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
Data Management Solutions 
8-5 Digital interfaces 
8
World class BRI supports the following country protocols:
nBellcore National ISDN-1 protocol in the United States (TR268)
nNational protocols in Australia (AUSTEL TS013, Telecom Australia 
TPH 1962), Japan (NTT BRI) and Singapore (FETEX 150 TIF 218)
nETSI NET 3 protocol (ETS 300 102) for use in most of Europe.
World class BRI supports multipoint (up to two devices per port) only for the 
Bellcore National ISDN-1 Country Protocol option.
Data modules
Data modules connect the system with other communications equipment, 
changing protocol, connections, and timing as necessary. The system supports 
the following data modules:
n8400B Plus DCP data module
n7400A DCP data module
n7500B ISDN-BRI data module.
All of these data modules support industry standards and include options for set-
ting the operating profile to match that of the data equipment. 
8400B Plus data module
The 8400B Plus data module is a two-wire version of the 7400B Plus data module 
(no longer offered). The 8400B Plus dual-function data module provides 
full-duplex, asynchronous connectivity for DCP applications. The 8400B Plus 
emulates the industry-standard Hayes modems and works with host-connection 
software packages that use the Hayes command set. The data module gives you 
a choice of transmission speeds ranging from 300 bps to 19.2 kbps.
7400A Data Module
The 7400A dual-function data module provides full-duplex, asynchronous 
connectivity for DCP applications. It emulates the industry-standard Hayes® 
modems and works with host-connection software packages that use the Hayes 
command set. The data module gives you a choice of transmission speeds 
ranging from 300 bps to 19.2 kbps.
7500B Data Module
The 7500B data module gives you synchronous or asynchronous connectivity for 
ISDN-Basic Rate Interface applications such as video conferencing, fax, and 
personal computers at speeds up to 64 kbps. The 7500B features three 
connections: one to the Basic Rate Interface line to the system, one to 
a 7500-series telephone, and one (RS-232) to the computer. The module may be 
used stand-alone or in conjunction with a 7500-series telephone. 
						

							DEFINITY® Business Communications System and GuestWorks® Issue 6 
Overview  555-231-208  Issue 1
April 2000
Data Management Solutions 
8-6 Digital interfaces 
8 
						

							Networking Solutions 
9-1 Overview 
9
DEFINITY® Business Communications System and GuestWorks® Issue 6 
Overview  555-231-208  Issue 1
April 2000
9
Networking Solutions
Overview
DEFINITY BCS and GuestWorks provide not only powerful voice and data 
capabilities, but connections to a variety of voice and data networks as well. 
Lucent Technologies has long been a leader in networking. The system continues 
to build on those established networking strengths to offer you network 
management features, network interfaces, a variety of private network 
configurations, and end-to-end ISDN capabilities. Lucent Technologies’ 
leadership in developing and supporting open international networking standards 
is also apparent in the system’s compatibility with the QSIG global standard.
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.
Centralized Voice Mail via Interswitch 
Mode Codes
Provides the capability to share a voice mail system among several switches 
using the Mode Code - Voice Mail System Interface. This feature provides a cost 
effective choice for multiple sites by eliminating the need for a voice mail system 
at each site.
A Centralized Voice Mail network can consist of DEFINITY BCS Issue 6 or later, 
DEFINITY ECS R8 or later, ProLogix™ R3 or later, Merlin Legend
® R6.1 or later, 
and Merlin Magix™ systems. Either a DEFINITY BCS, ProLogix, or DEFINITY 
ECS switch must be the host for the voice mail system, and UDP and ISDN-PRI 
software are required at each site. See 
DEFINITY ECS Administration for Network 
Connectivity
 and Merlin Legend Network Reference for more information. 
						

							DEFINITY® Business Communications System and GuestWorks® Issue 6 
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Networking Solutions 
9-2 QSIG global networking 
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QSIG global networking
Lucent Technologies is the first vendor to provide compatibility with the QSIG 
global networking protocol. This means you can connect the system with other 
systems 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.
QSIG is the generic name for a family of signaling protocols. The Q-reference 
point or interface is the logical point where signaling is passed between two peer 
entities in a private network.
DEFINITY BCS and GuestWorks supports only the QSIG Basic features, which 
are voice and data basic call setup with Number Identification and Transit 
Counter. QSIG Number Identification allows a switch to send and receive the call-
ing number, and displays up to 15 digits for the calling and connected numbers 
across ISDN-PRI interfaces.
World Class Routing
The system has been designed to be a world-class system that meets the needs 
of all customers. One capability essential in meeting those needs is the ability to 
dial any location in the world, regardless of the dial plan used at that location. In 
recognition of this requirement, the system has been designed with World Class 
Routing.
World Class Routing is a powerful enhancement to the system’s call-routing capa-
bilities. ARS links several call-routing features to build a communications network 
capable of providing flexible call routing for any type of dialing plan, while accom-
modating changes in both international and local dialing plans.
The following are key components of World Class Routing:
nDigit Conversion converts a dialed public network number into a private 
network number and vice versa. Dialed numbers matching entries in the 
digit conversion tables are treated and converted. Converted calls can be 
routed via the most optimum route, resulting in reduced network charges 
and appropriate use of the private network.
nToll Analysis compares a dialed number to entries in the system’s list. 
Based on the results, calls may be restricted from completion.
nAutomatic Route Selection digit analysis compares a dialed public network 
number with entries in the system’s tables, mapping the number to a 
selected public network routing pattern. 
						

