Panasonic KX-TD500 System Reference Manual page 526

Operation
Establishing an Unattended Conference-One
Appearance
During a conference with two outside parties on
one DN button
1. Press the CONF button.
• The indicator on the DN button
flashes in green 120 wink.
• You leave the conference.
CO-to-CO call between the
other two parties is
established.
• The indicator light on the
CONF button goes out.
Returning to a conference
1. Press the green DN button that is
flashing in 120 wink.
• You join the conference again.
• The indicator on the DN button
lights in green.
• The indicator on the CONF
button lights in red.
Answering Unattended Conference Recall
If on-hook, Unattended Conference Recall starts.
If off-hook, call waiting tone sounds.
1. Press the green DN button that is
flashing in 120 wink.
• You return to the conference.
• The indicator on the DN button
(Supplement)
If no conference trunks are available at the time,
returning to the conference and answering
Unattended Conference Recall results in
conversation with the first party, placing the other
party on Consultation Hold.
Pressing the TRANSFER button offers alternate
conversation with the two parties.
Pressing the CONF button again restores the
Unattended Conference.
4-G-10
lights in green.