Avaya Communication Manager Administrator's Manual page 1819

Property Management System (PMS)
A stand-alone computer used by lodging and health-services organizations for services such as
reservations, housekeeping, and billing.
protocol
A set of conventions or rules governing the format and timing of message exchanges to control data
movement and correction of errors.
PSA
Personal Station Access
PSAP
Public Safety Answering Points
PSC
Premises service consultant
PSDN
Packet-switch public data network
PSTN
Public switched telephone network
PT
Personal terminal
PTC
Positive temperature coefficient
PTT
Postal Telephone and Telegraph
public network
The network that can be openly accessed by all customers for local and long-distance calling.
pulse-code modulation (PCM)
An extension of pulse-amplitude modulation (PAM) in which carrier-signal pulses modulated by an
analog signal, such as speech, are quantized and encoded to a digital, usually binary, format.
Q
QoS
Quality of Service
QPPCN
Quality Protection Plan Change Notice
QSIG
Q.931 Signaling
quadrant
A group of six contiguous DS0s in fixed locations on an ISDN-PRI facility. 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).
queue
An ordered sequence of calls waiting to be processed.
Administrator's Guide for Avaya Communication Manager
November 2003
Glossary and Abbreviations
1819
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