Panasonic KX-TD500 System Reference Manual page 517

G. Conversation Features
1.00 Programmable Privacy
Description
The extension user can intrude on a busy line by
pressing the red lit PDN, SCO or the red flashing
SDN button, if the system is set to non-privacy.
In default mode, the system is set to privacy.
This means that a third party cannot intrude on a
busy line.
It is administrable to make system privacy or non-
privacy by "System-Operation", Privacy on DN
Key.
Programming
System Programming
"System-Operation (1/3)",
Privacy on DN Key
Conditions
The table shows the other party to be barged in
by pressing the red lit PDN, SCO or the red
flashing SDN buttons in the non-privacy system.
Button pressed A call to be barged in
PDN A call on the SDN button owned
by this PDN.
A call on PDN button which is
SDN
owner (including SLT) of this
SDN.
A call on the pressed Single CO
SCO
button.
Privacy and non-privacy can be temporarily
changed.
For further details, refer to Section 4-G-2.00
"Privacy Release" and Section 4-G-3.00 "Privacy
Attach".
In privacy and non-privacy system, pressing a
button which is lit in red results in the following:
1. In privacy system:
Pressing PDN or SDN Pressing SCO or GCO
Ignored Cause Automatic Callback-
Trunk
Reference
VT Dumb
10-D-1.01 11-C-4.00
4-G-1
2. In non-privacy system:
Pressing PDN Pressing SCO
or SDN
Allows a three
Allows a three
party conver-
party conversation
sation
(reorder tone
(ignored if
sounds if confer-
conference
ence trunk is
trunk is
unavailable)
unavailable)
When you are making outside calls with PDN
button, another party cannot barge in your call
by pressing SCO button. (It will cause
Automatic Callback-Trunk.)
Operation
Intruding on a busy line in non-privacy system
The following example shows the procedure to be
used by extension B whose SDN is owned by the
PDN of extension A, who is talking with party C
on the PDN button.
Extension A Extension C
PDN PDN
Extension B
SDN
The indicator on the SDN button of extension B is
flashing in red 120 wink.
1. Press the SDN button (on
extension B) flashing in red 120
wink.
Extension A Extension C
PDN PDN
Extension B
SDN
Pressing GCO
Cause Automatic
Callback-Trunk
• Extension A is talking
with Extension C.
• Extension B has the
SDN button owned by
extension A's PDN.
• A three party
conversation is
established among
the extensions A, B
and C.