Lucent Technologies DEFINITY Enterprise Communication Server Release 8.2 Upgrades And Additions Manual

							DEFINITY ECS Release 8.2
Upgrades and Additions for R8.2si  555-233-122  Issue 1
April 2000
Glossary and Abbreviations 
GL-15  
CSM
Centralized System Management
CSS
See 
c enter-stag e switc h (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 
d ig ital-to-analog  c onverter (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 elements 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 
b it rate.
data service unit (DSU)
A device that transmits digital data on transmission facilities.
data terminal
An input/output (I/O) device that has either switched or direct access to a host computer or to a 
processor interface. 
						

							DEFINITY ECS Release 8.2
Upgrades and Additions for R8.2si  555-233-122  Issue 1
April 2000
Glossary and Abbreviations 
GL-16  
data terminal equipment (DTE)
Equipment consisting of the endpoints in a connection over a data circuit. In a connection between 
a data terminal and host, the terminal, the host, and their associated modems or data modules 
make up the DTE. 
dB
Decibel
dBA
Decibels in reference to amperes.
dBrnC
Decibels above reference noise with C filter.
DC
Direct current
DCE
Data-communications equipment
D-channel backup
Type of backup used with Non-Facility Associated Signaling (NFAS). A primary D-channel provides 
signaling for an NFAS D-channel group (two or more PRI facilities). A second D-channel, on a 
separate PRI facility of the NFAS D-channel group, is designated as backup for the D-channel. 
Failure of the primary D-channel causes automatic transfer of call-control signaling to the backup 
D-channel. The backup becomes the primary D-channel. When the failed channel returns to 
service, it becomes the backup D-channel.
DCO
Digital central office
DCP
Digital Communications Protocol
DCS
Distributed Communications System
DDC
Direct Department Calling
DDD
Direct Distance Dialing
delay-dial trunk
A trunk that allows dialing directly into a communications system (digits are received as they are 
dialed).
denying a request
Sending a negative acknowledgement (NAK), done by sending an FIE with a 
return error 
component (and a cause value). It should not be confused with the denial event report that applies 
to calls.
designated voice terminal
The specific voice terminal to which calls, originally directed to a certain extension, are redirected. 
Commonly used to mean the forwarded-to terminal when Call Forwarding All Calls is active.
dial-repeating trunks
A PBX tie trunk that is capable of handling PBX station-signaling information without attendant 
assistance. 
						

							DEFINITY ECS Release 8.2
Upgrades and Additions for R8.2si  555-233-122  Issue 1
April 2000
Glossary and Abbreviations 
GL-17  
dial-repeating tie trunk
A tie trunk that transmits called-party addressing information between two communications 
systems.
DID
Direct Inward Dialing
digit conversion
A process used to convert specific dialed numbers into other dialed numbers.
digital
The representation of information by discrete steps. See also 
analog.
digital communications protocol (DCP)
A proprietary protocol used to transmit both digitized voice and digitized data over the same 
communications link. A DCP link is made up of two 64-kbps information (I-) channels and one 
8-kbps signaling (S-) channel. 
digital data endpoints
In DEFINITY ECS, devices such as the 510D terminal or the 515-type business communications 
terminal (BCT).
digital multiplexed interface (DMI)
An interface that provides connectivity between a communications system and a host computer or 
between two communications systems using DS1 24th-channel signaling. DMI provides 23 64-kbps 
data channels and 1 common-signaling channel over a twisted-pair connection. DMI is offered 
through two capabilities: bit-oriented signaling (DMI-BOS) and message-oriented signaling 
(DMI-MOS).
digital signal level 0 (DS0)
A single 64-kbps voice channel. A DS0 is a single 64-kbps channel in a T1 or E1 facility and 
consists of eight bits in a T1 or E1 frame every 125 microseconds.
digital signal level 1 (DS1)
A single 1.544-Mbps (United States) or 2.048-Mbps (outside the United States) digital signal carried 
on a T1 transmission facility. A DS1 converter complex consists of a pair, one at each end, of DS1 
converter circuit packs and the associated T1/E1 facilities.
digital terminal data module (DTDM)
An integrated or adjunct data module that shares with a digital telephone the same physical port for 
connection to a communications system. The function of a DTDM is similar to that of a PDM and 
MPDM in that it converts RS-232C signals to DCP signals.
digital-to-analog converter (DAC)
A device that converts data in digital form to the corresponding analog signals. See also 
analog -to-d ig ital c onverter (ADC).
digital transmission
A mode of transmission in which information to be transmitted is first converted to digital form and 
then transmitted as a serial stream of pulses.
digital trunk
A circuit that carries digital voice and/or digital data in a telecommunications channel.
DIOD
Direct Inward and Outward Dialing 
						