							DEFINITY® Business Communications System and GuestWorks® Issue 6 
Overview  555-231-208  Issue 1
April 2000
Networking Solutions 
9-3 Network management features 
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nAutomatic Alternate Routing digit analysis compares a dialed private 
network number with entries in the system’s tables, mapping the number to 
a selected private network routing pattern.
World Class Routing supports the Automatic Route Selection and Automatic Alter-
nate Routing as separate features, but through generalized administration appli-
cable to both features, provides both of them with the same routing abilities. In 
addition, there are a number of capabilities that enhance the flexibility of routing in 
supporting your local and/or global calling requirements.
For example, 18-digit routing allows the system to determine call routing by ana-
lyzing up to 18 digits with no restriction on the grouping or format of the digits, 
thereby eliminating any assumptions about the use of a particular dialing plan.
International Direct Distance Dialed calls generally consist of an international 
access code, a country code, and a national number. Both codes may vary in 
length. Support for International Direct Distance Dialed calls eliminates any 
restriction on the grouping and formatting of digits on Automatic Route Selection 
numbers. Call routing is determined by the digits and the length of the dialed num-
ber.
Multinational World Class Automatic Alternate Routing allows the Automatic Alter-
nate Routing number (Electronic Tandem Network number) to be any number of 
digits in length.
Digit conversion can be used to reroute numbers that are initially dialed to use 
ARS to be converted to use Automatic Alternate Routing and vice versa. This util-
ity can analyze a maximum of 18 digits. In this way, destinations in a customer’s 
network can be called using the public network number. This feature can also be 
used to reroute certain Direct Distance Dialed destinations to specified alternate 
destinations (such as intercept, attendant, or another Direct Distance Dialed num-
ber). 
Network management features
The system has a variety of features that enable you to manage your network 
resources effectively. The following are just a few examples of features that can 
be used to manage your network:
nAutomatic Route Selection
nAutomatic Alternate Routing
nTime-of-Day Routing
nSubnetwork Trunking
nGeneralized Route Selection
nFacility Restriction Level 
						

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Networking Solutions 
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nBearer-Capability Class
nAuthorization Codes.
Automatic Route Selection
Automatic Route Selection (ARS) routes public network calls on the most 
desirable (usually the most economical) trunking facilities available on your 
system when the call destinations are accessible through your public network.
The system supports up to 40 routing patterns. Each routing pattern consists of up 
to 16 routing preferences (types of facilities) set up in the order in which you want 
them checked when a call is placed. Typically, the least expensive facility will be 
first on the list; the most expensive will be last.
If Generalized Route Selection is not being used when a call is made, the system 
selects a routing pattern based on the digits dialed. The routing preferences in 
that pattern are checked in the order in which they were listed, and the first avail-
able facility is used to place the call. If no facility is available, the call can be 
queued until a facility becomes available. 
Automatic Alternate Routing
Automatic Alternate Routing (AAR) allows private network calls to originate and 
terminate at one or many locations without accessing the public network. When a 
user dials an access code and phone number, AAR selects the most desirable 
route for the call and performs digit conversion as necessary. If the first choice 
route is unavailable, another route is chosen automatically.
The numbers called using AAR are normally private-network numbers. However, 
users can call a public-network number, a service code, an international number, 
operator access code, or an operator-assisted dialing number. With AAR and 
Subnet Trunking, users have a convenient way to place international calls to 
frequently-called foreign cities. Such calls route as far as possible over the private 
network, and then access the public network. This saves toll charges and allows 
users to use your private network as much as possible.
Time-of-Day Routing
Time-of-Day Routing allows you to select the most economical routing of ARS and 
AAR calls based on the time of day and the day of the week that a call is made. 
Up to eight Time-of-Day routing plans may be administered, each scheduled to 
change up to six times a day for each day in the week.
With Time-of-Day Routing, your company can take advantage of lower calling 
rates during specific times. If your company has locations in different time zones, 
you can maximize the use of your public or private network facilities by utilizing 
those facilities in the location that has the lowest calling rates at the particular time 
a call is made. You can also use this feature to change the routing patterns when 
an office is closed and to eliminate unauthorized calls.  
						

