Lucent Technologies DEFINITY Business Communications System And GuestWorks Instructions Manual

							DEFINITY® Business Communications System and GuestWorks® Issue 6 
Overview  555-231-208  Issue 1
April 2000
Introduction 
2-15 Reliability and recoverability 
2
Reliability and recoverability
Much of the system’s reliability and recoverability can be attributed to the switch 
architecture and the power of the system software. The distributed processor 
architecture provides subsystem processors on each circuit pack. A standard 
maintenance routine is conducted automatically by the system, as are periodic 
backups of translations. 
Based on the needs of your organization, two redundancy configurations are 
available:
nStandard reliability
nHigh reliability.
Standard reliability
The built-in duplication of many of the system’s parts makes it inherently reliable. 
In addition to the dual bus, the system includes the following:
nOne control carrier
nOne tone-clock circuit pack per port network
nPort networks interconnected by single fiber cables (SCC and MCC 
hardware only).
High reliability
NOTE:
The high-reliability option (also known as duplicated systems) may not be 
available in your region. Please contact your local account manager or 
authorized Lucent Technologies representative for further information about 
reliability options.
High-reliability systems include the following:
nTwo control carriers (located in the Processor Port Network cabinet), which 
contain duplicate processor and tone-clock circuit packs (one is active and 
the other is in standby mode) (G3si and G3r only; not available on G3csi)
nOne tone-clock circuit pack per Expansion Port Network
nDuplicate connections between the Center-Stage Switch and the 
Processor Port Network (G3r only)
nExpansion port networks connected by single fiber cables
nDuplicate switch-node clock circuit packs (one is active and the other is in 
standby) in each switch-node carrier (G3r only). 
						

							DEFINITY® Business Communications System and GuestWorks® Issue 6 
Overview  555-231-208  Issue 1
April 2000
Introduction 
2-16 Reliability and recoverability 
2
Figure 2-7 shows an example of a high-reliability, directly-connected system.
Figure 2-7. High-Reliability, Directly-Connected System 1) Processor Port Network 3) Control Carrier
2) Expansion Port Network 4) Duplicate Control Carrier
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							DEFINITY® Business Communications System and GuestWorks® Issue 6 
Overview  555-231-208  Issue 1
April 2000
Introduction 
2-17 Reliability and recoverability 
2
Figure 2-8 shows an example of a high reliability center stage system, where the 
Center-Stage Switch is connected to both the active and standby control carriers.
Figure 2-8. High-Reliability, Center Stage System1) Processor Port Network 4) Control Carrier
2) Expansion Port Network 5) Duplicate Control Carrier
3) Center-Stage Switch 
						

							DEFINITY® Business Communications System and GuestWorks® Issue 6 
Overview  555-231-208  Issue 1
April 2000
Introduction 
2-18 Connections to the system 
2
Connections to the system
The system can be connected to communications paths that transmit voice and 
data signals between the system and a Central Office and/or other systems. The 
system can also be connected to public and private networks. Other possible 
connections are as follows:
nData Communications Equipment, such as a data module, which translates 
transmitted data to a form compatible with the communications channel
nData Terminal Equipment, such as a workstation, which generates or 
receives data
nOther peripherals for administering and maintaining the system and 
auxiliary equipment for features such as Loudspeaker Paging and 
Music-On-Hold. 
Figure 2-9
 shows typical system connections.
NOTE:
Actual equipment may look different than the equipment shown. 
						

							DEFINITY® Business Communications System and GuestWorks® Issue 6 
Overview  555-231-208  Issue 1
April 2000
Introduction 
2-19 Connections to the system 
2
Figure 2-9. System Connections1) Wireless System 8) Digital Facilities
2) Property Management System 9) Analog Facilities
3) Business Telephone 10) Data Terminals
4) Telephone with Data Module 11) Host Computer
5) Data Terminal 12) Data Terminal
6) Voice Messaging System 13) Management Terminal
7) Outside Private Line Data 
Transmission Equipment14) Attendant Console
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							DEFINITY® Business Communications System and GuestWorks® Issue 6 
Overview  555-231-208  Issue 1
April 2000
Introduction 
2-20 Connections to the system 
2
Adjunct connections
In addition to station connections, the system includes many connections for 
adjunct (subordinate, related) equipment. The system provides a TCP/IP link 
adjunct interface. This interface supports a variety of adjuncts, including the 
I
NTUITY AUDIX Messaging System.
The system provides two Electronic Industries Association (EIA) RS-232 ports: 
one for a PC using the DEFINITY Site Administration management tool, and one 
for a spare connection. In addition, a tip/ring connector with a built-in modem is 
provided for remote administration on the ESCC and MCC cabinets. The CMC 
cabinet requires a separate modem.
The spare RS-232 port can support one of the following:
nCall Detail Recording Utilities
nCall Detail Recording printer
nSystem printer
nProperty Management System (PMS)
nBasic Call Management System (BCMS) Terminal.
NOTE:
Normally the PMS and BCMS terminals will be connected into the switch via 
data modules and not connected through the spare RS-232 port.
The system uses an analog line circuit to support the following voice adjunct and 
interface functions:
nLoudspeaker paging
nMusic-on-hold
nQueue status indications
nRecorded announcement
nExternal alarm inputs.
The system supports an auxiliary trunk interface that connects to equipment sup-
porting the following features:
nRecorded announcement 
nMusic-on-hold
nLoudspeaker paging.
The system supports the following network interfaces:
nElectronic Tandem Network 
nIntegrated Services Digital Network-Primary Rate Interface (ISDN-PRI). 
						

