AT&T 3.0 manual Pbx

Glossary

out-of-band	Signaling that uses the same path as voice-frequency
signaling	transmission and in which the signaling is outside the
	band used for voice frequencies.

P

parity	The addition of a bit to a bit string so that the total number
	of ones is odd or even, used to detect and correct
	transmission errors.

PassageWay Direct Connect Solution

Set of software applications to provide an interface between a personal computer and the system: cardfile, telephone programming application, call log and viewer, incoming call management and identification and applications manager.

pass-through	Connection from the internal modem to an attached IS II/IS Ill
	application on the system.
PBX	(private branch exchange) Local electronic telephone
	switch that serves local stations (for example, extensions
	within a business) and provides them with access to the
	public network.
PC	(personal computer)
PCMCIA memory	Personal Computer Memory Card International Association
card	memory card) See memory card.
personal line	Central office trunk that terminates directly on one or more
	telephones. In Hybrid/PBX mode, a personal line cannot
	be part of a trunk pool. Also called “DFT” (direct facility
	termination). Also refers to lines represented on line
	buttons in Key Mode.

Maintenance and Troubleshooting GL–25