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DEFINITY Enterprise Communications Server Release 6
Installation and Test for Multi-Carrier Cabinets
555-230-112
Issue 5
May 1998
Glossary and Abbreviations
Page GL-39
PGATE
Packet gateway
PGN
Partitioned group number
PI
Processor interface
PIB
Processor interface board
pickup group
A group of individuals authorized to answer any call directed to an extension within the group.
PIDB
Product image database
PKTINT
Packet interface
PL
Private line
PLS
Premises Lightwave System
PMS
Property Management System
PN
Port network
PNA
Private network access
POE
Processor occupancy evaluation
POP
Point of presence
port
A data- or voice-transmission access point on a device that is used for communicating with other
devices.
port carrier
A carrier in a multicarrier cabinet or a single-carrier cabinet containing port circuit packs, power
units, and service circuits. Also called a port cabinet in a single-carrier cabinet.
port network (PN)
A cabinet containing a TDM bus and packet bus to which the following components are
connected: port circuit packs, one or two tone-clock circuit packs, a maintenance circuit pack,
service circuit packs, and (optionally) up to four expansion interface (EI) circuit packs in DEFINITY
ECS. Each PN is controlled either locally or remotely by a switch processing element (SPE). See
also expansion port network (EPN)
and processor port network (PPN).
port-network connectivity
The interconnection of port networks (PNs), regardless of whether the configuration uses direct or
switched connectivity.