Lucent Technologies DEFINITY Enterprise Communication Server Release 8.2 Administrators Guide

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Glossary and abbreviations 
1617  
AT M
See Asynchronous Transfer Mode (ATM).
attendant console
The workstation used by an attendant. The attendant console allows the attendant to originate a call, answer 
an incoming call, transfer a call to another extension or trunk, put a call on hold, and remove a call from hold. 
Attendants using the console can also manage and monitor some system operations. Also called console. See 
also attendant
.
Attention dial (ATD)
A command in the Hayes modem command set for asynchronous modems.
Audio Information Exchange (AUDIX)
A fully integrated voice-mail system. Can be used with a variety of communications systems to provide 
call-history data, such as subscriber identification and reason for redirection.
AUDIX
See Audio Information Exchange (AUDIX).
auto-in trunk group
Trunk group for which the CO processes all of the digits for an incoming call. When a CO seizes a trunk from 
an auto-in trunk group, the switch automatically connects the trunk to the destination — typically an ACD 
split where, if no agents are available, the call goes into a queue in which callers are answered in the order in 
which they arrive.
Auto-In Work mode
One of four agent work modes: the mode in which an agent is ready to process another call as soon as the cur-
rent call is completed.
Automatic Alternate Routing (AAR)
A feature that routes calls to other than the first-choice route when facilities are unavailable.***
Automatic Callback (ACB)
A feature that enables internal callers, upon reaching a busy extension, to have the system automatically con-
nect and ring both parties when the called party becomes available.
Automatic Call Distribution (ACD)
A feature that answers calls, and then, depending on administered instructions, delivers messages appropriate 
for the caller and routes the call to an agent when one becomes available.
Automatic Call Distribution (ACD) split
A method of routing calls of a similar type among agents in a call center. Also, a group of extensions that are 
staffed by agents trained to handle a certain type of incoming call.
Automatic calling unit (ACU)
A device that places a telephone call.
Automatic Circuit Assurance (ACA)
A feature that tracks calls of unusual duration to facilitate troubleshooting. A high number of very short calls 
or a low number of very long calls may signify a faulty trunk.
Automatic Number Identification (ANI)
Representation of the calling number, for display or for further use to access information about the caller. 
automatic restoration
A service that restores disrupted connections between access endpoints (nonsignaling trunks) and data end-
points (devices that connect the switch to data terminal and/or communications equipment). Restoration is 
done within seconds of a service disruption so that critical data applications can remain operational. 
						

							DEFINITY ECS Release 8.2
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Glossary and abbreviations 
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Automatic Route Selection (ARS)
A feature that allows the system to automatically choose the least-cost way to send a toll call.
automatic trunk
A trunk that does not require addressing information because the destination is predetermined. A request for 
service on the trunk, called a seizure, is sufficient to route the call. The normal destination of an automatic 
trunk is the communications-system attendant group. Also called automatic incoming trunk and automatic tie 
trunk.
AUX
Auxiliary
auxiliary equipment
Equipment used for optional system features, such as Loudspeaker Paging and Music-on-Hold.
auxiliary trunk
A trunk used to connect auxiliary equipment, such as radio-paging equipment, to a communications system.
Aux-Work mode
A work mode in which agents are unavailable to receive ACD calls. Agents enter Aux-Work mode when 
involved in non-ACD activities such as taking a break, going to lunch, or placing an outgoing call.
AV D
Alternate voice/data
AWO H
See Administration Without Hardware (AWOH).
AWG
American Wire Gauge
AWT
Average work time
B
B8ZS
Bipolar Eight Zero Substitution.
bandwidth
The difference, expressed in hertz, between the defined highest and lowest frequencies in a range.
barrier code
A security code used with the Remote Access feature to prevent unauthorized access to the system.
Basic Rate Interface (BRI)
A standard ISDN frame format that specifies the protocol used between two or more communications sys-
tems. BRI runs at 192 Mbps and provides two 64-kbps B-channels (voice and data) and one 16-kbps D-chan-
nel (signaling). The D-channel connects, monitors, and disconnects all calls. It also can carry low-speed 
packet data at 9.6 kbps.
baud
A unit of transmission rate equal to the number of signal events per second. See also bit rate
 and bits per sec-
ond (bps). 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
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Glossary and abbreviations 
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BCC
See Bearer capability class (BCC)
.
BCMS
Basic Call Management System
BCT
See business communications terminal (BCT).
Bearer capability class (BCC)
Code that identifies the type of a call (for example, voice and different types of data). Determination of BCC 
is based on the caller’s characteristics for non-ISDN endpoints and on the Bearer Capability and Low-Layer 
Compatibility Information Elements of an ISDN endpoint. Current BCCs are 0 (voice-grade data and voice), 
1 (DMI mode 1, 56 kbps data transmission), 2 (DMI mode 2, synchronous/asynchronous data transmission up 
to 19.2 kbps) 3 (DMI mode 3, 64 kbps circuit/packet data transmission), 4 (DMI mode 0, 64 kbps synchro-
nous data), 5 (temporary signaling connection, and 6 (wideband call, 128–1984 kbps synchronous data).
BER
Bit error rate
BHCC
Busy-hour call completions
bit (binary digit)
One unit of information in binary notation, having two possible values: 0 or 1.
bits per second (bps)
The number of binary units of information that are transmitted or received per second. See also baud
 and bit 
rate.
bit rate
The speed at which bits are transmitted, usually expressed in bits per second. Also called data rate. See also 
baud
 and bits per second (bps).
BLF
Busy Lamp Field
BN
Billing number
BOS
Bit-oriented signaling
BPN
Billed-party number
bps
See bits per second (bps).
bridge (bridging)
The appearance of a voice terminal’s extension at one or more other voice terminals.
BRI
The ISDN Basic Rate Interface specification.
bridged appearance
A call appearance on a voice terminal that matches a call appearance on another voice terminal for the dura-
tion of a call. 
						

