feature 62

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■ Property Management System Interface 62

■ Property Management System (PMS)

Digit to Insert/Delete 63

■ Single-Digit Dialing and Mixed

Station Numbering 63

■ Auto-Selection of DID Numbers 63

■ Station Hunt Before Coverage 63

6 — System Management Features 65

■ Scheduling 65

■ Concurrent User Sessions 65

■ Security 65

Call Restrictions 65
Class of Restriction (C OR ) 66
Security Violation Notification (SVN) 66

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Station Security Codes 66
Calling/Connected Party Number (CPN)

Restricti on 67

Restriction — Controlled 67
Malicious Call Trace 67
CAMA - E911 Trunk Group 68
Authorization Codes 68
Block Collect Call 68
Power Failure Transfer 68

■ DEFINITY Network Administration (DNA) 68

■ DEFINITY Site Administration (DSA) 69

■ Troubleshooting 69

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Automatic Circuit Assurance 69
DCS Automatic Circuit Assurance 70
Busy Verification of Terminals and Trunks 70
Facility Busy Ind ication 70
Facility Test Calls 70
Packet Error History 70
Variable Length Ping 71

■ Information and Reports 71

Recent Change History 71
Service Observing 71
Calling Party/Billing Number (CPN/BN) 71
Call Charge Information 72
Bulletin Board 72
Call Detail Recording (CDR) 73

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Traffic Reports 73

■ Announcements 74

Recorded Announcement 74
Music-on-Hold Access 74
Multimedia Queuing with Voice Announcement 74

■ Class of Service (COS) 74

■ Administration Without Hardware 75

Terminal Translation Initialization (TTI) 75

■ Tenant Partitioning 75

■ Trunk Management 75

Trunk Group Circuits 76
Local Exchange Trunks 76

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Tie Trunks 76
Auxiliary Trunks 77
IP Trunks 77
ISDN Trunks 78
ATM Trunks 81
Personal Central Office Line (PCOL) 81
Tandem 82
Digital Multiplexed Interface 83
Miscellaneous Trunks 83
Digital Interfaces 83
Answer Detection 84
Automatic Transmission Measurement System 85

■ Automatic Routing Features 85

Automatic Alternate Routing (AAR) 85

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Automatic Route Selection (ARS) 85
AAR/ARS Overlap Sending 86
AAR/ARS Partitioning 86
Time of Day Routing 86
Facility Restriction Levels

and Traveling Class Marks 87
Generalized Route Selection 87
Look-Ahead Routing 87
Subnet Trunking 88

■ Alarm Assignments 88

Alternate Operations Support System Alarm
Number 88

External Device Alarming 88

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Customer-Provided Eq uip men t Alar m 89

7 — Call Center Features 91

■ Automatic Call Distribution (ACD) 93

Agent Call Handling 95
Intraflow and Interflow 96
Abandoned Call Search 97
Call Vectoring 97
Dialed Number Identification Service (DNIS) 100
User-to-User Information Over the Public Network 100
Basic Call Management System (BCMS) 100
CentreVu Call Management System

(CentreVu CMS) 101
CentreVu Advocate 102

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Voice Response Integration (VRI) 103

■ Call Charge Information 103

■ ASAI (Adjunct Switch Application Interface) 104

CallVisor Adjunct Switch Application
Interface (ASAI) 104

■ CTI (Computer Telephony Integration) 105

CentreVu Computer Telephony on MAPD-NT 105
CentreVu IP Agent 105

■ ATM 106

ATM Trunking 106
ATM WAN PNC 106

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8 — Private Networking Features 107

■ Private Network Access 107

■ Node Number Routing 107

■ ATM-Port Network Connectivity (ATM-PNC) 107

■ ATM-Circuit Emulation Service (ATM-CES) 108

■ ATM Wide Area Network PNC (ATM WAN-PNC) 108

■ Distributed Communications System (DCS) 108

■ Uniform Dial Plan (UDP) 109

Attendant Features That Work Over the Network 110
Phone Features That Work Over the Network 110
System Management Features That Work