							DEFINITY® Business Communications System and GuestWorks® Issue 6 
Overview  555-231-208  Issue 1
April 2000
Introduction 
2-21 Connections to the system 
2
Telephone connections
All signals between analog telephones and the system are in analog form over a 
pair of wires. Digital telephones (such as the 6400-series telephones) using the 
Digital Communications Protocol (DCP) employ digital transmission for integrated 
voice and data signals and control signals. Transmission is over a connection 
consisting of one or two pairs of wires. Each connection supports one signaling 
channel and two information (voice and data) channels.
Like the digital DCP telephones, ISDN telephones transmit voice, data, and con-
trol signals digitally. With the ISDN telephones however, the transmission employs 
the worldwide standard BRI protocol between the system and the telephone.
Network connections
Lucent Technologies is the first vendor to provide compatibility with the QSIG 
global networking protocol. This means you can connect the system with other 
switches throughout the world. QSIG Global Networking was developed to comply 
with the QSIG standards developed by the European Computer Manufacturer’s 
Association and the International Standardization Organization. It supports the 
ISDN-PRI connection from system to system as long as both systems support the 
same protocol.
The system supports both E1 and DS1 facilities. As industry standards around the 
world, E1 and DS1 provide the latest alternative to analog trunking. T1/E1 access 
and conversion allows simultaneous connection to both T1 (1.544 Mbps) 
and E1 (2.048 Mbps). 
The system’s support of ISDN-PRI, ISDN-Basic Rate Interface, and available pub-
lic network services means that you can achieve full end-to-end ISDN connectivity 
and take advantage of ISDN services and features. The system provides ISDN 
support for up to 84 (R8csi), 1000 (R8s), and 7000 (R8r) telephones. 
The system also supports connection to an Electronic Tandem Network. Different 
Electronic Tandem Network locations are connected via analog or digital tie 
trunks. For example, a Digital Signal Level 1 interface can act as a high-speed 
(1.544 Mbps) digital backbone for voice and data communications between Elec-
tronic Tandem Network locations.
For more information, see Chapter 9, ‘‘Networking Solutions.’’ 
						

							DEFINITY® Business Communications System and GuestWorks® Issue 6 
Overview  555-231-208  Issue 1
April 2000
Introduction 
2-22 Connections to the system 
2
Power
Depending upon the cabinet style, the system can accept a variety of AC or DC 
power depending on your region. The system can operate without requiring a 
power transformer in almost any part of the world.
During a power outage, battery backup differs depending on the cabinet style. 
See the 
DEFINITY ECS System Description for more information. 
						

							Industry Applications 
3-1 Overview 
3
DEFINITY® Business Communications System and GuestWorks® Issue 6 
Overview  555-231-208  Issue 1
April 2000
3
Industry Applications
Overview
The applications presented in this chapter explain how DEFINITY BCS and 
GuestWorks meets communications challenges in various industries. Though the 
specific requirements of the industries vary, the general information presented 
here can help to generate ideas. Even if none of the applications precisely match 
your situation, the examples may suggest creative solutions you can apply to suit 
your needs.
In the financial services industry, for example, banks, brokerage houses and 
insurance companies now offer many of the same services. In this chapter, 
industries are presented in the broadest terms, with little regard for overlap. For 
example, the insurance industry can be considered under both the Health Care
 
and Financial services
 headings.
In most cases it is difficult to consider the system without also considering its array 
of options. Many of the solutions discussed in this chapter are enabled by optional 
hardware and software. The system is the essential integrating platform that 
coordinates and enhances these specialized tools. Even if your intention is to 
purchase a basic system, it is important to gain some understanding of the many 
options the system provides so you can eventually capitalize on those 
advantages.
NOTE:
Some features and solutions are unavailable in some countries. Please 
contact your local account manager or authorized Lucent Technologies 
representative for further information about which features and solutions are 
available to you. 
						

							DEFINITY® Business Communications System and GuestWorks® Issue 6 
Overview  555-231-208  Issue 1
April 2000
Industry Applications 
3-2 Education (K – 12 and small colleges) 
3
Education (K – 12 and small colleges)
Municipal school districts and small colleges seek to:
nEnsure reliable telephone service
nCoordinate information and services
nCommunicate easily with the outside world
nReduce costs but still serve student needs
nPlan for expansion and innovation.
Ensure reliable telephone service 
The system can service up to 25000 telephones. The size and efficiency of the 
system allows small colleges to generate revenue from student phone service, 
which offsets the cost of other services.
The reliability of the system is without equal. The system’s automatic backup 
features, maintenance tests, and line-monitoring functions work proactively to 
protect your investment. These and related features identify potential difficulties 
well before the system’s operations might be compromised, further enhancing the 
high reliability inherent in the system architecture.
Coordinate information and services
Many colleges have large campuses or are composed of a network of scattered 
buildings and offices. Efficient connections among the many elements are 
essential to the integrity of the institution. A variety of options can help coordinate 
information and services from many locations:
nWireless and cordless telephones allow librarians, technicians, and clerks 
to easily search for things while talking to the person requesting the search.
nA single voice messaging system can be accessed by several sites using 
the Centralized Voice Mail via Mode Code Interface feature. This allows 
satellite campuses or offices to access common directories and handle 
messages as if they were all on the same campus.
nAudio conferencing equipment allows teachers and managers to easily 
participate in policy-making meetings, regardless of location.