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Glossary and Abbreviations
555-230-024GL-38 Issue 5 January 1998
party/extension active on call
A party is on the call if he or she is actually connected to the call (in active talk or in held state). An
originator of a call is always a party on the call. Alerting parties, busy parties, and tones are not
parties on the call.
PBX
Private branch exchange
PC
See personal computer (PC).
PCM
See pulse-code modulation (PCM).
PCOL
Personal central-office line
PCOLG
Personal central-office line group
PCS
Permanent switched calls
PDM
See processor data module (PDM).
PDS
Premises Distribution System
PE
Processing element
PEC
Price element code
PEI
Processor element interchange
personal computer (PC)
A personally controllable microcomputer.
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