							DEFINITY® Business Communications System and GuestWorks® Issue 6 
Overview  555-231-208  Issue 1
April 2000
Networking Solutions 
9-5 Network management features 
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Subnetwork Trunking
Subnet Trunking modifies the number dialed so an AAR or ARS call can route 
over different trunk groups that may terminate in switches with different dial plans. 
Subnet Trunking inserts digits, deletes digits, pauses, and/or waits for dial tone in 
digit outpulsing, as required, so calls route as follows:
nTo or through a remote switch
nOver Tie trunks to a private network switch
nOver CO trunks to the serving CO.
Subnet Trunking is required on calls routing to or through a remote switch, 
regardless of the call’s destination.
Generalized Route Selection
Generalized Route Selection gives you the capability to not only select the optimal 
call routing based on the dialed number, but also to select the appropriate facility 
based on the type of call. Generalized Route Selection enhances Automatic 
Route Selection and Automatic Alternate Routing by incorporating additional 
parameters such as the type of call to be used in deciding how a call is to be 
routed.
Different types of calls require the use of different types of facilities. For example, 
high-speed data calls must use digital facilities, whereas voice and voice-grade 
data calls can use either analog or digital facilities. The system uses Generalized 
Route Selection to differentiate between these and other types of calls and route 
them on the appropriate trunks. Based on the call types and available trunk facili-
ties, voice and data calls may be routed over different trunk types or integrated on 
the same trunk group. The system also provides the capability to route calls 
based on the data format and the need for restricted or unrestricted facilities.
To select the appropriate trunking facility for a call, the system must know the type 
of call being made. To do this, each originating facility such as a telephone or data 
module has a bearer-capability class assigned. Some originating facilities, such 
as data modules, may have multiple bearer-capability classes. Each trunk group 
in the routing pattern is assigned a list of allowed bearer-capability classes. When 
a user makes a call, the system queries the originating facility for its bearer-capa-
bility class and then tries to route the call on a trunk group with a bearer-capability 
class that matches the bearer-capability class of the originating facility. If an exact 
match is not found, the system then tries to find a trunk group with a compatible 
bearer-capability class.
Since the system automatically chooses the right trunk based on the administra-
tion, the system’s dial plan can be independent of the type of call being dialed. 
Users do not have to worry about dialing a different access number for different 
call types. 
						

							DEFINITY® Business Communications System and GuestWorks® Issue 6 
Overview  555-231-208  Issue 1
April 2000
Networking Solutions 
9-6 Network management features 
9
Facility Restriction Levels
Facility Restriction Levels are used to limit user calling privileges for incoming and 
outgoing calls. The Facility Restriction Level determines if a call attempt is 
permitted and which routes can be used or denied in the routing process. Through 
use of the system’s management tools, eight Facility Restriction Levels can be 
assigned to telephones, computers, and trunk groups. The system does not 
require the Facility Restriction Level to be in ascending order when administered 
in the patterns or preferences through system management.
When a call is attempted, the system compares the Facility Restriction Level of 
the telephone with the Facility Restriction Level of the trunk routes available to 
complete the call. If the Facility Restriction Level of the telephone is equal to or 
higher than the Facility Restriction Level of trunks, the call is completed; if it is 
lower, the call is blocked on that preference and compared to the Facility Restric-
tion Level of the next route available. If the call fails to match the Facility Restric-
tion Level on the available preferences, the call may queue for the first available 
and compatible trunk group.
The system also provides a feature called Alternate Facility Restriction Levels that 
allows the attendant to temporarily change the Facility Restriction Levels on origi-
nating facilities to a different set of Facility Restriction Levels. It is used to grant 
users greater access to trunking facilities than is normally provided, such as when 
charges are lower during evening hours.
Bearer-Capability Class
Bearer-capability class uses information available in the system to match the 
calling requirements of a specific call with the best available resources to support 
that call. Bearer capability applies to all calls and support facilities, but is of 
primary significance for data calls. Each call has a bearer requirement — that is, a 
set or range of requirements needed to support that call. For data calls, these 
requirements include data rate, synchronization, and channel type. 
Authorization Codes
Authorization codes are used on certain calls to temporarily raise a telephone’s 
Facility Restriction Level. This is useful for those who make calls from telephones 
other than their own or from outside the network. If a call you dial is blocked 
because the telephone’s Facility Restriction Level is too low, you can enter your 
authorization code. If the Facility Restriction Level associated with the 
authorization code is equal to or higher than the Facility Restriction Level of the 
trunk facilities required to place the call, the call is then completed. Up to 5000 
(csi/si) or 90000 (r) different authorization codes can be provided for your system 
at any one time. Authorization codes can be from 4 to 13 digits long. Through the 
use of the system’s management tools, you can assign authorization codes and 
change their associated Facility Restriction Level and network access 
permissions. 
						

