Vertical Comdial DX-80, Technical Manual

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DX-80 Programming Manual
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6.2 Programming Conference Calls
The system can simultaneously accommodate eight, four-member (party) conferences. Conference combinations
may consist of three CO lines maximum, and any number of extensions, to a maximum of four parties (members).
A supervised conference is a conference in which at least one member is an extension of the DX-80 system. The
DX-80 extension that establishes a conference is the conference controller, and may add and/or delete members of
the conference at any time. The conference controller also has the privilege of establishing an unsupervised con-
ference.
An unsupervised conference is a conference in which only CO lines are members. All members are therefore
outside of the premises and connected together using the DX-80 conference resource. An unsupervised conference
may be re-joined by the initiating DX-80 extension, however, that extension maintains control of the conference
even though it is unsupervised.
One extension directory number is the controller of the conference and constitutes one conference member.
Extension users must first establish a three-member conference before they can establish a four-member con-
ference.
The following conditions apply to CO line conferences.
• The extension that establishes a conference is called the controlling party.
• Only the conference controller can add a new conference connection (party).
• Only the controlling party is allowed to invite or forcibly release any attending internal or external party, or to
setup a “private talk” with any one attending party.
• When adding new parties to a conference and while speaking privately to a particular conference member
other members of the conference will be connected to Music On Hold.
• Each of the calls involved in a holding conference will be placed on Exclusive Hold.
• When the controlling party exits a conference, the most recently invited internal party will be designated as
the new controlling party.
• When a conference is established, each party will hear a burst of conference tone when the conference tone is
enabled.
• You can program the unsupervised conference feature code Feature 7 7 on any available programmable
feature button.
• Only the controller of an unsupervised conference may rejoin an unsupervised conference.
• Conference can only be established at a digital speakerphone.
When programming conference calls, perform the following steps.
• Program the maximum CO lines you want to allow in a conference (none, 2 or 3).
• Program the time allowed for unsupervised conferences (CO Line-to-CO Line).
• Turn the conference tone on (Yes) or off (No).
Other features whose programming affects conference calling includes:
• CO Line Loop Supervision
• CO Line – Call Abandon