Over the Network 110
DCS Over ISDN-PRI D-channel 111

■ QSIG 111

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Call Completion 111
Call Independent Signaling Connections (CISC) 111
Manufacturer-Specific Information (MSI) 112
Path Replacement 112
Call Forwarding (Diversion) 112
Call Transfer 113
Name and Number Identification 113
Called NAME ID 113
Call Offer 113
QSIG Centralized Attend ant Se rv ice (CA S) 114
QSIG VALU 114
QSIG Voice Mail Capabilities 115

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9 — Adjunct Systems 117

■ Voice Messaging and Respon se 117

DEFINITY AUDIX 117
INTUITY AUDIX 119
INTUITY Lodging 120
INTUITY Conversant 120
INTUITY Call Accounting System 121
Centralized Voice Mail via Mode Code Integration 121
Other Supported Systems 121

■ Call Center (See Call Center Features) 122

PassageWay 122

■ Wireless 124

Forum Personal Communications Manager 124

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Index 125

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DEFINITY Enterprise Communications Server Release 8.2
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About This Book

What Is the Purpose of This Book?

555-233-002

About This Book

What Is the Purpose of This Book?

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This book provides general information about the components and capabilities of the
DEFINITY
system). It also discusses practical and creative applications for the DEFINITY ECS
platform.

This document covers information related to DEFINITY ECS R8.2. For details about
changes for Release R8.2, refer to

Release R8.2 Change Description, 555-233-411, Issue 1

®

Enterprise Communications Server (referred to as DEFINITY ECS or the

DEFINITY Enterprise Communicati ons Server

.

Who Should Read This Book?

This book is written for those who are considering the purchase of a DEFINITY ECS
system and for Lucen t Technologies represen tativ e s and di strib utors w ho nee d high- le v el
information about the system and how it can be used.

What Is in This Book?

This book discusses all DEFINITY capabilities available world-wide. It defines common,
practical solutions and suggests unusual, creative ones.

NOTE:

Some products are unavailable in some countries. Please check with your local
distributor for f urther information a bo ut w h ic h f eatures and solution s are available
to you.

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About This Book

Conventions Used in This Book

Conventions Used in This Book

The following conventions are used in this book:

■ The word “system

”

is a general t erm for the DEFIN ITY Ent erprise Commun icatio ns

Server.

■ The information in this book refers to DEFINITY ECS R8 unless otherwise

specified.

Trademarks and Service Marks

This book contains references to the following Lucent Technologies trademarked
products:

■ AUDIX

■ Callmaster

■ CallVisor

■ CenterVu™

■ CONVERSANT

■ DEFINITY

■ INTUITY™

■ INTUITY Lodging™

■ MULTIQUEST

■ OneVision™

■ Quorum™

■ VOICE POWER

The following are trademarks or registered trademarks of other companies:

■ MicroSoft

■ Windows™ is a trademark of the Microsoft Corporation

■ Vari-A-Bill

®

®

®

®

®

®

®

®

is a registered trademark of Microsoft Corporation

TM

is a trademark of AT&T

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About This Book

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How Can I Order Other Books?

How Can I Order Other Books?

Call: Lucent Technologies Publications Center
US Voice [phone]
US Fax [phone]

Canada Voice [phone]
Europe, Middle East, Africa Voice [phone]
Asia, China, Pacific Region,
Caribbean, Latin America Voice [phone]
Non-US Fax [phone]

Write: Lucent Technologies Publications Center
2855 N. Franklin Road, Indianapolis, IN 46219 USA

Issue 1

April 2000

xix

Order: Document No. 555-233-002
Comcode 108595968, Issue 1, April 2000

We can place you on a standing order list so that you will automatically receive
updated versions of this book. For more information on standing orders, or to
be put on a list to receive further issues of this book, please contact the
Lucent Technologies Publications Center.

