ATT DEFINITY Communications System Generic 3 Planning And Configuration Instructions Manual

							ABBREVIATIONS AND ACRONYMSaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
TTY Teletypewriter
UAP Usage Allocation Plan
UCD Uniform Call Distribution
UCL Unrestricted Call List
UDP Uniform Dial Plan
UPS Uninterruptible Power Supply
VDN Vector Directory Number
VM Voltmeter
WATS Wide Area Telecommunications Service
WGS WorkGroup System
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							aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaGLOSSARY
GLOSSARY
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Access Code
A 1-, 2-, or 3-digit dial code used to activate or cancel a feature or access an outgoing
trunk. The star (*) and pound (#) can be used as the first digit of an access code.
Access Endpoint
Either a non-signaling channel on a DS1 interface or a non-signaling port on an Analog
Tie Trunk circuit pack that is assigned a unique extension.
Access Tie Trunks
Tie trunks used to handle normal Electronic Tandem Network (ETN) calls between main
and tandem switches.
Adjunct Switch Application Interface (ASAI)
An AT&T recommendation for interfacing adjuncts and communications systems,  based
on the CCITT Q.932 specification for layer 3.
Administer
To access and change the parameters associated with the services or features of the
system.
Answer-Back Code
A code dialed to retrieve a parked call.
Appearance
See Call Appearance.
Asynchronous Data Transmission
A scheme for transmitting data where each character is preceded by a start bit and fol-
lowed by a stop bit, thus permitting data elements to occur at irregular intervals.  This
type transmission is advantageous when transmission is not regular (characters typed at
a keyboard).
Asynchronous Data Unit (ADU)
A data communications equipment (DCE)-type device that allows direct connection
between EIA-232C equipment and the system digital switch.
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Attendant
The operator of the console.
Applications Processor
A minicomputer used to support several user-controlled applications such as traffic
analysis and electronic documentation.
Attendant Console
An electronic call-handling position with pushbutton control.  Used by attendants to
answer and place calls and to manage and monitor some of the system operations.
Audio Information Exchange (AUDIX)
A unit that provides voice mail service to users.
Automatic Trunk
A trunk that does not require the sending or receiving of digits.  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 system attendant group.
Automatic Restoration
A service that restores disrupted connections between access endpoints (non-signaling
trunks) and data endpoints (devices that connect the switch to data
terminal/communications equipment).  This restoration is achieved within seconds of a
service disruption so that critical data applications can remain operational.
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Barrier Code
A security code used with the Remote Access feature to prevent unauthorized access to
the system.
Bit (Binary Digit)
One unit of information in binary notation (having two possible states or values, zero
or one).
Bridge (Bridging)
The appearance of a voice terminals extension at one or more other voice terminals.
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Bridged Appearance
A call appearance on a voice terminal that matches a call appearance on another voice
terminal for the duration of a call.
Buffer
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.
Bus
A multi-conductor electrical path used to transfer information over a common connection
from any of several sources to any of several destinations.
Bus, Time Division Multiplex
See Time Division Multiplex Bus.
Business Communications Terminal
An advanced series of semi-intelligent terminals.
Bypass Tie Trunks
One-way, outgoing tie trunks from a tandem switch to a main switch in  an Electronic Tan-
dem Network (ETN).  These 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 bits, 8 bits long, that is usually shorter than a word.  A word is 16 bits
long.
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Call Appearance, Attendant Console
Six buttons, labeled a through f, used to originate, receive, and hold calls.  Each button
has two associated lamps to show the status of the call appearance.
Call Appearance, Voice Terminal
A button labeled with an extension number used to place outgoing calls, receive incoming
calls, or hold calls.  Two lamps next to the button show the status of the call appearance
or status of the call.
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Call Management System (CMS)
An adjunct processor that collects data from an ACD and generates reports to be stored
or displayed concerning status of agents, splits, and trunks.
Callback Call
A call that is automatically returned to a voice terminal user who activated the Automatic
Callback or Ringback Queuing feature.
Call Vector
A set of up to 15 vector commands to be performed for an incoming or internal call.
Call Waiting Ringback Tone
A low-pitched tone identical to the ringback tone except that the tone decreases during
the last 0.2 second.  This tone notifies the attendant that the Attendant Call Waiting
feature has been activated and that the called user is aware of the waiting call.
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.
Central Office (CO)
The location housing telephone switching equipment that provides local telephone ser-
vice and access to toll facilities for long-distance calling.
Central Office Codes
The first three digits of a 7-digit public network telephone number.  These codes are
numbered from 200 through 999.
Central Office Trunk
A telecommunications channel that provides access from the system to the public net-
work through the local central office.
Channel
A communications path for transmitting voice and data.
Class of Restriction (COR)
A number (0 through 63) that specifies the restrictions assigned to voice terminals, voice
terminal groups, data modules, and trunk groups.
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Class of Service (COS)
A number (0 through 15) that specifies if voice terminal users can activate the Automatic
Callback, Call ForwardingÐAll Calls, Data Privacy, or Priority Calling features.
Common Control Switching Arrangement (CCSA)
A private telecommunications network using dedicated trunks and a shared switching
center for interconnecting company locations.
Confirmation Tone
Three short bursts of tone followed by silence; indicates that the feature activated, deac-
tivated, or canceled has been accepted.
Console
See Attendant Console.
Coverage Answer Group
A group of up to eight voice terminals that ring simultaneously when a  call is redirected to
it by Call Coverage. Any one of the group can answer the call.
