Conference Calls - Panasonic DBS 576 Technical Manual

Section 700 - Operation

Conference Calls

Description
Conference Calls allow you to add another party to an existing conversation. With the standard
system configuration, up to 4 parties can be included in a conference call at any one time. If the
optional Conference Card is installed, additional parties up to a total of 8 can participate in a
conference call.
Any combination of extensions and CO lines can be in the conference as long as the original
extension is in the conference and the total number of parties does not exceed 8. Only one operation is
used to establish and add to a conference. You simply have to place the current call on hold, dial the
next party and press the CONF key. No different operation or access code is required to add
additional parties to the call.
When no optional conference card is installed, the system supports the following types of four-party

conference calls:

• 4 extensions
• 3 extensions and 1 CO line
• 2 extension and 2 CO lines
• 1 extension and 3 CO lines
Operation
See Section 750 - Key Phone User Guide for operating instructions.
Hardware Requirements
• A Conference Card (VB-44120) must be installed in the System in order to conference more than
three parties.
Related Programming
• FF1-0-03: Extension COS (8-Party Conference)
• FF1-0-03: Extension COS (Unsupervised Conference Call)
• FF1-0-01: Splash Tone (3-party conference)
• FF1-1-04: Conference Hold Call Recall Timer
• FF3: Extension COS
Considerations
• **If all the internal parties hang up, the conference call will be disconnected. If the internal party
remains in the conversation, the conference call remains in progress.
• When three or four parties are conferenced, a built-in 4-party conference circuit is used. If no
4-party conference circuit is available, a conference cannot be established.
• When a fifth party is added, the conference is moved to a conference circuit on the 8-party
conference card. If an 8-party conference circuit is not available, a fifth party cannot be added to
a conference.
• Once an 8-party conference circuit is used, it continues to be used as long as the conference
continues.
• An 8-party conference card supports up to four 8-party conference circuits. However, the card
must be placed in cabinet slots 1, 5, or 9 to support more than one 8-party conference circuit (and
jumpered accordingly).
576-51-700 DBS 576 (USA) issued April 2002
Chapter 5. Key Telephone Features
5-35