Other locations: contact your Lucent representative.

DEFINITY Enterprise Communications Server Release 8.2
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About This Book

How Can I Make Comments About This Book?

555-233-002

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How Can I Make Comments About
This Book?

Lucent Technologies welco mes y ou r feedb ac k. Pl ease fill out th e r eader comment c ard at
the back of this book and return it. Your comments are of great value and help improve
our documentation.

If the reader comment card is miss ing, fax y ou r comm ents to 303-538 -1741, a nd men tion

this document’s name and number,

Overview,

555-233-002, Issue 1

DEFINITY Enterprise Communication Server

.

xx

DEFINITY Enterprise Communications Server Release 8.2
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System Overview

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1 —System Overview

DEFINITY Enterprise Communications Server (ECS) organizes and routes voice, data,
image and video transmissions. It can connect to private and public telephone networks,
Ethernet LANs, ATM networks, and the Internet.

1

Voice

1

Data

2

Figure 1. DEFINITY Enterprise Communications Server

3
4

Image
Multimedia

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Hardware

Though the primary components are the same, your DEFINITY ECS can vary widely in
size and appearance, depending on your capacity requirements. It may be as small as a
single wall-mounted cabinet, or it may be as large as several tall cabinets linked together
in the same room or even hundreds of kilometers apart. Regardless of configuration,

however, the system’s footprint is relatively small.
The DEFINITY system is essentially an arrangement of port networks and circuits that

connect incoming to outgoing communications ports. Up to three port networks can be
connected directly to each other. When there are more than three port networks, the
connections are made through a Center Stage Switch.

Processor Port Network (PPN)

Every DEFINITY ECS has one Processor Port Network (PPN). It is often the only
component in small systems. The PPN houses the Switch Processing Element.

The Switch Processing Element (SPE) contains the central processing unit, which
supervises system operation. It also contains a mass storage system for loading system
software and saving system translations.

Because your applic ati on requi rem en ts m ay vary widely, DEFINITY ECS has three types
of SPEs av ail able with proven capacities o f 70 ,000 calls per hour, 140,000 calls per hour,
and 250,000 calls per hour. The performance you realize will depend on the call
processing, administrative, and maintenance activities in which your system is engaged.

2

Expansion Port Network (EPN)

Expansion Port Networks (EPNs) are used when the system grows beyond the capacity
of a single port network or must serve geographically dispersed offices. EPNs provide
additional ports as needed. A system can have up to 43 Expansion Port Networks.

Center Stage Switch (CSS)

The Center Stage Switch (CSS) is a connection hub that provides port network
communication. It is an essential component of a DEFINITY ECS configuration if the
system is composed of more than three port networks. Often it is incorporated into
smaller configurations to allow for growth. The CSS consists of from one to three switch
nodes. Switch nodes are composed of one or two switch node carriers, depending on

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System Overview

Hardware

whether the system i s being du plica ted for enh anced reliab ility. Each carrier can reside in
the PPN cabinet or an EPN cabinet. One switch node can accommodate up to 15
Expansion Port Networks.

Fiber Link Administration

Port cabinets are connected via direct fiber links or through fiber links to a Center Stage
Switch to provide the connections required for voice and data information transfer. The
CSS is composed of switch node carriers that are interconnected by fiber links. It
provides both circuit-switched and packet-switched connections. Fiber Link
Administration create s the t ra nslati on dat a defin ing the se li nks b y identi fying the end point
pairs for each link. Endpoints can be an expansion interface or a switch-node-interface
circuit pack.

Carriers and Cabinets

Carriers are enclosed shelves composed of vertical slots that hold circuit packs. Circuit
packs make up the logic, memory, and switching circuitry for the system. Port circuit
packs connect to telephones, computers, and communications lines. The carriers are
designed to accept any type of port circuit pack in each circuit pack position.