							DEFINITY ECS Release 8.2
Upgrades and Additions for R8.2si  555-233-122  Issue 1
April 2000
Glossary and Abbreviations 
GL-18  
direct agent
A feature, accessed only via ASAI, that allows a call to be placed in a split queue but routed only to 
a specific agent in that split. The call receives normal ACD call treatment (for example, 
announcements) and is measured as an ACD call while ensuring that a particular agent answers.
Direct Extension Selection (DXS)
A feature on an attendant console that allows an attendant direct access to voice terminals by 
pressing a group-select button and a DXS button.
Direct Inward Dialing (DID)
A feature that allows an incoming call from the public network (not FX or WATS) to reach a specific 
telephone without attendant assistance.
Direct Inward Dialing (DID) trunk
An incoming trunk used for dialing directly from the public network into a communications system 
without help from the attendant.
disk drive
An electromechanical device that stores data on and retrieves data from one or more disks.
distributed communications system (DCS)
A network configuration linking two or more communications systems in such a way that selected 
features appear to operate as if the network were one system.
DIVA
Data In/Voice Answer
DLC
Data line circuit
DLDM
Data-line data module
DMI
Digital-multiplexed interface
DND
Do not disturb
DNIS
Dialed-Number Identification Service
DOD
Direct Outward Dialing
domain
VDNs, ACD splits, and stations. The VDN domain is used for active-notification associations. The 
ACD-split domain is for active-notification associations and domain-control associations. The 
station domain is used for the domain-control associations.
domain-control association
A 
Third Party Domain Control Request capability initiates a unique CRV/link number combination, 
which is referred to as a domain-control association.
domain-controlled split
A split for which 
Third Party Domain Control request has been accepted. A domain-controlled split 
provides an event report for logout. 
						

							DEFINITY ECS Release 8.2
Upgrades and Additions for R8.2si  555-233-122  Issue 1
April 2000
Glossary and Abbreviations 
GL-19  
domain-controlled station
A station for which a 
Third_Party_Domain_Control request has been accepted. A domain-controlled 
station provides event reports for calls that are alerting, connected, or held at the station.
domain-controlled station on a call
A station that is active on a call, and which provides event reports over one or two domain-control 
associations.
DOSS
Delivery Operations Support System
DOT
Duplication Option Terminal
DPM
Dial Plan Manager
DPR
Dual-port RAM
DS1
Digital Signal Level 1
DS1C
Digital Signal Level-1 protocol C
DS1 CONV
Digital Signal Level-1 converter
DSI
Digital signal interface
DSU
Data service unit
DTDM
Digital-terminal data module
DTE
Data-terminal equipment
DTGS
Direct Trunk Group Select
DTMF
Dual-tone multifrequency
DTS
Disk-tape system
duplicated common control
Two processors ensuring continuous operation of a communications system. While one processor 
is online, the other functions as a backup. The backup processor goes online periodically or when a 
problem occurs.
duplication
The use of redundant components to improve availability. When a duplicated subsystem fails, its 
backup redundant system automatically takes over. 
						

