Mitel 5540 manual LDN Keys Listed Directory Number, PABX Private Automatic Branch Exchange, Recall

Models: 5540

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LDN Keys (Listed Directory Number)

Mitel 5540 IP Console - User Guide

LDN Keys (Listed Directory Number)

Call-handling keys which allow you to select the sequence in which you answer calls from outside the PABX.

PABX (Private Automatic Branch Exchange)

Telephone switching system for private use by a company.

Recall

A call which returns to the console after being transferred to a busy or unanswered extension.

Software

The routines, programs, and instructions required to run the system.

Trunk

A trunk (outside line) is the external communications link between two switching systems. This link can be between one or more telephone systems (PABXs) or the PABX and Central Office equipment.

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Mitel 5540 manual LDN Keys Listed Directory Number, PABX Private Automatic Branch Exchange, Recall, Software, Trunk