							DEFINITY® Business Communications System and GuestWorks® Issue 6 
Overview  555-231-208  Issue 1
April 2000
Networking Solutions 
9-7 Network interfaces and equipment 
9
Network interfaces and equipment
The system supports a variety of interfaces to voice and data networks. Trunks 
supply links between the system, the public network, and other systems. Digital 
Signal Level 1 interfaces offer high-speed digital connectivity between systems. 
For a complete listing of the trunk and line interfaces available in different 
countries, see the 
DEFINITY® ECS System Description.
Trunk group circuits
Trunks provide the communications links between systems, including central 
office switches and other premises switches. Trunks that perform the same 
function are grouped together and administered as trunk groups. Trunks interface 
with the system via port circuit packs. Trunk group circuit types include the 
following:
nLocal exchange trunks
nTie trunks
nAuxiliary trunks
nDigital trunks.
Local exchange trunks
Local exchange trunks connect the system to a central office. The following are 
some of the types available:
nCentral office trunks which connect the system to the local central office for 
incoming and outgoing calls
nForeign exchange trunks which connect the system to a central office other 
than the local one
nWide Area Telecommunications Service trunks which allow you to place 
long-distance outgoing voice-grade calls to telephones in defined service 
areas; these are priced according to distance in the service area, length of 
the call, time of day, and the day of the week
nToll-free service trunks (such as 800 and 888) which let your business pay 
the charges for inbound long-distance calls so that callers can reach you 
nDirect Inward Dialing trunks which connect the system to the local central 
office for incoming calls dialed directly to stations without attendant 
assistance
nDigital Service 1 trunks which can be used to provide T1 or ISDN Primary 
Rate Interface service. 
						

							DEFINITY® Business Communications System and GuestWorks® Issue 6 
Overview  555-231-208  Issue 1
April 2000
Networking Solutions 
9-8 Network interfaces and equipment 
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Tie trunks
Tie trunks carry communications between the systems in a private network. 
Several types of trunks can be used, depending on the type of private network you 
establish. Tie trunks use a variety of signaling types such as ear and mouth 
(E&M), A-law companding, Mu-law companding, Type 1, and Type 5.
Auxiliary trunks
Auxiliary trunks connect devices in auxiliary cabinets with the system. Some of the 
features that are supported with this type of trunk are recorded announcements, 
telephone dictation service, malicious call trace, and loudspeaker paging.
Digital trunks
The system supports both E1 and Digital Signal Level 1 facilities. As industry 
standards around the world, E1 and Digital Signal Level 1 provide the latest 
alternative to analog trunking.
E1 interface
The system also supports E1 connections. T1/E1 access and conversion allows 
simultaneous connection to both T1 (1.544 Mbps) and E1 (2.048 Mbps) facilities 
(using separate circuit packs).
T1 interfaces
When planning your networking requirements, one of the options you should 
consider is multiplexing over Digital Services 1 (DS1) facilities. As the industry 
standard for interconnecting digital systems, DS1 is an economical alternative to 
analog trunking arrangements. Multiplexing up to 24 digitized voice/data 
communications paths onto a single T1 carrier or other high-speed digital facility 
(such as fibre or microwave) can reduce your network trunking and equipment 
costs.
Used to connect systems to the public network or to other systems in a private 
network, Digital Signal Level 1 also delivers high-speed, end-to-end digital con-
nectivity. Voice and data calls are completed at transmission speeds of up 
to 64 kbps.
The system offers several options in supporting the Digital Signal Level 1 inter-
face. The options include support for voice-grade Digital Signal Level 1 and alter-
nate voice/data. The voice-grade Digital Signal Level 1 interface is a T1 D4 
channel-bank-compatible interface that does the following:
nUses in-band bit-robbed signaling to provide 24 voice-grade-only tie trunks 
consisting of 56 kbps channels for voice and voice-grade data transmission
nInterconnects the system with other systems with an external D4 channel 
bank or with other systems (analog or digital) having the appropriate 
interfaces