Avaya Communication Manager, Руководство администратора, Страница: 1818 / 1854

Glossary and Abbreviations
P
1818 Administrator’s Guide for Avaya Communication Manager
November 2003
PPM
1. Parts per million
2. Periodic pulse metering
PPN
See processor port network (PPN) .
PPP
Point-to-Point Protocol
PRI
See Primary Rate Interface (PRI) .
primary extension
The main extension associated with the physical voice or data terminal.
Primary Rate Interface (PRI)
A standard ISDN frame format that specifies the protocol used between two or more communications
systems. PRI runs at 1.544 Mbps and, as used in North America, provides 23 64-kbps B-channels
(voice or data) and one 64-kbps D-channel (signaling). The D-channel is the 24th channel of the
interface and contains multiplexed signaling information for the other 23 channels.
PRI endpoint (PE)
The wideband switching capability introduces PRI endpoints on switch line-side interfaces. A PRI
endpoint consists of one or more contiguous B-channels on a line-side T1 or E1 ISDN PRI facility
and has an extension. Endpoint applications have call-control capabilities over PRI endpoints.
principal
A terminal that has its primary extension bridged on one or more other terminals.
principal (user)
A person to whom a telephone is assigned and who has message-center coverage.
private network
A network used exclusively for the telecommunications needs of a particular customer.
private network office code (RNX)
The first three digits of a 7-digit private network number.
processor carrier
See control carrier .
processor data module (PDM)
A device that provides an RS-232C DCE interface for connecting to data terminals, applications
processors (APs), and host computers, and provides a DCP interface for connection to a
communications system. See also
modular processor data module (MPDM) .
processor port network (PPN)
A port network controlled by a switch-processing element that is directly connected to that PN’s
TDM bus and LAN bus. See also
port network (PN) .
processor port network (PPN) control carrier
A carrier containing the maintenance circuit pack, tone/clock circuit pack, and SPE circuit packs for a
processor port network (PPN) and, optionally, port circuit packs.
PROCR
Processor