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 
2-5 How the system communicates worldwide 
2
nAdministrable Transmission allows you to select the transmission 
requirements that conform to local requirements.
nAdministrable Timers support varied international trunk interface 
requirements, allowing you to change the timing according to local 
standards.
nAdministrable Repetitive Call Waiting allows administration of the repetitive 
call waiting tone interval from 4 to 40 seconds in 1-second intervals.
nAttendant Serial Calling enables the attendant to transfer trunk calls 
returned to the attendant position once the called party has hung up, 
allowing the attendant to transfer the call to another party.
nEnhanced Attendant Queue, Display, and Misoperation allows attendants 
to see the exact number of calls and types in queue, and to prioritize calls 
via their different call types for countries that require it. In addition, in 
countries that require this, an attendant placing a call on hold and going on 
hook is considered a misoperation, and the attendant is alerted.
nDisconnect Supervision management avoids having system resources 
used indefinitely when far-end central office disconnect supervision is not 
provided. Resources used on the call are removed and made available for 
servicing new calls. 
nWhen an internal user is the last person remaining off-hook on a call, that 
person’s telephone will receive busy tone for 30 seconds or until the user 
hangs up the phone. This feature is called Busy Tone Forward Disconnect 
and can be enabled or disabled on a system-wide basis.
nInternational Toll/Code Restriction allows you to restrict calls using any 
international numbering plan.
nCall Detail Recording enhancements for periodic pulse metering provides 
periodic pulse metering pulse counts in the Call Detail Recording output 
record. The pulses transmitted over trunk lines from the serving central 
office are used to determine call charges.
nT1/E1 access and conversion allows simultaneous connection to both 
T1 (1.544 Mbps) and E1 (2.048 Mbps) facilities.
Most of these capabilities are described in greater detail throughout this docu-
ment. See Appendix A, ‘‘Features,’’
 for a listing of features available on the sys-
tem. Appendix B
 lists the DEFINITY ECS features not supported by DEFINITY 
BCS and GuestWorks. For a complete description of the features used with the 
system, see the 
DEFINITY® ECS Administrator’s Guide. 
						

							DEFINITY® Business Communications System and GuestWorks® Issue 6 
Overview  555-231-208  Issue 1
April 2000
Introduction 
2-6 Software 
2
Software 
All DEFINITY systems (and related Lucent Technologies systems) use similar 
software. For example, DEFINITY BCS and GuestWorks Issue 6 uses the same 
base software as DEFINITY ECS R8. To provide this commonality while still 
accommodating wide variations in configurations and options, the system 
dynamically allocates internal memory storage. Memory is sized when the system 
is initialized, selecting the proper software parameters based on the hardware 
configuration.
Hardware
Though the primary components are the same, your system can vary widely in 
size and appearance, depending on your capacity requirements. The system 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 system’s main hardware components are port networks. Up to three port net-
works 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
Every system has one Processor Port Network; it is often the only component in 
small systems. The Processor Port Network houses the Switch Processing 
Element (SPE).
The 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 application requirements may vary widely, the system has three 
types of SPEs available with proven capacities up to 100000 busy-hour calls. The 
performance you realize will depend on the call processing, administrative, and 
maintenance activities in which your system is engaged. See the 
DEFINITY® ECS 
System Description
 for more details.
Expansion Port Network
Expansion Port Networks are used when the system grows beyond the capacity 
of a single port network or must serve geographically-dispersed offices. They 
provide additional ports as needed. Depending on the model, a system can have 
up to 43 Expansion Port Networks. 
						