Coverage Call
A call that is automatically redirected from the called partys extension number 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
The attendant positions (as a group), Direct Department Calling group, Uniform Call Dis-
tribution group, Coverage Answer Group, a voice terminal extension, or Message Center
Hunt Group designated as an alternate answering position in a coverage path.
Covering User
The person at an alternate answering position who answers a coverage call.
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Data Channel
A communications path between two points used to transmit digital signals.
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Data Communications Equipment (DCE)
The equipment on the network side of a communication link that provides all the func-
tions required to make the binary serial data from the source or transmitter compatible
with the communications channel.
Data Terminal Equipment (DTE)
Equipment comprising the source or link of data, or both, that also provides communica-
tion control functions (protocol).  DTE is any piece of equipment at which a communica-
tions path begins or ends.
Delay-Dial Trunk
After a request for service (called a seizure) is detected on an incoming trunk, the  system
sends a momentary signal followed by a steady tone over the trunk.  This informs the cal-
ling party that dialing can start.  This type of trunk allows dialing directly into the system.
That is, the digits are received as they are dialed.
Designated Voice Terminal
The specific voice terminal to which calls, originally directed to a certain extension
number, are redirected.  Commonly used to mean the ``forwarded-to terminal when Call
Forwarding All Calls is active.
Dial Repeating Tie Trunk
A telecommunications channel between two private switching systems.  The number
dialed is repeated or dialed-in at the distant end.
Digital Communications Protocol (DCP)
Defines the capability for providing simultaneous voice and data transmission over the
same channel.
Digital Data Endpoints
In DEFINITY Generic 1, digital data endpoints include the following:
d510D Personal Terminal or 515-Type Business Communications Terminal
d7404D Terminals
d7406D or 7407D Equipped With Optional Data Module Base
dAsynchronous Data Units
dDigital Terminal Data Modules
dModular Processor Data Modules
dModular Trunk Data Modules
d3270 Data Modules
dInternal Data Channels
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Digital Multiplexed Interface (DMI)
Specifies the remote interface requirements for multiplexed data communications
between a host computer and a private switching system.
Digital Terminal Data Module (DTDM)
An adjunct to Model 7403D or 7405D voice terminals.  Provides the required interface
between the system and a data terminal such as a 513 BCT.
Digital Trunk
A circuit in a telecommunications channel designed to handle digital voice and data.
Digit Conversion
A process used to convert specific dialed numbers into other dialed numbers.  ARS uses
Digit Conversion to convert public network numbers (ARS) to private network numbers
(AAR) in order to save toll charges.  AAR uses Digit Conversion to convert private net-
work numbers (ARS) to other private or public network numbers (AAR).
Direct Extension Selection (DXS)
An option at the attendant console that allows an attendant direct access to voice termi-
nals by pressing a Group Select button and a DXS button.
Distributed Communications System (DCS)
A network of two or more switches, each with its terminals and trunks, configured to func -
tion as a single large system.
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Electronic Tandem Network (ETN)
A special tandem tie trunk network that has automatic call routing capabilities based on
the number dialed and most  preferred route available at the time the call is placed.  Each
switch in the network is assigned a unique private network office code (RNX) and each
voice terminal is assigned a unique extension number.
End-to-End Signaling
The transmission of touch-tone  signals generated by dialing from  a voice terminal user to
remote computer equipment.  A connection must first be established over an outgoing
trunk from the calling party to the computer equipment.  Then additional digits can be
dialed to transmit information to be processed by the computer equipment.
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Enhanced Private Switched Communications Service (EPSCS)
A private telecommunications network that provides advanced voice and data telecom-
munications services to companies with many locations.
Extension Number
A 1- to 5-digit number assigned to each voice terminal, certain system groups, data
modules, 510D Personal Terminals, or 515 BCTs within the system.  A 1- or 5-digit
extension number is available for Version 2 and Version 3.
External Call
A connection between a system user and a party on the public telephone  network or on a
tie trunk.
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Facility
A general term used for the telecommunications transmission pathway and associated
equipment.
Feature
A specifically defined function or service provided by the system.
Feature Button
A labeled button on a voice terminal or attendant console designating a specific feature.
Foreign Exchange (FX)
A central office 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 central office other
than its local central office.
Foreign Numbering Plan Area Code (FNPA)
An area code other than the local area code.  The foreign area code must be dialed to
call outside the local geographical area.
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Ground-Start Trunk
On outgoing calls, the system transmits a request for services to the distant switching
system  by grounding the trunk ring lead.  When the distant system is ready 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.  (Tip and ring are common nomenclature to dif-
ferentiate between ground-start trunk leads.)  On incoming calls, detection of ground on
the ring lead is sufficient to cause the call to route to a predetermined destination, nor-
mally the system attendant group.  No digits are received.
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Handshaking Logic
A format used to initiate a data connection between two data module devices.
Home Numbering Plan Area Code (HNPA)
The local area code.  The area code does not have to be dialed to call numbers within
the local geographical area.
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Immediate-Start Tie Trunk
After establishing a connection with the distant switching system for an outgoing call, the
system waits a nominal 65 milliseconds before sending the digits of the called number.
This allows time for the distant system to prepare to receive the digits.  Similarly, on an
incoming call, the system has less than 65 milliseconds to prepare to receive the digits.
Information Exchange
The exchange of data between users of two different systems (DEFINITY G1 and host
computer) over a local area network.
In-Use Lamp
A red lamp on a multi-appearance voice terminal that lights to show which call appear-
ance will be selected when the handset is lifted or which call appearance is active when a
user is off-hook.
Intercept Tone
An alternating high and low tone; indicates a dialing error or denial of the service
requested.
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