Lucent Technologies Enterprise Communications Server manual See Primary Rate Interface PRI

DEFINITY® Enterprise Communications Server Release 7	Issue 4
Console Operations 555-230-700	June 1999
Glossary and Abbreviations
	77

N

network

A series of points, nodes, or stations connected by communications channels.

P

PBX

Private branch exchange

PRI

See Primary Rate Interface (PRI).

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.

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.

public network

The network that can be openly accessed by all customers for local and long-distance calling.

Q

queue

An ordered sequence of calls waiting to be processed.

S

SAC

Send All Calls

simulated bridged appearance

The same as a temporary bridged appearance; allows the terminal user (usually the principal) to bridge onto a call that had been answered by another party on his or her behalf.