							DEFINITY® Business Communications System and GuestWorks® Issue 6 
Overview  555-231-208  Issue 1
April 2000
Introduction 
2-7 Hardware 
2
Center-Stage Switch
The Center-Stage Switch (available only on an “r” system) is a connection hub 
that provides port network communication. It is an essential component of a 
system configuration if the system is composed of more than three port networks. 
Often it is incorporated in smaller configurations to allow for growth. The 
Center-Stage Switch consists of one to three switch nodes. Switch nodes are 
composed of one switch node carrier for both standard and high reliability. Each 
carrier can reside in the Processor Port Network cabinet or in an Expansion Port 
Network 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 Cen-
ter-Stage Switch to provide the connections required for voice and data informa-
tion transfer. The Center-Stage Switch is composed of switch node carriers that 
are interconnected by fiber links. It provides both circuit-switched and 
packet-switched connections. Fiber Link Administration creates the translation 
data defining these links by identifying the end point pairs for each link. End points 
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 connected to signal buses and 
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:
nCompact Modular Cabinet (CMC). This cabinet functions like the compact 
single
-carrier cabinet, but up to three of the cabinets can be connected 
together. The CMC can be mounted on the wall and is intended for smaller 
configurations.
nSingle-Carrier Cabinet. These cabinets are modular, can be connected to 
Expansion Port Networks, and can be stacked up to four high. They are 
often used by small businesses that are growing or that expect to grow. 
nMulticarrier Cabinet. A tall cabinet that contains up to five carriers and can 
be connected to Expansion Port Networks. Multicarrier cabinets are used 
by businesses that require larger configurations. 
						

							DEFINITY® Business Communications System and GuestWorks® Issue 6 
Overview  555-231-208  Issue 1
April 2000
Introduction 
2-8 Hardware 
2
Compact Modular Cabinets
Figure 2-2 shows a Compact Modular Cabinet.
 
Figure 2-2. Compact Modular Cabinet (CMC)
The Compact Modular Cabinet has the following characteristics:
nUp to three cabinets can be connected together.
nIt allows small organizations to expand while keeping the initial investment 
moderate.
nIt can be mounted on a wall.
nThe first two universal port slots in the first cabinet (cabinet 1) are 
dedicated to the processor complex; therefore, there are eight slots 
available in the first cabinet for general use.
nThe other two cabinets have 10 universal port slots per cabinet.
The CMC is used as a Processor Port Network only. It does not support duplica-
tion, and it requires AC power. 
						

							DEFINITY® Business Communications System and GuestWorks® Issue 6 
Overview  555-231-208  Issue 1
April 2000
Introduction 
2-9 Hardware 
2
Single-Carrier Cabinets
Figure 2-3 shows a typical Single-Carrier Cabinet.
 
Figure 2-3. Typical Single-Carrier Cabinet (SCC)
A maximum of four single-carrier cabinets can be stacked on top of each other to 
form a single Processor Port Network or Expansion Port Network. There are four 
types of single-carrier cabinets:
nControl cabinet (located in the Processor Port Network only), which 
contains ports and a control complex (for call processing). Each control 
cabinet contains 16 universal slots.
nPort cabinet (located in the Processor Port Network and in Expansion Port 
Networks), which contains ports. Each port cabinet contains 18 universal 
slots.
nDuplicated control cabinet (PPN only), contains duplicate SPE circuit packs 
to perform call processing, maintenance, and administration identical to the 
control carrier. The duplicated control carrier also contains 16 port circuit 
pack slots. Only G3si and G3r support duplication.
nExpansion control cabinet (optional and located only in an Expansion Port 
Network), which contains ports, a tone-clock, an interface to a Processor 
Port Network cabinet, and a maintenance interface. Each expansion 
control cabinet contains 17 universal slots. 
						

							DEFINITY® Business Communications System and GuestWorks® Issue 6 
Overview  555-231-208  Issue 1
April 2000
Introduction 
2-10 Hardware 
2
Figure 2-4 shows a typical cabinet stack. 
 
Figure 2-4. Typical Cabinet Stack (four cabinets maximum) 
						

							DEFINITY® Business Communications System and GuestWorks® Issue 6 
Overview  555-231-208  Issue 1
April 2000
Introduction 
2-11 Hardware 
2
Multicarrier Cabinets
Figure 2-5 shows a typical Multicarrier Cabinet. The power arrangement shown at 
the bottom of the figure will be different depending upon the country where the 
cabinet is installed.
 