Each cabinet contains at least one carrier. The circuit packs fit into connectors attached
to the rear of the slots. Every connector is connecte d to s ign al b u ses an d power supplies
in the cabinet.

The cabinets also house equipment that supplies power backup, ringing signal voltage,
and mass storage for software translations.

There are three types of cabinets

■ Compact Mod ular Cabinet. (CMC)

■ Single-Carrier Cabinet. (SCC)

■ Multi-Carrier Cabinet (MCC))

3

Compact Modular Cabinets

The Compact Modular Ca binet (CMC) is a s mall, wa ll- or floo r-mounted un it that supp orts
a single port network. It is thus well-suited to small, growing organizations. For a modest
initial investment, the CMC gives you the capacity that you need now. As your
organization grows, you can connect up to two more modular cabinets to expand the
existing port network. Each CMC can hold up to 10 circuit packs. Figure 2 shows a
Compact Modular Cabinet.

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Figure 2. Compact Modular Cabinet

Single-Carrier Cabinets

The Single-Carrier Cabinet (SCC) is a compact, floor-mounted modular unit for
businesses that wi ll at so me po int req uire m ore c apaci ty tha n Co mpac t Mod ular C abine ts
can supply. The SCC can support additional, expansion port networks, so you can add
capacity as needed, up to the limit set by the overall DEFINITY system architecture. Each
SCC contains a single circuit pack carrier with up to 20 circuit packs, depending on the
carrier type. Up to four SCCs can be st ack ed to form a single port network, and ad ditional
port networks can be connected for still more capacity. Figure 3 shows a typical
single-carrier cabinet.

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Figure 3. Typical Single-Carrier Cabinet and cabinet stack

Multi-Carrier Cabinets

The Multi-Carrier Cabinet (MCC) is a large unit designed for high-capacity
communication s sy s tem s an d large businesse s . I t ca n co nta in up to five carriers and c an
be connected to additional, expansion port networks. Figure 4 shows a typical
multi-carrier cabinet.

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Figure 4. Typical Multi-Carrier Cabinet

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Basic System

1

Directly Connected System

2

Directly Connected System with Two EPNs

3

CSS-Connected System with up to 15 EPNs

4

CSS-Connected System with up to 43 EPNs

5

Figure 5. Standard Configurations

Processor Port Network

A

Expansion Port Network

B

Center Stage Switch

C

Switch Node

D

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Reliability and Recoverability

Reliability and Recoverability

The system is designed to recover from a power outage or other failure instantly,
regardless of the source of the failure. Each port network includes a set of segmented,
parallel buses. If one of the paired segments fails, the other bus segment continues to

handle communications. You can always further enhance the system’s reliability by
duplicating critical components such as processors or fiber-optic links between port
networks.

Configuring for Reliability /Recoverabili ty

DEFINITY ECS can be configured to meet the disaster recovery needs of any business.
For example:

■ Calls can be routed throu gh an a lte rnate DEFINI T Y EC S if o ne s ite is des troyed or

disabled by natural or man-made disaster.

■ Multimedia (voice, video, data) connections to the network can all be made

redundant, in case of network failures. The system can be routed through multiple
public exchanges to protect against network failures (a cable or fiber being cut, for
example).

■ DEFINITY's universal hardware and flexible software allow systems to be re

configured quickly in emergency situations. Por t networks can be added and
network routing can be changed in a matter of minutes.

■ The TN2211 Optical Drive will replace the present TN1656 Tape Drive. The new

Optical Drive will pro vide the sa me fun ct ionali ty as the Tape drive , s uch a s, stor age
for software upgrades, translation backups, announcement file backups, core
dumps, etc. It is also fas ter th an the Tape Drive. A ful l ba ckup to the Optical Driv e
will take appro xim ately 20 min utes . The present Tape Drive bac kup tak es about 95
minutes.

