ATT DEFINITY Communications System Generic 3 Instructions Manual

Glossary
Issue  3   March 1996GL-23 
network-specific facility (NSF)
An information element in an ISDN-PRI message that specifies which public-network service is 
used. NSF applies only when Call-by-Call Servic e Selection is used to access a public-network 
service.
network interface
 A common boundary b etween two systems in an interconnected group of systems.
node
A switching or control p oint for a network. Nodes are either ‘‘tandem’’ (em they receive signals 
and pass them on (em or ‘‘terminal’’ (em...

Glossary
GL-24Issue  3   Marc h 1996 
primary extension
The main extension assoc iated with the physical station set.
principal
A station that has its primary extension bridged on one or more other stations.
personal computer (PC)
A p ersonally c ontrollab le microcomputer.
pickup group
A group of individuals authorized to answer any c all directed to an extension number within the 
group.
port
A data- or voice-transmission access point on a device that is used for communicating with other 
devices.
port...

Glossary
Issue  3   March 1996GL-25 
processor carrier
A phrase used for ‘‘control carrier’’ in G3rV2. See also control carrier.
processor data module (PDM)
A device that provides an RS232C data communications equipment (DCE) interface for connect-
ing  to data terminals, applications processors (APs), and host computers and provid es a digital 
communications protocol (DCP) interfa ce for c onnection to a communications system. See also 
modular processor data module.
processor port network (PPN)
A port...

Glossary
GL-26Issue  3   Marc h 1996 
R
R2-MFC signaling
MultiFrequency compelled (MFC) signaling is a form of number signaling similar to Dual-Tone 
MultiFrequency (DTMF) in that tones convey the dialed number. R2-MFC is a version of MFC 
recommended by CCITT for signaling between a CO and a PBX o ver  a nal og  or  d igital CO, DID, or 
tie trunks.
random access memory (RAM)
A storage arrangement whereby information can be retrieved at a speed independent of the loca-
tion of the stored  information....

Glossary
Issue  3   March 1996GL-27 
S
sanity and control interface (SAKI)
A custom, very-large-scale-inte gration (VLSI) microchip located on each p ort circuit pack. The 
SAKI provides address recognition, buffering, and synchronization between the angel and the 
five control time slots that make up the c ontrol channel. The SAKI also scans and collects status 
information for the angel on its port circ uit pack and, when polled, transmits this information to the 
archangel.
simplex system
A system...

Glossary
GL-28Issue  3   Marc h 1996 
status lamp
A green light that shows the status of a call appearance or a feature b utton b y the state of the light 
(lit, flashing, fluttering, broken flutter, or unlit).
stroke counts
A method used b y Automatic Call Distribution (ACD) agents to record up to nine cus-
tomer-defined events per call when the Call Management System (CMS) is active.
switch
Any kind of telephone switching system. See also communications system.
switchhook
The buttons lo cated  under...

Glossary
Issue  3   March 1996GL-29 
system manager
A person responsible for specifying and administering features and services for a system.
system reload
A p ro cess that allows stored data to be written from a tape into the system memory (normally after 
a power outage).
T
T1
A digital transmission standard that in North America carries traffic at the digital signal level-1 
(DS1) rate of 1.544 Mbps. A T1 facility is divided into 24 channels (DS0s) of 64 k b ps information 
numbered from 1 to 24....

Glossary
GL-30Issue  3   Marc h 1996 
time slot
A time slot refers to 64 kbps of digital information structured as eig ht bits every 125 micro-sec-
onds. In the switch, a time slot refers to either a DS0 on a T1 or E1 fa cility or a 64 kbps unit on the 
TDM b us or fiber connection between port networks.
time slot sequence integrity
Time slot sequence integrity means that the ‘‘N’’ octets of a wideband call that are transmitte d in 
one T1 or E1 frame arrive at the output in the same order that they were...

Glossary
Issue  3   March 1996GL-31 
vector-controlled split
A hunt group or ACD split administered with the ‘‘vector’’ field enabled. A c cess to such split is 
only possible by dialing a VDN extension. Vec tor-Controlled Splits cannot be Active Notification 
Domains.
voice terminal
A single-line or multiappearance telephone.
W
wide area tele-communications service (WATS)
 A service in the USA that allows c alls to a certain area or areas for a flat-rate c harg e based on 
expected usage.
wideband
A...

Glossary
GL-32Issue  3   Marc h 1996 
write operation
The process of putting information onto a storage medium, such as a hard disk.