Figure 2-5. Typical Multicarrier Cabinet (MCC)
There are two types of multicarrier cabinets:
n The Processor Port Network cabinet, which contains the following:
— The processor that performs call processing
—Ports
— An interface to an Expansion Port Network cabinet (optional)
— A Center-Stage Switch (optional; for G3r only). 
						

							DEFINITY® Business Communications System and GuestWorks® Issue 6 
Overview  555-231-208  Issue 1
April 2000
Introduction 
2-12 Hardware 
2
n The Expansion Port Network cabinet, which contains the following:
— Additional ports
— Interfaces to the Processor Port Network cabinet and other 
Expansion Port Network cabinets
— Maintenance interface
— Components of a Center Stage Switch (optional; for G3r only).
Control, duplicated control, expansion control, port, and switch node carriers can 
be installed in multicarrier Processor Port Network and Expansion Port Network 
cabinets. The slots for the carriers differ based on the type of system as follows:
nControl Carrier and Duplicated Control Carrier for G3si have nine universal 
slots.
nControl Carrier and Duplicated Control Carrier for G3r have no universal 
slots.
nExpansion Control Carrier has 19 universal slots.
nPort Carrier has 20 universal slots. 
For more detailed hardware information, see the 
DEFINITY® ECS System 
Description
.
Standard configurations
The system hardware can be configured in a variety of ways, depending on the 
number of end points the switch serves and the number of circuit packs required 
to connect the end points. Figure 2-6
 shows the five main system configurations. 
						

							DEFINITY® Business Communications System and GuestWorks® Issue 6 
Overview  555-231-208  Issue 1
April 2000
Introduction 
2-13 Hardware 
2
Figure 2-6. Standard Configurations1) Basic System A) Processor Port Network
2) Directly Connected System B) Expansion Port Network
3) Directly Connected System 
with Two EPNsC) Center-Stage Switch
4) CSS-Connected System 
with up to 15 EPNsD) Switch Node
5) CSS-Connected System 
with up to 43 EPNs 
						

							DEFINITY® Business Communications System and GuestWorks® Issue 6 
Overview  555-231-208  Issue 1
April 2000
Introduction 
2-14 Hardware 
2
The main configurations are as follows:
1. Basic system consisting of a Processor Port Network (PPN) only
2. Directly-connected system consisting of two Port Networks (PNs): one 
PPN and one Expansion Port Network (EPN) connected directly together
3. Directly-connected system consisting of three PNs (one PPN and two 
EPNs) connected directly together
4. Center-Stage Switch connected system consisting of up to 15 EPNs 
interconnected by one Switch Node (SN) to the PPN
5. Center-Stage Switch connected system consisting of up to 21 EPNs 
interconnected by two SNs to the PPN, and up to 43 EPNs interconnected 
by three SNs to the PPN.
Direct-Connect configurations
Direct-connect configurations have these distinguishing characteristics:
nEvery port network is connected to every other port network via an 
expansion interface circuit pack and a fiber-optic cable.
nEach fiber is connected to a fiber transceiver that can transmit great 
distances.
For G3r systems, a port network can be hundreds of kilometers away from the 
central site. These remote port networks are connected to the other port networks 
via a Digital Signal Level 1 (DS1 
— T1 or E1) link attached to a converter board, 
which in turn is connected to the expansion interface. The converter board con-
verts the fiber-optic signals between DS1 protocol and the internal expansion 
interface protocol so the signal can travel over dedicated public or private lines.
Center-Stage Switch configurations
Center-Stage Switch configurations have these distinguishing characteristics:
nAn expansion interface in every port network is connected to a switch-node 
interface in the Center-Stage Switch.
nDS1 Remote Expansion Port Networks require T1/E1 Converter pairs at 
the remote end and switch node T1/E1 Converter pairs at the switch node. 
In the pairs, the T1/E1 Converter board converts the fiber-optic signals 
between T1/E1 protocol and the internal expansion interface protocol so 
the signal can travel over dedicated public or private lines.
nSwitch-node interfaces and fiber-optic cables are also required for 
communications between switch-node carriers. The number of switch-node 
interfaces required depends on the call traffic between port networks 
whose switch-node interfaces reside in different carriers.