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Survivable Remote EPN (SREPN)

The Survivable Remote Expan si on Port Network (SREPN) allows a DE FINITY ECS (R 6r
or later) EPN to provide service to th e c ust om er w hen the l ink to th e ma in proc es sor fa il s
or is severed or when the processor or CSS fails. When the links to the DEFINITY ECS

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DEFINITY ECS Network Connections

are restored and stable, the logi c switch is manually reset and the EPN is reconne cte d to
the links from the switch. There are both command and man ual r ese ts . Th e rese ts ca n be
done remote ly at the SAT or manually at the equipment.

The SREPN must be administered separately (not as a duplicated PPN) to function in a
disaster recovery scenario. It will not function as a survivable remote EPN without the
administration (stations, trunks, features) to support its operation.

DEFINITY ECS Network Connections

The system can be connected to public and private networks in a variety of ways.

Public Telephone Network

DEFINITY ECS supports a full range of digital and analog connections to a Public
Telephone-Network Central Office, including ISDN-PRI and ISDN-BRI.

Private Telephone Networks

DEFINITY ECS supports the many kinds of private-network connections, including:

■ Digital telephone handsets

■ Data-communications equipment, including data modules and data terminal

equipment.

■ Attendant and voice messaging systems

■ Multimedia and video conferencing equipment

■ Call Center systems

■ Hospitality systems

■ Auxiliary loudspeaker-paging and music-on-hold equipment

■ Peripherals, such as journal printers and call detail-recording equipment.

■ Asynchronous Transfer Mode or ATM

■ IP solutions, such as IP trunking and IP softphones

■ Other private-network switches

9

DEFINITY Enterprise Communications Server Release 8.2
Overview

555-233-002

System Overview

DEFINITY ECS Network Connections

TCP/IP Networks

DEFINITY ECS can also connect to Ethernet Local Area Networks (LANs) and the
Internet.

■ The optional DEFINIT Y LAN G ate w a y fe ature le ts the D EFINI TY syst em e x chang e

messages with LAN communications software.

■ DEFINITY ECS now supports Internet Protocol (IP) trunks using the TN802B

circuit pack and C-LAN card (TN79 9B). How ever, to connect to the netw ork and do
signaling over IP, only the TN799B is required.

IP trunking is a good choice for basic, corporate voice and fax communications,
where cost is a major concern. IP-trunk calls travel over a company’s intranet

rather than the Public Telephone Network. So, for the most common types of
internal, corporate communications, IP trunks offer considerable savings.

IP trunking is usually not a good choice for applications where calls have to be
routed to multiple destinations (as in most conferencing applications) or to a voice
messaging system. IP-trunk calls are compressed to save network bandwidth.
Repeated compression and decompression results in a loss of data at each stage
and degrades the final quality of the signal. This is not a problem in normal,
corporate voice or fax calls. They go through two or three compression cycles at
most. But multipoint conference calls and most voice messaging systems add too
many compression cycles for acceptable quality.

■ DEFINITY ECS now includes the IP Solutions feature, which supports audio and

voice transmissions over a LAN or WAN. For more information about IP Solutions,
see ‘‘IP Solutions’’ on page 56.

Issue 1

April 2000

10

ATM Networks

Three kinds of Asynchronous Transfer Mode (ATM) connectivity are available with
DEFINITY ECS. Any standards-compliant ATM switch can serve as the switch node
connecting DEFINITY ECS port networks. In this type of configuration, the ATM switch
replaces the Center-Stage Switch.

The three kinds of ATM connectivity DEFINITY ECS supports are as follows:

■ ATM Port Network Connectivity (ATM-PNC) provides an alternative to either the

direct-connect or C ente r Stag e Sw i tch co nfi gurations for connecting the Processor
Port Network (PPN) to one or more Expansion Port Networks (EPNs). ATM-PNC
provides reduced infrastructure cost and improved network manageability.