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Glossary and abbreviations 
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BTU
British Thermal Unit
buffer
1. In hardware, a circuit or component that isolates one electrical circuit from another. Typically, a buffer 
holds data from one circuit or process until another circuit or process is ready to accept the data.
2. In software, an area of memory that is used for temporary storage.
bus
A multiconductor electrical path used to transfer information over a common connection from any of several 
sources to any of several destinations.
business communications terminal (BCT)
A digital data terminal used for business applications. A BCT can function via a data module as a special-pur-
pose terminal for services provided by a processor or as a terminal for data entry and retrieval.
BX.25
A version of the CCITT X.25 protocol for data communications. BX.25 adds a fourth level to the standard 
X.25 interface. This uppermost level combines levels 4, 5, and 6 of the ISO reference model.
bypass tie trunks
A 1-way, outgoing tie trunk from a tandem switch to a main switch in an ETN. Bypass tie trunks, provided in 
limited quantities, are used as a last-choice route when all trunks to another tandem switch are busy. Bypass 
tie trunks are used only if all applicable intertandem trunks are busy.
byte
A sequence of (usually eight) bits processed together.
C
cabinet
Housing for racks, shelves, or carriers that hold electronic equipment.
cable
Physical connection between two pieces of equipment (for example, data terminal and modem) or between a 
piece of equipment and a termination field.
cable connector
A jack (female) or plug (male) on the end of a cable. A cable connector connects wires on a cable to specific 
leads on telephone or data equipment.
CACR
Cancellation of Authorization Code Request
CAG
Coverage answer group
call appearance
1. For the attendant console, six buttons, labeled a–f, used to originate, receive, and hold calls. Two lights next 
to the button show the status of the call appearance.
2. For the voice terminal, a button labeled with an extension and used to place outgoing calls, receive incom-
ing calls, or hold calls. Two lights next to the button show the status of the call appearance.
call-control capabilities
Capabilities (Third Party Selective Hold, Third Party Reconnect, Third Party Merge) that can be used in either 
of the Third Party Call Control ASE (cluster) subsets (Call Control and Domain Control). 
						

