ATT DEFINITY Communications System Generic 3 Basic Call Management System Instructions Manual

Glossary
Issue  4  September 1995GL-21 
minor alarm
An ind i cation of a failure that could affect customer service. Minor alarms are automatic ally dis-
played on LEDs on the attendant console and maintenance or alarming  circuit pack, sent to the 
alarm log, and reported to a remote maintenance fac ility, if applic a ble.
modem
A device that converts digital data signals to analog signals for transmission over telephone cir-
c uits. The analog signals are converted back to the original digital data...

Glossary
GL-22Issue  4  September 1995 
N
N x DS0
N x DS0, equivalently referred to as N~x 64 ~kbps, is an emerging standard for wideband calls 
separate from H0, H11, and H12 ISDN channels. The emerging N x DS0 ISDN multirate circuit 
mode bearer service will provide circuit-switched calls with data rate multiples of 64 kbps up to 
1536 kb p s on a T1 facility or up  to 1920 kb p s on an E1 facility. In the switch, N x DS0 channels will 
ran g e up to 1984 k bp s  usi n g NFAS E1 interfaces.
narrowband...

Glossary
Issue  4  September 1995GL-23 
P
packet
A group of bits (em including a message element, which is the d ata, and a control information ele-
ment (IE), which is the header (em used in packet switching and transmitted as a discrete unit. In 
each packet, the message element and control IE are arranged in a specified format. See also 
packet bus an d packet switching.
packet bus
A wide-bandwidth bus that transmits packets.
packet switching
A data-transmission technique whereb y user information is...

Glossary
GL-24Issue  4  September 1995 
port-network connectivity
The interconnection of port networks (PNs), regardless of whether the configuration uses direct or 
switched connectivity.
Primary Rate Interface (PRI)
A standard Integrated Servi ces Digital Network (ISDN) frame format that spec ifies the protocol 
used  between two or more communications systems. PRI runs at 1.544 Mbps and, as used in 
North America, provides 23 64~kb p s %B-channels (voice or data) and one 64~ kbps %D-channel...

Glossary
Issue  4  September 1995GL-25 
Q
quadrant
A quadrant is a group of six contiguous DS0s in fixed locations on an ISDN PRI fac ility. Note that 
this term  comes from T1 terminology (one-fourth of a T1), but there are five quadrants on an E1 
ISDN PRI facility (30B + D).
A quadrant is considered available or idle when all six contiguous DS0s are idle. Otherwise, the 
quadrant is considered contaminated or partially contaminated. This is a dynamic condition; 
quadrants b e come i dle and  c...

Glossary
GL-26Issue  4  September 1995 
report scheduler
Software that is used in conjunction with the system printer for the purpose of scheduling the days 
of the week and time of day that the desired reports are to be printed.
RS232C
A physical interface specified by the EIA. RS232C transmits an d  receives asynchronous data at 
speed s of up to 19.2 kb p s over cable distances of up to 50 feet.
ROSE
Remote Operations Servic e Element is a CCITT and  ISO stan d ard that defines a notation and ser-
vi...

Glossary
Issue  4  September 1995GL-27 
staffed
Indicates an agent position is logged-in. A staffed agent will be functioning in one of four work 
modes: Auto-In, Manual-In, ACW, or AUX-work.
Station Message Detail Recording (SMDR)
An obsolete term now called CDR (see  call detail recording), which is a switch feature that uti-
lizes software and hardware to record call data.
standard serial interface (SSI)
A communications protocol developed  by AT&T Teletyp e Corporation for use with the 500 busi-
ness...

Glossary
GL-28Issue  4  September 1995 
requires a sp e cial login, referred to as the system administrator login, in order to gain ac cess to 
the system administration capabilities.
system printer
An optional printer that may be use d to print scheduled reports via the report scheduler.
system report
Provides historical traffic information for all internally measured splits.
system status report
Provide real-time status information for internally measured splits.
system manager
A person responsible for...

Glossary
Issue  4  September 1995GL-29 
time-division multiplexing (TDM)
Multiplexing that divides a transmission channel into su ccessive time slots. See also multiplex-
ing.
time interval
The period of time, either one hour or one-half hour, that BCMS measurements are collected for a 
report(s).
time slice
See time interval.
time slot
A time slot refers to 64 kb p s of d i gital information structured as eight bits every 125 micro-sec-
onds. In the switch, a time slot refers to either a DS0 on a T1 or...

Glossary
GL-30Issue  4  September 1995 
V
vector directory number (VDN)
An extension that provides access to the Vectoring feature on the switch. Vectoring allows a cus-
tomer to spec ify the treatment of inc oming   calls based on the dialed number.
vector-controlled split
A hunt group or ACD split administered with the ‘‘vector’’ field enabled. Access to such split is 
only possible by dialing a VDN extension. Vector-Controlled Splits cannot be Active Notification 
Domains.
voice terminal
A single-line...