Panasonic KX-TD500 System Reference Manual page 643

E. Conversation Features
1.00 Conference
Description
Allows an extension user to add a third-party to a
two-party conversation and make a three-party
conference.
An extension user can have the following
combination of calls on the line:
• three extensions
• one extension and two outside parties
• two extensions and one outside party
On the TSW card, there are eight standard
conference trunks provided for this purpose.
By equipping the optional conference expansion
card (KX-TD50104), on the TSW card the
number of conference trunks increases to 64.
To utilize optional conference expansion card,
assign "Configuration-System Assignment", TSW
Additional CONF to "Yes".
When two members in the conference are both
outside parties, two conference trunks are
necessary. In all other cases, one conference
trunk is enough.
The KX-TD500 system has 2 types of SLT
conference operation mode.
The operation mode is determined by the dumb
system programming command "World Select 3
(WS3)".
The following table shows a summary of
conference operation for each mode in case of
the third party is a CO line or an extension.
with CO line
Flash +
Mode 1
(Default) Feature Number for
selecting a CO line +
Flash
Mode 2 Flash +
Feature Number for
"Conference" +
Feature Number for
selecting a CO line +
Destination Number +
Flash
Mode 3 Disable
with Extension
Flash +
Extension Directory
Number +
Flash
Flash +
Feature Number for
"Conference" +
Extension Directory
Number +
Flash
Disable
5-E-1
Programming
System Programming
"Configuration-System Assignment",
TSW Additional CONF
"World Select 3 (WS3)",
SLT Transfer Operation
Conditions
These operation modes influence the SLT
transfer operation. Refer to Section 5-D-1.00
"Call Transfer".
Pressing the switchhook by the conference
originator during the conference restores a
conversation with the first party.
This places the second party on Consultation
Hold.
Pressing the switchhook again establishes the
conference again if the conference trunk is
available. If the conference trunk is not
available, conversation with the held (second)
party starts,
placing the first party on Consultation Hold.
When you assign the optional Conf Card on the
TSW card, eight standard conference trunks will
be disabled.
Reference
VT Dumb
10-C-1.00 11-C-1.00
— 11-C-45.00