							DEFINITY ECS Release 8.2
Upgrades and Additions for R8.2si  555-233-122  Issue 1
April 2000
Glossary and Abbreviations 
GL-20  
duplication option
A system option that duplicates the following: control carrier containing the SPE, EI circuit packs in 
carriers, fiber-optic cabling between port networks, and center-stage switch in a CSS-connected 
system.
DWBS
DEFINITY Wireless Business System
DXS
Direct extension selection
E
E1
A digital transmission standard that carries traffic at 2.048 Mbps. The E1 facility is divided into 32 
channels (DS0s) of 64 kbps information. Channel 0 is reserved for framing and synchronization 
information. A D-channel occupies channel 16.
E & M
Ear and mouth (receive and transmit)
EA
Expansion archangel
EAL
Expansion archangel link
ear and mouth (E & M) signaling
Trunk supervisory signaling, used between two communications systems, whereby signaling 
information is transferred through 2-state voltage conditions (on the E and M leads) for analog 
applications and through a single bit for digital applications.
EEBCDIC
Extended Binary-Coded Decimal Interexchange Code
ECC
Error Correct Code
ECMA
European Computer Manufacturers Association
EFP
Electronic power feed
EI
Expansion interface
EIA
Electronic Industries Association
EIA-232
A physical interface specified by the EIA. EIA-232 transmits and receives asynchronous data at 
speeds of up to 19.2 kbps over cable distances of up to 50 feet. EIA-232 replaces RS-232 protocol 
in some DEFINITY applications. 
						

							DEFINITY ECS Release 8.2
Upgrades and Additions for R8.2si  555-233-122  Issue 1
April 2000
Glossary and Abbreviations 
GL-21  
electronic tandem network (ETN)
A tandem tie-trunk network that has automatic call-routing capabilities based on the number dialed 
and the most preferred route available. Each switch in the network is assigned a unique private 
network office code (RNX), and each voice terminal is assigned a unique extension.
Electronics Industries Association (EIA)
A trade association of the electronics industry that establishes electrical and functional standards.
emergency transfer
If a major system failure occurs, automatic transfer is initiated to a group of telephones capable of 
making outgoing calls. The system operates in this mode until the failure is repaired and the system 
automatically returns to normal operation. Also called power-failure transfer.
EMI
Electromagnetic interference
end-to-end signaling
The transmission of touch-tone signals generated by dialing from a voice terminal to remote 
computer equipment. These digits are sent over the trunk as DTMF digits whether the trunk 
signaling type is marked as tone or rotary and whether the originating station is tone or rotary. 
Example: a call to a voice-mail machine or automated-attendant service. A connection is first 
established over an outgoing trunk. Then additional digits are dialed to transmit information to be 
processed by the computer equipment.
enhanced private-switched communications service (EPSCS)
An analog private telecommunications network based on the No. 5 crossbar and 1A ESS that 
provides advanced voice and data telecommunications services to companies with many locations.
EPN
Expansion-port network
EPROM
Erasable programmable read-only memory
EPSCS
Enhanced Private Switched Communications Services
ERL
Echo return loss
Erlang
A unit of traffic intensity, or load, used to express the amount of traffic needed to keep one facility 
busy for one hour. One Erlang is equal to 36 CCS. See also 
CCS or hund red c all sec ond s.
ESF
Extended superframe format
ESPA
European Standard Paging Access
ETA
Extended Trunk Access; also Enhanced Terminal Administration
ETN
Electronic tandem network
ETSI
European Telecommunications Standards Institute 
						

							DEFINITY ECS Release 8.2
Upgrades and Additions for R8.2si  555-233-122  Issue 1
April 2000
Glossary and Abbreviations 
GL-22  
expansion archangel (EAA)
A network-control microprocessor located on an expansion interface (EI) port circuit pack in an 
expansion port network. The EA provides an interface between the EPN and its controlling 
switch-processing element.
expansion-archangel link (EAL)
A link-access function on the D-channel (LAPD) logical link that exists between a switch-processing 
element and an expansion archangel (EA). The EAL carries control messages from the SPE to the 
EA and to port circuit packs in an expansion port network.
expansion control cabinet
See 
exp ansion c ontrol c arrier.
expansion control carrier
A carrier in a multicarrier cabinet that contains extra port circuit packs and a maintenance interface. 
Also called expansion control cabinet in a single-carrier cabinet.
expansion interface (EI)
A port circuit pack in a port network that provides the interface between a PN’s TDM bus/ packet 
bus and a fiber-optic link. The EI carries circuit-switched data, packet-switched data, network 
control, timing control, and DS1 control. In addition, an EI in an expansion port network 
communicates with the master maintenance circuit pack to provide the EPN’s environmental and 
alarm status to the switch-processing element.
expansion port network (EPN)
A port network (PN) that is connected to the TDM bus and packet bus of a processor port network 
(PPN). Control is achieved by indirect connection of the EPN to the PPN via a port-network link 
(PNL). See also 
p ort network (PN).
extension-in
Extension-In (ExtIn) is the work state agents go into when they answer (receive) a non-ACD call. If 
the agent is in Manual-In or Auto-In and receives an extension-in call, it is recorded by CMS as an 
AUX-In call.
extension-out
The work state that agents go into when they place (originate) a non-ACD call.
external measurements
Those ACD measurements that are made by the External CMS adjunct.
extension
A 1- to 5-digit number by which calls are routed through a communications system or, with a 
Uniform Dial Plan (UDP) or main-satellite dialing plan, through a private network.
external call
A connection between a communications system user and a party on the public network or on 
another communications system in a private network.
F
FA C
Feature Access Code
facility
A telecommunications transmission pathway and associated equipment. 
						

