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 hel d 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 li n e
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
PEIProcessor element interchange
personal computer (PC)
A personally controllable microcomputer.
PGATE
Packet gateway
PGN
Partitioned group number
PI Processor interface
PIBProcessor 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