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Panasonic Digital Business System - Operating Instructions

March 1997 Issue 24

Conference Calls

A conference call is call involving more than two parties. The DBS provides four methods of conferencing calls.

These are:

• External Conference

• Internal Conference

• Trunk To Trunk Conference

• Busy Override

• Privacy Release

An external conference is a call involving two system extensions and an outside line call.

An internal conference is a call involving three system extensions.

Trunk To Trunk Conference is a conference call involving two exchange lines and one internal caller. All parties

are cut off if the internal caller drops out of the conference. (See the previous section for the operation of trunk to

trunk transfer and conference )

Busy Override requires system programming . Using it allows an extension to break into the call of another

extension and force a conference call. The extensions must be in the same paging group other than group 0 and

have been given the ability to make and receive break in. This programming must be performed by a qualified

engineer. Busy override will not break into an existing conference call nor will it work if the originating extension is

already in a conference.

Privacy Release is an alternative method of creating an external conference by allowing another extension to pick

up the same line and join in the call.

An internal party to a conference call can drop out by hanging up or pressing the FLASH key.

The DBS can support eight conference calls simultaneously and optionally via programming provide a conference

splash tone to indicate a conference call is in progress.

SLTs and VB3011 Constraints When Conferencing

These are single line devices and as such cannot deal with calls involving more than one external line or channel.

Whilst a two extension to single line call is possible, one extension to two lines or channels cannot be invoked by

or for an SLT or VB3011 extension.

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Panasonic dBs Betriebsanleitung Seite 38