							DEFINITY ECS Release 8.2
Upgrades and Additions for R8.2si  555-233-122  Issue 1
April 2000
Glossary and Abbreviations 
GL-23  
facility-associated signaling (FAS)
Signaling for which a D-channel carries signaling only for those channels on the same physical 
interface.
FA S
Facility-associated signaling
FAT
Facility access trunk
FA X
Facsimile
FCC
Federal Communications Commission
FEAC
Forced Entry of Account Codes
feature
A specifically defined function or service provided by the system.
feature button
A labeled button on a telephone or attendant console used to access a specific feature.
FEP
Front-end processor
FIC
Facility interface codes
fiber optics
A technology using materials that transmit ultrawideband electromagnetic light-frequency ranges for 
high-capacity carrier systems.
fixed
A trunk allocation term. In the fixed allocation scheme, the time slots necessary to support a 
wideband call are contiguous, and the first time slot is constrained to certain starting points.
flexible
A trunk allocation term. In the flexible allocation scheme, the time slots of a wideband call can 
occupy noncontiguous positions within a single T1 or E1 facility.
floating
A trunk allocation term. In the floating allocation scheme, the time slots of a wideband call are 
contiguous, but the position of the first time slot is not fixed.
FNPA
Foreign Numbering-Plan Area
foreign-exchange (FX)
A CO other than the one providing local access to the public telephone network.
foreign-exchange trunk
A telecommunications channel that directly connects the system to a CO other than its local CO.
foreign numbering-plan area code (FNPAC)
An area code other than the local area code, that must be dialed to call outside the local 
geographical area. 
						

							DEFINITY ECS Release 8.2
Upgrades and Additions for R8.2si  555-233-122  Issue 1
April 2000
Glossary and Abbreviations 
GL-24  
FRL
Facilities Restriction Level
FX
Foreign exchange
G
G3-MA
Generic 3 Management Applications
G3-MT
Generic 3 Management Terminal
G3r
Generic 3, RISC (Reduced Instruction Set Computer)
generalized route selection (GRS)
An enhancement to Automatic Alternate Routing/Automatic Route Selection (AAR/ARS) that 
performs routing based on call attributes, such as Bearer Capability Classes (BCCs), in addition to 
the address and facilities restriction level (FRL), thus facilitating a Uniform Dial Plan (UDP) that is 
independent of the type of call being placed.
glare
The simultaneous seizure of a 2-way trunk by two communications systems, resulting in a standoff.
GM
Group manager
GPTR
General-purpose tone receiver
grade of service
The number of call attempts that fail to receive service immediately. Grade of service is also 
expressed as the quantity of all calls that are blocked or delayed.
ground-start trunk
A trunk on which, for outgoing calls, the system transmits a request for services to a distant 
switching system by grounding the trunk ring lead. To receive the digits of the called number, that 
system grounds the trunk tip lead. When the system detects this ground, the digits are sent.
GRS
Generalized Route Selection
H
H0
An ISDN information transfer rate for 384-kbps data defined by CCITT and ANSI standards.
H11
An ISDN information transfer rate for 1536-kbps data defined by CCITT and ANSI standards.