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Glossary and abbreviations 
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Call Detail Recording (CDR)
A feature that uses software and hardware to record call data (same as CDRU).
Call Detail Recording utility (CDRU)
Software that collects, stores, optionally filters, and outputs call-detail records.
Call Management System (CMS)
An application, running on an adjunct processor, that collects information from an ACD unit. CMS enables 
customers to monitor and manage telemarketing centers by generating reports on the status of agents, splits, 
trunks, trunk groups, vectors, and VDNs, and enables customers to partially administer the ACD feature for a 
communications system.
call-reference value (CRV)
An identifier present in ISDN messages that associates a related sequence of messages. In ASAI, CRVs dis-
tinguish between associations.
call vector
A set of up to 15 vector commands to be performed for an incoming or internal call.
callback call
A call that automatically returns to a voice-terminal user who activated the Automatic Callback or Ringback 
Queuing feature.
call-waiting ringback tone
A low-pitched tone identical to ringback tone except that the tone decreases in the last 0.2 seconds (in the 
United States). Call-waiting ringback tone notifies the attendant that the Attendant Call Waiting feature is 
activated and that the called party is aware of the waiting call. Tones in international countries may sound dif-
ferent.
call work code
A number, up to 16 digits, entered by ACD agents to record the occurrence of customer-defined events (such 
as account codes, social security numbers, or phone numbers) on ACD calls.
CAMA
Centralized Automatic Message Accounting
carrier
An enclosed shelf containing vertical slots that hold circuit packs.
carried load
The amount of traffic served by traffic-sensitive facilities during a given interval.
CARR-POW
Carrier Port and Power Unit for AC Powered Systems
CAS
Centralized Attendant Service or Call Accounting System
capability
A request or indication of an operation. For example, Third Party Make Call is a request for setting up a call; 
event report is an indication that an event has occurred. 
						

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Glossary and abbreviations 
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capability group
Set of capabilities, determined by switch administration, that can be requested by an application. Capability 
groups denote association types. For example, Call Control is a type of association that allows certain func-
tions (the ones in the capability group) to be performed over this type of association. Also referred to as 
administration groups or application service elements (ASEs). 
CA-TSC
Call-Associated Temporary Signaling Connection
cause value
A value is returned in response to requests or in event reports when a denial or unexpected condition occurs. 
ASAI cause values fall into two coding standards: Coding Standard 0 includes any cause values that are part 
of AT&T and CCITT ISDN specifications; Coding standard 3 includes any other ASAI cause values. This 
document uses a notation for cause value where the coding standard for the cause is given first, then a slash, 
then the cause value. Example: CS0/100 is coding standard 0, cause value 100.
CBC
Call-by-call or coupled bonding conductor
CC
Country code
CCIS
Common-Channel Interoffice Signaling
CCITT
CCITT (Comitte Consultatif International Telephonique et Telegraphique), now called International Telecom-
munications Union (ITU). See International Telecommunications Union (ITU)
.
CCMS
Control-Channel Message Set
CCS
See capability.
CCS or hundred call seconds
A unit of call traffic. Call traffic for a facility is scanned every 100 seconds. If the facility is busy, it is 
assumed to have been busy for the entire scan interval. There are 3600 seconds per hour. The Roman numeral 
for 100 is the capital letter C. The abbreviation for call seconds is CS. Therefore, 100 call seconds is abbrevi-
ated CCS. If a facility is busy for an entire hour, then it is said to have been busy for 36 CCS. See also 
Erlang
.
CCSA
Common-Control Switching Arrangement
CDM
Channel-division multiplexing
CDOS
Customer-dialed and operator serviced
CDPD
Customer database-provided digits
CDR
See Call Detail Recording (CDR).
CDRP
Call Detail Record Poller 
						

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Glossary and abbreviations 
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CDRR
Call Detail Recording and Reporting
CDRU
See Call Detail Recording utility (CDRU).
CED
Caller entered digits
CEM
Channel-expansion multiplexing
center-stage switch (CSS)
The central interface between the processor port network and expansion port networks in a CSS-connected 
system.
central office (CO)
The location housing telephone switching equipment that provides local telephone service and access to toll 
facilities for long-distance calling.
central office (CO) codes
The first three digits of a 7-digit public-network telephone number in the United States.
central office (CO) trunk
A telecommunications channel that provides access from the system to the public network through the local 
CO.
CEPT1
European Conference of Postal and Telecommunications Rate 1
CESID
Caller’s Emergency Service Identification
channel
1. A circuit-switched call.
2. A communications path for transmitting voice and data.
3. In wideband, all of the time slots (contiguous or noncontiguous) necessary to support a call. Example: an 
H0-channel uses six 64-kbps time slots.
4. A DS0 on a T1 or E1 facility not specifically associated with a logical circuit-switched call; analogous to a 
single trunk.
channel negotiation
The process by which the channel offered in the Channel Identification Information Element (CIIE) in the 
SETUP message is negotiated to be another channel acceptable to the switch that receives the SETUP mes-
sage and ultimately to the switch that sent the SETUP. Negotiation is attempted only if the CIIE is encoded as 
Preferred. Channel negotiation is not attempted for wideband calls.
CI
Clock input
circuit
1. An arrangement of electrical elements through which electric current flows.
2. A channel or transmission path between two or more points.
circuit pack
A card on which electrical circuits are printed, and IC chips and electrical components are installed. A circuit 
pack is installed in a switch carrier. 
						

							DEFINITY ECS Release 8.2
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Glossary and abbreviations 
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CISPR
International Special Committee on Radio Interference
Class of Restriction (COR)
A feature that allows up to 96 classes of call-origination and call-termination restrictions for voice terminals, 
voice-terminal groups, data modules, and trunk groups. See also Class of Service (COS)
.
Class of Service (COS)
A feature that uses a number to specify if voice-terminal users can activate the Automatic Callback, Call For-
warding All Calls, Data Privacy, or Priority Calling features. See also Class of Restriction (COR)
.
cm
Centimeter
CM
Connection Manager
CMC
Compact Modular Cabinet
CMDR
Centralized Message Detail Recording
CMS
Call Management System
CO
See central office (CO).
common-control switching arrangement (CCSA)
A private telecommunications network using dedicated trunks and a shared switching center for interconnect-
ing company locations.
communications system
The software-controlled processor complex that interprets dialing pulses, tones, and keyboard characters and 
makes the proper connections both within the system and external to the system. The communications system 
itself consists of a digital computer, software, storage device, and carriers with special hardware to perform 
the connections. A communications system provides voice and data communications services, including 
access to public and private networks, for telephones and data terminals on a customer’s premises. See also 
switch
.
confirmation tone
A tone confirming that feature activation, deactivation, or cancellation has been accepted.
connectivity
The connection of disparate devices within a single system.
console
See attendant console
.
contiguous
Adjacent DS0s within one T1 or E1 facility or adjacent TDM or fiber time slots. The first and last TDM bus, 
DS0, or fiber time slots are not considered contiguous (no wraparound). For an E1 facility with a D-channel, 
DS0s 15 and 17 are considered contiguous.
control cabinet
See control carrier
. 
						

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Glossary and abbreviations 
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control carrier
A carrier in a multi-carrier cabinet that contains the SPE circuit packs and, unlike an G3r control carrier, port 
circuit packs. Also called control cabinet in a single-carrier cabinet. See also switch-processing element 
(SPE).
controlled station
A station that is monitored and controlled via a domain-control association.
COR
See Class of Restriction (COR).
COS
See Class of Service (COS).
coverage answer group
A group of up to eight voice terminals that ring simultaneously when a call is redirected to it by Call Cover-
age. Any one of the group can answer the call.
coverage call
A call that is automatically redirected from the called party’s extension to an alternate answering position 
when certain coverage criteria are met.
coverage path
The order in which calls are redirected to alternate answering positions.
coverage point
An extension or attendant group, VDN, or ACD split designated as an alternate answering position in a cover-
age path.
covering user
A person at a coverage point who answers a redirected call.
CP
Circuit pack
CPE
Customer-premises equipment
CPN
Called-party number
CPN/BN
Calling-party number/billing number
CPTR
Call-progress-tone receiver
CRC
Cyclical Redundancy Checking
critical-reliability system
A system that has the following duplicated items: control carriers, tone clocks, EI circuit packs, and cabling 
between port networks and center-stage switch in a CSS-connected system. See also duplicated common con-
trol, and duplication.
CSA
Canadian Safety Association or Customer Software Administrator
CSCC
Compact single-carrier cabinet 
						

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Glossary and abbreviations 
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CSCN
Center-stage control network
CSD
Customer-service document
CSM
Centralized System Management
CSS
See center-stage switch (CSS).
CSSO
Customer Services Support Organization
CSU
Channel service unit
CTS
Clear to Send
CWC
See call work code.
D
DAC
1. Dial access code or Direct Agent Calling
2. See digital-to-analog converter (DAC)
.
data channel
A communications path between two points used to transmit digital signals.
data-communications equipment (DCE)
The equipment (usually a modem, data module, or packet assembler/disassembler) on the network side of a 
communications link that makes the binary serial data from the source or transmitter compatible with the 
communications channel.
data link
The configuration of physical facilities enabling end terminals to communicate directly with each other.
data module
An interconnection device between a BRI or DCP interface of the switch and data terminal equipment or data 
communications equipment.
data path
The end-to-end connection used for a data communications link. A data path is the combination of all ele-
ments of an interprocessor communication in a DCS.
data port
A point of access to a computer that uses trunks or lines for transmitting or receiving data.
data rate
See bit rate
.